Merge branch 'master' into core-updates

81 files changed, 15644 insertions, 12218 deletions

diff --git a/gnu/bootloader.scm b/gnu/bootloader.scm
index a381f67145..01bdd4acaa 100644
--- a/gnu/bootloader.scm
+++ b/gnu/bootloader.scm
@@ -2,6 +2,7 @@
 ;;; Copyright © 2017 David Craven <david@craven.ch>
 ;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;; Copyright © 2017 Leo Famulari <leo@famulari.name>
+;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -23,6 +24,7 @@
   #:use-module (guix records)
   #:use-module (guix ui)
   #:use-module (srfi srfi-1)
+  #:use-module (ice-9 match)
   #:export (menu-entry
             menu-entry?
             menu-entry-label
@@ -32,6 +34,9 @@
             menu-entry-initrd
             menu-entry-device-mount-point
 
+            menu-entry->sexp
+            sexp->menu-entry
+
             bootloader
             bootloader?
             bootloader-name
@@ -76,6 +81,35 @@
                    (default '()))          ; list of string-valued gexps
   (initrd          menu-entry-initrd))     ; file name of the initrd as a gexp
 
+(define (menu-entry->sexp entry)
+  "Return ENTRY serialized as an sexp."
+  (match entry
+    (($ <menu-entry> label device mount-point linux linux-arguments initrd)
+     `(menu-entry (version 0)
+                  (label ,label)
+                  (device ,device)
+                  (device-mount-point ,mount-point)
+                  (linux ,linux)
+                  (linux-arguments ,linux-arguments)
+                  (initrd ,initrd)))))
+
+(define (sexp->menu-entry sexp)
+  "Turn SEXP, an sexp as returned by 'menu-entry->sexp', into a <menu-entry>
+record."
+  (match sexp
+    (('menu-entry ('version 0)
+                  ('label label) ('device device)
+                  ('device-mount-point mount-point)
+                  ('linux linux) ('linux-arguments linux-arguments)
+                  ('initrd initrd) _ ...)
+     (menu-entry
+      (label label)
+      (device device)
+      (device-mount-point mount-point)
+      (linux linux)
+      (linux-arguments linux-arguments)
+      (initrd initrd)))))
+
 
 ;;;
 ;;; Bootloader record.
@@ -108,7 +142,7 @@
   (bootloader         bootloader-configuration-bootloader) ;<bootloader>
   (target             bootloader-configuration-target      ;string
                       (default #f))
-  (menu-entries       bootloader-configuration-menu-entries ;list of <boot-parameters>
+  (menu-entries       bootloader-configuration-menu-entries ;list of <menu-entry>
                       (default '()))
   (default-entry      bootloader-configuration-default-entry ;integer
                       (default 0))
diff --git a/gnu/local.mk b/gnu/local.mk
index b40472709f..7f288b3e7c 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1362,7 +1362,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/totem-meson-compat.patch			\
   %D%/packages/patches/totem-meson-easy-codec.patch		\
   %D%/packages/patches/tuxpaint-stamps-path.patch		\
-  %D%/packages/patches/twinkle-include-qregexpvalidator.patch	\
   %D%/packages/patches/txr-shell.patch				\
   %D%/packages/patches/u-boot-fix-mkimage-header-verification.patch	\
   %D%/packages/patches/unzip-CVE-2014-8139.patch		\
@@ -1420,7 +1419,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/xf86-video-tga-remove-mibstore.patch	\
   %D%/packages/patches/xf86-video-voodoo-pcitag.patch		\
   %D%/packages/patches/xfce4-panel-plugins.patch		\
-  %D%/packages/patches/xfce4-session-fix-xflock4.patch		\
   %D%/packages/patches/xfce4-settings-defaults.patch		\
   %D%/packages/patches/xinetd-fix-fd-leak.patch			\
   %D%/packages/patches/xinetd-CVE-2013-4342.patch		\
diff --git a/gnu/packages/admin.scm b/gnu/packages/admin.scm
index eb298dca3b..3e75b73dcb 100644
--- a/gnu/packages/admin.scm
+++ b/gnu/packages/admin.scm
@@ -1500,7 +1500,7 @@ module slots, and the list of I/O ports (e.g. serial, parallel, USB).")
 (define-public acpica
   (package
     (name "acpica")
-    (version "20190703")
+    (version "20190816")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -1508,7 +1508,7 @@ module slots, and the list of I/O ports (e.g. serial, parallel, USB).")
                     version ".tar.gz"))
               (sha256
                (base32
-                "0kp3ian3lffx9709ajrr3bp6b9cb6c6v1crjziyr8j8pp639jlwz"))))
+                "0lipy3jwl498lvgwzj6xcvmg61myl7hhilpallh1cf3ppgrq13l8"))))
     (build-system gnu-build-system)
     (native-inputs `(("flex" ,flex)
                      ("bison" ,bison)))
diff --git a/gnu/packages/agda.scm b/gnu/packages/agda.scm
index c085bfac2e..931f1e8ef7 100644
--- a/gnu/packages/agda.scm
+++ b/gnu/packages/agda.scm
@@ -22,9 +22,9 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (gnu packages agda)
-  #:use-module (gnu packages haskell)
   #:use-module (gnu packages haskell-check)
   #:use-module (gnu packages haskell-web)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (guix build-system emacs)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system haskell)
diff --git a/gnu/packages/audio.scm b/gnu/packages/audio.scm
index 341281c943..2bd07cb01d 100644
--- a/gnu/packages/audio.scm
+++ b/gnu/packages/audio.scm
@@ -3693,7 +3693,7 @@ library.")
 (define-public faudio
   (package
     (name "faudio")
-    (version "19.08")
+    (version "19.09")
     (source
      (origin
        (method git-fetch)
@@ -3702,7 +3702,7 @@ library.")
              (commit version)))
        (file-name (string-append name "-" version "-checkout"))
        (sha256
-        (base32 "1v13kfhyr46241vb6a4dcb4gw5f149525sprwa9cj4rv6wlcqgm5"))))
+        (base32 "0fagik55jmy3qmb27nhg0zxash1ahfkxphx8m8gs0pimqqrdrd9d"))))
     (arguments
      '(#:tests? #f                      ; No tests.
        #:configure-flags '("-DFFMPEG=ON")))
diff --git a/gnu/packages/aux-files/chromium/master-preferences.json b/gnu/packages/aux-files/chromium/master-preferences.json
index 5a2049fa72..df68804d5a 100644
--- a/gnu/packages/aux-files/chromium/master-preferences.json
+++ b/gnu/packages/aux-files/chromium/master-preferences.json
@@ -17,9 +17,6 @@
     "alternate_error_pages": {
         "enabled": false
     },
-    "hardware": {
-        "audio_capture_enabled": false
-    },
     "default_apps": "noinstall",
     "hide_web_store_icon": true,
     "homepage": "https://www.gnu.org/software/guix/"
diff --git a/gnu/packages/aux-files/linux-libre/5.2-arm64.conf b/gnu/packages/aux-files/linux-libre/5.2-arm64.conf
index bfd8c18ddb..4ad652a78f 100644
--- a/gnu/packages/aux-files/linux-libre/5.2-arm64.conf
+++ b/gnu/packages/aux-files/linux-libre/5.2-arm64.conf
@@ -8023,7 +8023,7 @@ CONFIG_VALIDATE_FS_PARSER=y
 CONFIG_FS_IOMAP=y
 # CONFIG_EXT2_FS is not set
 # CONFIG_EXT3_FS is not set
-CONFIG_EXT4_FS=m
+CONFIG_EXT4_FS=y
 CONFIG_EXT4_USE_FOR_EXT2=y
 CONFIG_EXT4_FS_POSIX_ACL=y
 CONFIG_EXT4_FS_SECURITY=y
diff --git a/gnu/packages/base.scm b/gnu/packages/base.scm
index 791647d848..ebaa93f092 100644
--- a/gnu/packages/base.scm
+++ b/gnu/packages/base.scm
@@ -1112,8 +1112,8 @@ to the @code{share/locale} sub-directory of this package.")
                                ;; tests---e.g., in Guile's i18n tests.
                                '("de_DE" "el_GR" "en_US" "fr_FR" "tr_TR"))
                      #t))))
-    (inputs `(("glibc" ,glibc)
-              ("gzip" ,gzip)))
+    (native-inputs `(("glibc" ,glibc)
+                     ("gzip" ,gzip)))
     (synopsis "Small sample of UTF-8 locales")
     (description
      "This package provides a small sample of UTF-8 locales mostly useful in
diff --git a/gnu/packages/bioconductor.scm b/gnu/packages/bioconductor.scm
index ea43bf2fdf..37cd51d16c 100644
--- a/gnu/packages/bioconductor.scm
+++ b/gnu/packages/bioconductor.scm
@@ -31,7 +31,7 @@
   #:use-module (gnu packages compression)
   #:use-module (gnu packages gcc)
   #:use-module (gnu packages graph)
-  #:use-module (gnu packages haskell)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages image)
   #:use-module (gnu packages maths)
   #:use-module (gnu packages netpbm)
@@ -532,6 +532,28 @@ annotations for the genome of the model mouse Mus musculus.")
 by UCSC (hg19, February 2009) and stored in Biostrings objects.")
     (license license:artistic2.0)))
 
+(define-public r-ensdb-hsapiens-v75
+  (package
+    (name "r-ensdb-hsapiens-v75")
+    (version "2.99.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (bioconductor-uri "EnsDb.Hsapiens.v75" version 'annotation))
+       (sha256
+        (base32
+         "0jx6rf6v0j8yr07q3c1h7s121901dc400nm6xaiv4i7kb5czjn9c"))))
+    (properties
+     `((upstream-name . "EnsDb.Hsapiens.v75")))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-ensembldb" ,r-ensembldb)))
+    (home-page "https://bioconductor.org/packages/EnsDb.Hsapiens.v75")
+    (synopsis "Ensembl based annotation package")
+    (description
+     "This package exposes an annotation database generated from Ensembl.")
+    (license license:artistic2.0)))
+
 (define-public r-genelendatabase
   (package
     (name "r-genelendatabase")
@@ -686,6 +708,31 @@ the TxDb object of Mouse data as provided by UCSC (mm10, December 2011)
 based on the knownGene track.")
     (license license:artistic2.0)))
 
+(define-public r-txdb-celegans-ucsc-ce6-ensgene
+  (package
+    (name "r-txdb-celegans-ucsc-ce6-ensgene")
+    (version "3.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (bioconductor-uri "TxDb.Celegans.UCSC.ce6.ensGene"
+                              version 'annotation))
+       (sha256
+        (base32
+         "1sgppva33cdy4isj2is8mfalj5gmmkpbkq9w1d83a4agcq31mi90"))))
+    (properties
+     `((upstream-name . "TxDb.Celegans.UCSC.ce6.ensGene")))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-annotationdbi" ,r-annotationdbi)
+       ("r-genomicfeatures" ,r-genomicfeatures)))
+    (home-page "https://bioconductor.org/packages/TxDb.Celegans.UCSC.ce6.ensGene/")
+    (synopsis "Annotation package for C elegans TxDb objects")
+    (description
+     "This package exposes a C elegans annotation database generated from UCSC
+by exposing these as TxDb objects.")
+    (license license:artistic2.0)))
+
 (define-public r-fdb-infiniummethylation-hg19
   (package
     (name "r-fdb-infiniummethylation-hg19")
@@ -2977,14 +3024,14 @@ phenotype of interest.")
 (define-public r-fgsea
   (package
     (name "r-fgsea")
-    (version "1.10.0")
+    (version "1.10.1")
     (source
      (origin
        (method url-fetch)
        (uri (bioconductor-uri "fgsea" version))
        (sha256
         (base32
-         "07mvv1i690q80fm8sxgdqxchamn76409vn91ppgcck2xpi6b8q6c"))))
+         "1k2f9hkp1mvc9fpqzhbf08jd0yg4xaa312v9vy37fxd9pyrwp5a6"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-bh" ,r-bh)
@@ -5000,14 +5047,14 @@ self-organizing map clustering and minimal spanning trees.")
 (define-public r-mixomics
   (package
     (name "r-mixomics")
-    (version "6.8.0")
+    (version "6.8.2")
     (source
      (origin
        (method url-fetch)
        (uri (bioconductor-uri "mixOmics" version))
        (sha256
         (base32
-         "1f08jx35amn3sfcmqb96mjxxsm6dnpzhff625z758x1992wj4zsk"))))
+         "0issfrhsgc102sr33q9v6w6jrrd32plig7szd1nm0n4r3yn4y2fc"))))
     (properties `((upstream-name . "mixOmics")))
     (build-system r-build-system)
     (propagated-inputs
@@ -5230,3 +5277,192 @@ cis-regulatory topics (cisTopics) from single cell epigenomics data, and
 includes functionalities to identify cell states based on the contribution of
 cisTopics and explore the nature and regulatory proteins driving them.")
       (license license:gpl3))))
+
+(define-public r-genie3
+  (package
+    (name "r-genie3")
+    (version "1.6.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (bioconductor-uri "GENIE3" version))
+       (sha256
+        (base32
+         "0lvrpw4xn7xyinmn13f65i0vkzfzwdj5y8gsa8vyy8kcn83d28fx"))))
+    (properties `((upstream-name . "GENIE3")))
+    (build-system r-build-system)
+    (propagated-inputs `(("r-reshape2" ,r-reshape2)))
+    (home-page "https://bioconductor.org/packages/GENIE3")
+    (synopsis "Gene network inference with ensemble of trees")
+    (description
+     "This package implements the GENIE3 algorithm for inferring gene
+regulatory networks from expression data.")
+    (license license:gpl2+)))
+
+(define-public r-roc
+  (package
+    (name "r-roc")
+    (version "1.60.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (bioconductor-uri "ROC" version))
+       (sha256
+        (base32
+         "1sapnl8kyaldgvdc657wqcmyjb24nvrnaw7v94bbs8yf5pmfm71c"))))
+    (properties `((upstream-name . "ROC")))
+    (build-system r-build-system)
+    (home-page "https://www.bioconductor.org/packages/ROC/")
+    (synopsis "Utilities for ROC curves")
+    (description
+     "This package provides utilities for @dfn{Receiver Operating
+Characteristic} (ROC) curves, with a focus on micro arrays.")
+    (license license:artistic2.0)))
+
+(define-public r-illuminahumanmethylation450kanno-ilmn12-hg19
+  (package
+    (name "r-illuminahumanmethylation450kanno-ilmn12-hg19")
+    (version "0.6.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (bioconductor-uri
+             "IlluminaHumanMethylation450kanno.ilmn12.hg19"
+             version 'annotation))
+       (sha256
+        (base32
+         "059vlxsx3p3fcnywwirahsc6mlk813zpqnbv0jsrag6x5bb8z6r4"))))
+    (properties
+     `((upstream-name
+        . "IlluminaHumanMethylation450kanno.ilmn12.hg19")))
+    (build-system r-build-system)
+    (propagated-inputs `(("r-minfi" ,r-minfi)))
+    (home-page
+     "https://bioconductor.org/packages/IlluminaHumanMethylation450kanno.ilmn12.hg19/")
+    (synopsis "Annotation for Illumina's 450k methylation arrays")
+    (description
+     "This package provides manifests and annotation for Illumina's 450k array
+data.")
+    (license license:artistic2.0)))
+
+(define-public r-watermelon
+  (package
+    (name "r-watermelon")
+    (version "1.28.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (bioconductor-uri "wateRmelon" version))
+       (sha256
+        (base32
+         "0354ahmfvhqw3yfp17rmz35vlgjp262n4q3hr8qyccyrnk2dz17z"))))
+    (properties `((upstream-name . "wateRmelon")))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-biobase" ,r-biobase)
+       ("r-illuminahumanmethylation450kanno-ilmn12-hg19"
+        ,r-illuminahumanmethylation450kanno-ilmn12-hg19)
+       ("r-illuminaio" ,r-illuminaio)
+       ("r-limma" ,r-limma)
+       ("r-lumi" ,r-lumi)
+       ("r-matrixstats" ,r-matrixstats)
+       ("r-methylumi" ,r-methylumi)
+       ("r-roc" ,r-roc)))
+    (home-page "https://bioconductor.org/packages/wateRmelon/")
+    (synopsis "Illumina 450 methylation array normalization and metrics")
+    (description
+     "The standard index of DNA methylation (beta) is computed from methylated
+and unmethylated signal intensities.  Betas calculated from raw signal
+intensities perform well, but using 11 methylomic datasets we demonstrate that
+quantile normalization methods produce marked improvement.  The commonly used
+procedure of normalizing betas is inferior to the separate normalization of M
+and U, and it is also advantageous to normalize Type I and Type II assays
+separately.  This package provides 15 flavours of betas and three performance
+metrics, with methods for objects produced by the @code{methylumi} and
+@code{minfi} packages.")
+    (license license:gpl3)))
+
+(define-public r-gdsfmt
+  (package
+    (name "r-gdsfmt")
+    (version "1.20.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (bioconductor-uri "gdsfmt" version))
+       (sha256
+        (base32
+         "0h3hgwxq26dg09fyxqg545v9dg1dizsj58cf05rncr3jj4f8g0xy"))
+       (modules '((guix build utils)))
+       ;; Remove bundled sources of zlib, lz4, and xz.  Don't attempt to build
+       ;; them and link with system libraries instead.
+       (snippet
+        '(begin
+           (for-each delete-file-recursively
+                     '("src/LZ4"
+                       "src/XZ"
+                       "src/ZLIB"))
+           (substitute* "src/Makevars"
+             (("all: \\$\\(SHLIB\\)") "all:")
+             (("\\$\\(SHLIB\\): liblzma.a") "")
+             (("(ZLIB|LZ4)/.*") "")
+             (("CoreArray/dVLIntGDS.cpp.*")
+              "CoreArray/dVLIntGDS.cpp")
+             (("CoreArray/dVLIntGDS.o.*")
+              "CoreArray/dVLIntGDS.o")
+             (("PKG_LIBS = ./liblzma.a")
+              "PKG_LIBS = -llz4"))
+           (substitute* "src/CoreArray/dStream.h"
+             (("include \"../(ZLIB|LZ4|XZ/api)/(.*)\"" _ _ header)
+              (string-append "include <" header ">")))
+           #t))))
+    (properties `((upstream-name . "gdsfmt")))
+    (build-system r-build-system)
+    (inputs
+     `(("lz4" ,lz4)
+       ("xz" ,xz)
+       ("zlib" ,zlib)))
+    (home-page "http://corearray.sourceforge.net/")
+    (synopsis
+     "R Interface to CoreArray Genomic Data Structure (GDS) Files")
+    (description
+     "This package provides a high-level R interface to CoreArray @dfn{Genomic
+Data Structure} (GDS) data files, which are portable across platforms with
+hierarchical structure to store multiple scalable array-oriented data sets
+with metadata information.  It is suited for large-scale datasets, especially
+for data which are much larger than the available random-access memory.  The
+@code{gdsfmt} package offers efficient operations specifically designed for
+integers of less than 8 bits, since a diploid genotype, like
+@dfn{single-nucleotide polymorphism} (SNP), usually occupies fewer bits than a
+byte.  Data compression and decompression are available with relatively
+efficient random access.  It is also allowed to read a GDS file in parallel
+with multiple R processes supported by the package @code{parallel}.")
+    (license license:lgpl3)))
+
+(define-public r-bigmelon
+  (package
+    (name "r-bigmelon")
+    (version "1.10.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (bioconductor-uri "bigmelon" version))
+       (sha256
+        (base32
+         "0269kf3d34dbng3swk7pclpk02vy4k3askygmzi5my3fqyfzdkj9"))))
+    (properties `((upstream-name . "bigmelon")))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-biobase" ,r-biobase)
+       ("r-biocgenerics" ,r-biocgenerics)
+       ("r-gdsfmt" ,r-gdsfmt)
+       ("r-geoquery" ,r-geoquery)
+       ("r-methylumi" ,r-methylumi)
+       ("r-minfi" ,r-minfi)
+       ("r-watermelon" ,r-watermelon)))
+    (home-page "https://bioconductor.org/packages/bigmelon/")
+    (synopsis "Illumina methylation array analysis for large experiments")
+    (description
+     "This package provides methods for working with Illumina arrays using the
+@code{gdsfmt} package.")
+    (license license:gpl3)))
diff --git a/gnu/packages/bioinformatics.scm b/gnu/packages/bioinformatics.scm
index b2953fddbf..e158bd3af7 100644
--- a/gnu/packages/bioinformatics.scm
+++ b/gnu/packages/bioinformatics.scm
@@ -77,9 +77,9 @@
   #:use-module (gnu packages groff)
   #:use-module (gnu packages guile)
   #:use-module (gnu packages guile-xyz)
-  #:use-module (gnu packages haskell)
   #:use-module (gnu packages haskell-check)
   #:use-module (gnu packages haskell-web)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages image)
   #:use-module (gnu packages imagemagick)
   #:use-module (gnu packages java)
@@ -1758,8 +1758,8 @@ well as many of the command line options.")
          (add-after 'unpack 'keep-references-to-bwa
            (lambda* (#:key inputs #:allow-other-keys)
              (substitute* "bwameth.py"
-               (("bwa mem")
-                (string-append (which "bwa") " mem"))
+               (("bwa (mem|index)" _ command)
+                (string-append (which "bwa") " " command))
                ;; There's an ill-advised check for "samtools" on PATH.
                (("^checkX.*") ""))
              #t)))))
@@ -2344,16 +2344,16 @@ other types of unwanted sequence from high-throughput sequencing reads.")
 (define-public libbigwig
   (package
     (name "libbigwig")
-    (version "0.4.2")
+    (version "0.4.4")
     (source (origin
               (method git-fetch)
               (uri (git-reference
                     (url "https://github.com/dpryan79/libBigWig.git")
                     (commit version)))
-              (file-name (string-append name "-" version "-checkout"))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "0h2smg24v5srdcqzrmz2g23cmlp4va465mgx8r2z571sfz8pv454"))))
+                "09693dmf1scdac5pyq6qyn8b4mcipvnmc370k9a5z41z81m3dcsj"))))
     (build-system gnu-build-system)
     (arguments
      `(#:test-target "test"
@@ -7367,13 +7367,13 @@ S4Vectors package itself.")
 (define-public r-iranges
   (package
     (name "r-iranges")
-    (version "2.18.1")
+    (version "2.18.2")
     (source (origin
               (method url-fetch)
               (uri (bioconductor-uri "IRanges" version))
               (sha256
                (base32
-                "1d64sh43pfc9vj2l7y7x6sb44l67wlnn3dzygp7ws0smn06mardq"))))
+                "0dc35844c1mfj07hvy6yn4wag6qdggbgl9gjcg3wpkh9hkm60a5n"))))
     (properties
      `((upstream-name . "IRanges")))
     (build-system r-build-system)
@@ -7620,13 +7620,13 @@ on Bioconductor or which replace R functions.")
 (define-public r-annotationdbi
   (package
     (name "r-annotationdbi")
-    (version "1.46.0")
+    (version "1.46.1")
     (source (origin
               (method url-fetch)
               (uri (bioconductor-uri "AnnotationDbi" version))
               (sha256
                (base32
-                "0lfq5668a6sq4kqhxx78hl3jcaqdsaaliiybl9xyya2scdk8c29c"))))
+                "13nanz4nzy0mcda8ljz2g8d81hpqfz6jky7ydz5hpk0g2264b9ga"))))
     (properties
      `((upstream-name . "AnnotationDbi")))
     (build-system r-build-system)
@@ -7647,13 +7647,13 @@ annotation data packages using SQLite data storage.")
 (define-public r-biomart
   (package
     (name "r-biomart")
-    (version "2.40.3")
+    (version "2.40.4")
     (source (origin
               (method url-fetch)
               (uri (bioconductor-uri "biomaRt" version))
               (sha256
                (base32
-                "022m1r44s00c5k9bmv0lr22lcn662nhc91aazvv0yyysxjamyf60"))))
+                "0dj51qkxm7bh24b3bs1di7lic6zgi7g5gf9iqkqhrwkbm7sqvn0v"))))
     (properties
      `((upstream-name . "biomaRt")))
     (build-system r-build-system)
@@ -7872,13 +7872,13 @@ alignments.")
 (define-public r-rtracklayer
   (package
     (name "r-rtracklayer")
-    (version "1.44.2")
+    (version "1.44.3")
     (source (origin
               (method url-fetch)
               (uri (bioconductor-uri "rtracklayer" version))
               (sha256
                (base32
-                "03b4rfsbzjjf5kxcsjv7kq8hrsgcvz9rfzcn2v7fx3nr818pbb8s"))))
+                "091zydz1zpz519ha0jkbvzrhxjvw5r2963qz9grmvl2jd8girvcg"))))
     (build-system r-build-system)
     (arguments
      `(#:phases
@@ -9446,13 +9446,13 @@ and irregular enzymatic cleavages, mass measurement accuracy, etc.")
 (define-public r-seurat
   (package
     (name "r-seurat")
-    (version "3.0.2")
+    (version "3.1.0")
     (source (origin
               (method url-fetch)
               (uri (cran-uri "Seurat" version))
               (sha256
                (base32
-                "016fgcmjz3sjfxdvam5hd7mdxpmpnc7f6p5zqlh97m21dgn5vpqn"))))
+                "0icxndnnkkmmr9hhd01dv3w8pih7x9r0rlp3fq9pk3qajp9gmlyq"))))
     (properties `((upstream-name . "Seurat")))
     (build-system r-build-system)
     (propagated-inputs
@@ -9469,6 +9469,7 @@ and irregular enzymatic cleavages, mass measurement accuracy, etc.")
        ("r-igraph" ,r-igraph)
        ("r-irlba" ,r-irlba)
        ("r-kernsmooth" ,r-kernsmooth)
+       ("r-leiden" ,r-leiden)
        ("r-lmtest" ,r-lmtest)
        ("r-mass" ,r-mass)
        ("r-matrix" ,r-matrix)
@@ -9479,6 +9480,7 @@ and irregular enzymatic cleavages, mass measurement accuracy, etc.")
        ("r-rann" ,r-rann)
        ("r-rcolorbrewer" ,r-rcolorbrewer)
        ("r-rcpp" ,r-rcpp)
+       ("r-rcppannoy" ,r-rcppannoy)
        ("r-rcppeigen" ,r-rcppeigen)
        ("r-rcppprogress" ,r-rcppprogress)
        ("r-reticulate" ,r-reticulate)
@@ -9489,7 +9491,8 @@ and irregular enzymatic cleavages, mass measurement accuracy, etc.")
        ("r-scales" ,r-scales)
        ("r-sctransform" ,r-sctransform)
        ("r-sdmtools" ,r-sdmtools)
-       ("r-tsne" ,r-tsne)))
+       ("r-tsne" ,r-tsne)
+       ("r-uwot" ,r-uwot)))
     (home-page "http://www.satijalab.org/seurat")
     (synopsis "Seurat is an R toolkit for single cell genomics")
     (description
@@ -10176,22 +10179,24 @@ by Ernst and Kellis.")
 (define-public r-ldblock
   (package
     (name "r-ldblock")
-    (version "1.14.0")
+    (version "1.14.2")
     (source
      (origin
        (method url-fetch)
        (uri (bioconductor-uri "ldblock" version))
        (sha256
         (base32
-         "0lraxhq9ny3468534klrl64nx0dpaf9cbd5bir6m5qma8j7kfnyd"))))
+         "0xx04cghx6ads1ackwnw3z0gf72qv461nznzmcnkgmp7w5n9m2af"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-biocgenerics" ,r-biocgenerics)
-       ("r-erma" ,r-erma)
+       ("r-ensdb-hsapiens-v75" ,r-ensdb-hsapiens-v75)
+       ("r-ensembldb" ,r-ensembldb)
        ("r-genomeinfodb" ,r-genomeinfodb)
        ("r-genomicfiles" ,r-genomicfiles)
        ("r-go-db" ,r-go-db)
        ("r-homo-sapiens" ,r-homo-sapiens)
+       ("r-httr" ,r-httr)
        ("r-matrix" ,r-matrix)
        ("r-rsamtools" ,r-rsamtools)
        ("r-snpstats" ,r-snpstats)
@@ -13412,8 +13417,7 @@ bgzipped text file that contains a pair of genomic coordinates per line.")
          "0y5zyjksj1rdglj601xd2bbni5abhdh622y3ck76chyzxz9z4rx8"))))
     (build-system python-build-system)
     (propagated-inputs
-     `(("python-setuptools" ,python-setuptools)
-       ("python-six" ,python-six)))
+     `(("python-six" ,python-six)))
     (home-page "http://mattshirley.com")
     (synopsis "Random access to fasta subsequences")
     (description
@@ -14653,16 +14657,14 @@ proximity within a reference genome.")
          "08y3vz1vcx09whmbsn722lcs6jl9wyrh9i4p3k8j4cb1i32bij4a"))))
     (build-system python-build-system)
     (inputs
-     `(("python-setuptools" ,python-setuptools)
-       ("python-pandas" ,python-pandas)
+     `(("python-pandas" ,python-pandas)
        ("python-future" ,python-future)
        ("python-scipy" ,python-scipy)
        ("python-matplotlib" ,python-matplotlib)
        ("python-regex" ,python-regex)
        ("python-pysam" ,python-pysam)))
     (native-inputs
-     `(("python-setuptools" ,python-setuptools)
-       ("python-cython" ,python-cython)))
+     `(("python-cython" ,python-cython)))
     (home-page "https://github.com/CGATOxford/UMI-tools")
     (synopsis "Tools for analyzing unique modular identifiers")
     (description "This package provides tools for dealing with @dfn{Unique
@@ -15215,3 +15217,37 @@ indels (insertions and deletions), MNPs (multi-nucleotide polymorphisms), and
 complex events (composite insertion and substitution events) smaller than the
 length of a short-read sequencing alignment.")
       (license license:expat))))
+
+(define-public samblaster
+  (package
+    (name "samblaster")
+    (version "0.1.24")
+    (source (origin
+      (method git-fetch)
+      (uri (git-reference
+            (url "https://github.com/GregoryFaust/samblaster.git")
+            (commit (string-append "v." version))))
+      (file-name (git-file-name name version))
+      (sha256
+       (base32
+        "0iv2ddfw8363vb2x8gr3p8g88whb6mb9m0pf71i2cqsbv6jghap7"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:tests? #f ; there are none
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure) ; There is no configure phase.
+         (replace 'install
+           (lambda* (#:key outputs #:allow-other-keys)
+             (install-file "samblaster"
+                           (string-append (assoc-ref outputs "out") "/bin"))
+             #t)))))
+    (home-page "https://github.com/GregoryFaust/samblaster")
+    (synopsis "Mark duplicates in paired-end SAM files")
+    (description "Samblaster is a fast and flexible program for marking
+duplicates in read-id grouped paired-end SAM files.  It can also optionally
+output discordant read pairs and/or split read mappings to separate SAM files,
+and/or unmapped/clipped reads to a separate FASTQ file. When marking
+duplicates, samblaster will require approximately 20MB of memory per 1M read
+pairs.")
+    (license license:expat)))
diff --git a/gnu/packages/bootloaders.scm b/gnu/packages/bootloaders.scm
index 41a2de9706..b235e1bc78 100644
--- a/gnu/packages/bootloaders.scm
+++ b/gnu/packages/bootloaders.scm
@@ -99,7 +99,7 @@
        (list "PYTHON=true")
        #:phases (modify-phases %standard-phases
                   (add-after 'unpack 'patch-stuff
-                   (lambda* (#:key inputs #:allow-other-keys)
+                   (lambda* (#:key native-inputs inputs #:allow-other-keys)
                      (substitute* "grub-core/Makefile.in"
                        (("/bin/sh") (which "sh")))
 
@@ -114,7 +114,9 @@
                                        "/sbin/mdadm\"")))
 
                      ;; Make the font visible.
-                     (copy-file (assoc-ref inputs "unifont") "unifont.bdf.gz")
+                     (copy-file (assoc-ref (or native-inputs inputs)
+                                           "unifont")
+                                "unifont.bdf.gz")
                      (system* "gunzip" "unifont.bdf.gz")
 
                      ;; Give the absolute file name of 'ckbcomp'.
diff --git a/gnu/packages/cdrom.scm b/gnu/packages/cdrom.scm
index 8d9778176f..1f2c694246 100644
--- a/gnu/packages/cdrom.scm
+++ b/gnu/packages/cdrom.scm
@@ -884,7 +884,7 @@ CD data, and more.  It's mostly compatible with @code{cdrtools}.")
 (define-public libmirage
   (package
     (name "libmirage")
-    (version "3.2.2")
+    (version "3.2.3")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -892,7 +892,7 @@ CD data, and more.  It's mostly compatible with @code{cdrtools}.")
                     version ".tar.bz2"))
               (sha256
                (base32
-                "0gwrfia0fyhi0b3p2pfyyvrcfcb0qysfzgpdqsqjqbx4xaqx5wpi"))))
+                "08mfvqyk3833ksfd47i4j3ppmrw5ry219km6h7lywdh9hm9x14yf"))))
     (build-system cmake-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
@@ -913,7 +913,7 @@ the data stored in various image formats.")
 (define-public cdemu-daemon
   (package
     (name "cdemu-daemon")
-    (version "3.2.2")
+    (version "3.2.3")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -921,7 +921,7 @@ the data stored in various image formats.")
                     version ".tar.bz2"))
               (sha256
                (base32
-                "0himyrhhfjsr4ff5aci7240bpm9x34h20pid412ci8fm16nk929b"))))
+                "022xzgwmncswb9md71w3ly3mjkdfc93lbij2llp2jamq8grxjjxr"))))
     (build-system cmake-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
@@ -942,7 +942,7 @@ drive and disc (including CD-ROMs and DVD-ROMs).")
 (define-public cdemu-client
   (package
     (name "cdemu-client")
-    (version "3.2.1")
+    (version "3.2.3")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -950,7 +950,7 @@ drive and disc (including CD-ROMs and DVD-ROMs).")
                     version ".tar.bz2"))
               (sha256
                (base32
-                "1d8m24qvv62xcwafw5zs4yf39vs64kxl4idqcngd8yyjhrb2ykg5"))))
+                "1bvc2m63fx03rbp3ihgl2n7k24lwg5ydwkmr84gsjfcxp46q10zq"))))
     (build-system cmake-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
diff --git a/gnu/packages/cedille.scm b/gnu/packages/cedille.scm
index 36fa3ae17e..caa3d864f8 100644
--- a/gnu/packages/cedille.scm
+++ b/gnu/packages/cedille.scm
@@ -21,6 +21,7 @@
   #:use-module (gnu packages agda)
   #:use-module (gnu packages emacs-xyz)
   #:use-module (gnu packages haskell)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (guix build-system emacs)
   #:use-module (guix git-download)
   #:use-module ((guix licenses) #:prefix license:)
diff --git a/gnu/packages/commencement.scm b/gnu/packages/commencement.scm
index 79f2e49008..63f1dcf015 100644
--- a/gnu/packages/commencement.scm
+++ b/gnu/packages/commencement.scm
@@ -2361,11 +2361,12 @@ exec ~a/bin/~a-~a -B~a/lib -Wl,-dynamic-linker -Wl,~a/~a \"$@\"~%"
   ;; function.)
   (package
     (inherit glibc-utf8-locales)
-    (inputs `(("glibc" ,glibc-final)
-              ("gzip"
-               ,(package-with-explicit-inputs gzip %boot4-inputs
-                                              (current-source-location)
-                                              #:guile %bootstrap-guile))))))
+    (native-inputs
+     `(("glibc" ,glibc-final)
+       ("gzip"
+        ,(package-with-explicit-inputs gzip %boot4-inputs
+                                       (current-source-location)
+                                       #:guile %bootstrap-guile))))))
 
 (define-public ld-wrapper
   ;; The final 'ld' wrapper, which uses the final Guile and Binutils.
diff --git a/gnu/packages/conky.scm b/gnu/packages/conky.scm
index 2b32bf8791..681feb6e43 100644
--- a/gnu/packages/conky.scm
+++ b/gnu/packages/conky.scm
@@ -37,7 +37,7 @@
   (package
     (name "conky")
     (home-page "https://github.com/brndnmtthws/conky")
-    (version "1.11.3")
+    (version "1.11.5")
     (source
      (origin
        (method git-fetch)
@@ -46,10 +46,10 @@
              (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "0pdl31xvmy8niagzqx9sd2b6hc6lzwfiaz66m4djf1gz9bksc8qv"))))
+        (base32 "1a75ss48mn9pknrxy33dh5rdgm67a5kpddsyqfhlcn1761kfzzyp"))))
     (build-system cmake-build-system)
     (arguments
-     `(#:tests? #f ; there are no tests
+     `(#:tests? #f                      ; there are no tests
        #:configure-flags
        (list "-DRELEASE=true")
        #:phases
diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index 458b141f91..5bf37e3900 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -53,7 +53,7 @@
   #:use-module (gnu packages gnome)
   #:use-module (gnu packages graph)
   #:use-module (gnu packages gtk)
-  #:use-module (gnu packages haskell)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages icu4c)
   #:use-module (gnu packages image)
   #:use-module (gnu packages imagemagick)
@@ -166,14 +166,14 @@ objects.")
 (define-public r-sys
   (package
     (name "r-sys")
-    (version "3.2")
+    (version "3.3")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "sys" version))
        (sha256
         (base32
-         "1k5vk5q9wa5sin0n226i05nymg469s24f6lx64yyhb7yc624j698"))))
+         "14wvy46i2iz9jn7lj3cvifmps932s3395wq681hniva0f8m7q8d6"))))
     (build-system r-build-system)
     (home-page "https://github.com/jeroen/sys")
     (synopsis "Powerful and reliable tools for running system commands in R")
@@ -212,14 +212,14 @@ read a protected key.")
 (define-public r-vegan
   (package
     (name "r-vegan")
-    (version "2.5-5")
+    (version "2.5-6")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "vegan" version))
        (sha256
         (base32
-         "0wb90ng02gi13854bjq0b8a2vrknyhb0s0l1v3z38c4zy9k54sw7"))))
+         "0g60rgn1i7wqf9pf5m1yki1m45gcp7i5hmjic0ci0f6vng70mh5k"))))
     (build-system r-build-system)
     (native-inputs
      `(("gfortran" ,gfortran)))
@@ -872,14 +872,14 @@ well as file saving is available.")
 (define-public r-d3r
   (package
     (name "r-d3r")
-    (version "0.8.6")
+    (version "0.8.7")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "d3r" version))
        (sha256
         (base32
-         "0vcmiyhd000xyl28k6rm7ba50x5sz5b2cpllxnq36q13qhdnqw6k"))))
+         "0xl3im76lp7pd5lhp8jfyqdm4j4zvjrx5a5fl81xv2cf7x3n4f2a"))))
     (build-system r-build-system)
     (arguments
      `(#:modules ((guix build utils)
@@ -1122,14 +1122,14 @@ coordinates.")
 (define-public r-rgooglemaps
   (package
     (name "r-rgooglemaps")
-    (version "1.4.3")
+    (version "1.4.4")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "RgoogleMaps" version))
        (sha256
         (base32
-         "06ab3lg1rwm93hkshf1vxfm8mlxq5qsjan0wx43lhnrysay65js4"))))
+         "0sbklacc4jl5524ixhc11mh6smrzdz4l9pji6cn402i6zdn9z05x"))))
     (properties `((upstream-name . "RgoogleMaps")))
     (build-system r-build-system)
     (propagated-inputs `(("r-png" ,r-png)))
@@ -1441,14 +1441,14 @@ processes.  Most of its code is based on the @code{psutil} Python package.")
 (define-public r-pkgbuild
   (package
     (name "r-pkgbuild")
-    (version "1.0.4")
+    (version "1.0.5")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "pkgbuild" version))
        (sha256
         (base32
-         "0prvx91dha5pvd0k4jca2arkngvi6vnfs2indmiy3kwwzyjyyd19"))))
+         "0y4i85axwajrk67h3w6fiqfm6wxmhn3dr240w5l2nvqg3ahpxc8q"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-callr" ,r-callr)
@@ -1649,14 +1649,14 @@ validation and filtering on the values, making options invisible or private.")
 (define-public r-circlize
   (package
     (name "r-circlize")
-    (version "0.4.6")
+    (version "0.4.7")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "circlize" version))
        (sha256
         (base32
-         "1yjnb88pnzk5c1p0vjxykc7cr3394ln5axviqcf12ajibvy8rj6f"))))
+         "07y1bchkslpz2wl43yg5j5h1nl9z0i425a07jdmfd5avrynd8p3m"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-colorspace" ,r-colorspace)
@@ -2663,14 +2663,14 @@ Optimization problems by using the simplex algorithm.")
 (define-public r-geometry
   (package
     (name "r-geometry")
-    (version "0.4.2")
+    (version "0.4.3")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "geometry" version))
        (sha256
         (base32
-         "0vq334115qi039vy198ggv1dsp6n1s6jwcm9ivipf5r8lbm287zz"))))
+         "0z4491mhfmrlbb8lazjvq55alrprx7k0abg2d39fj0lsj84cls1r"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-magic" ,r-magic)
@@ -3476,14 +3476,14 @@ of Eigenmatrices} (JADE).")
 (define-public r-dtw
   (package
     (name "r-dtw")
-    (version "1.20-1")
+    (version "1.21-3")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "dtw" version))
        (sha256
         (base32
-         "1w301xwizncy5r8v9rwwdxfshydgp3l1pnjla1fjn6n8lx3imjj3"))))
+         "02hyhx1sy5h3vzh9zixy18a7d47df4k5d0wyflcvlcbsbcl6p90s"))))
     (build-system r-build-system)
     (propagated-inputs `(("r-proxy" ,r-proxy)))
     (home-page "http://dtw.r-forge.r-project.org/")
@@ -3765,14 +3765,14 @@ Markdown documents.")
 (define-public r-seriation
   (package
     (name "r-seriation")
-    (version "1.2-7")
+    (version "1.2-8")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "seriation" version))
        (sha256
         (base32
-         "0dbz5b5msy4fr2whhphyriqk1xc6305zpjq59rrwxyz3d7rzwpa6"))))
+         "1zbdxq0s5rc5v307b69fw9k52m0654ls7pf22lh35ggirig6lwsk"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-cluster" ,r-cluster)
@@ -3799,14 +3799,14 @@ iVAT).")
 (define-public r-xfun
   (package
     (name "r-xfun")
-    (version "0.8")
+    (version "0.9")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "xfun" version))
        (sha256
         (base32
-         "05jlbi5byqpw0fkhmmxqglnaxh9gwbcigx77kcpw1pkxnpwfry62"))))
+         "1c3wmy6s4ck821mwl7i2g8cxd31g30llbpivbgq21g1rxs4zwlyl"))))
     (build-system r-build-system)
     (home-page "https://github.com/yihui/xfun")
     (synopsis "Miscellaneous functions")
@@ -4699,14 +4699,14 @@ systems.")
 (define-public r-radiant-data
   (package
     (name "r-radiant-data")
-    (version "1.0.0")
+    (version "1.0.6")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "radiant.data" version))
        (sha256
         (base32
-         "0b35jn4mcj10hqra18l8pi6s4pvj6fxipslbn6hkr4zza1z27gzw"))
+         "08x7zasxf429m021482p86lx3zc6dqz2mih0id8s34isg4gafapg"))
        (modules '((guix build utils)))
        (snippet
         '(begin
@@ -5064,14 +5064,14 @@ evaluated by the @dfn{Akaike Information Criterion} (AIC).")
 (define-public r-arules
   (package
     (name "r-arules")
-    (version "1.6-3")
+    (version "1.6-4")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "arules" version))
        (sha256
         (base32
-         "0dimrq1pz449z0mz9m87nhm5bpc0v789bcc3lghhh97wwi5zah9y"))))
+         "003c5cd3xzq39h7c19px077ygm0n1v7k83icy5zzrnkagyds2p8n"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-matrix" ,r-matrix)))
@@ -5161,14 +5161,14 @@ misclassification probabilities of different models.")
 (define-public r-zip
   (package
     (name "r-zip")
-    (version "2.0.3")
+    (version "2.0.4")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "zip" version))
        (sha256
         (base32
-         "0zii05jg9v9ljd0wd67g9x4bhlmpmsy5dzd093sbnc5n3vjbi32a"))))
+         "1c02amk3pl6xir5jnbfiwiv2wvpkpbkkb1w71y6lf2yk7g3d0pdb"))))
     (build-system r-build-system)
     (home-page "https://github.com/gaborcsardi/zip")
     (synopsis "Cross-platform Zip compression")
@@ -6921,14 +6921,14 @@ used to teach mathematics, statistics, computation and modeling.")
 (define-public r-raster
   (package
     (name "r-raster")
-    (version "2.9-23")
+    (version "3.0-2")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "raster" version))
        (sha256
         (base32
-         "1brqigic8ygr223bp2hgk5qjz3q03r4sfglrv4an0ghy7fgfralh"))))
+         "0z4qh3ag1iyly4zjvzi3x2namkndkqn3cjb3ac22xd11sq5gdgiz"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-rcpp" ,r-rcpp)
@@ -7489,14 +7489,14 @@ multiple-imputation datasets.")
 (define-public r-magick
   (package
     (name "r-magick")
-    (version "2.1")
+    (version "2.2")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "magick" version))
        (sha256
         (base32
-         "1pz71maz05gx4ds1wfw0alggc8nn2w75lj12dg1zr72s3kybhkzg"))))
+         "1xh5mhaks3wk1iwqs9d3lnbfv121lc1yz5fqdzk5il9ppr831l85"))))
     (build-system r-build-system)
     (inputs
      `(("imagemagick" ,imagemagick)
@@ -7927,14 +7927,14 @@ Cohen (1988).")
 (define-public r-libcoin
   (package
     (name "r-libcoin")
-    (version "1.0-4")
+    (version "1.0-5")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "libcoin" version))
        (sha256
         (base32
-         "1i893ij9vkmc4y721npw1s3prmmcs2da5vf3ajm0j8ccmfhbmp4i"))))
+         "1cm9x1dlg9f7fh7n5nw3x4a7rl88c7ylrlc8x3rx4mq5w1j42x0a"))))
     (build-system r-build-system)
     (propagated-inputs `(("r-mvtnorm" ,r-mvtnorm)))
     (home-page "https://cran.r-project.org/web/packages/libcoin")
@@ -7947,14 +7947,14 @@ and permutation inference in the framework of Strasser and Weber (1999).")
 (define-public r-coin
   (package
     (name "r-coin")
-    (version "1.3-0")
+    (version "1.3-1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "coin" version))
        (sha256
         (base32
-         "1y0yl4mjaxca0jqz53sv1gcpdg89m099rq61iszxvpx7w0vvpkmd"))))
+         "0qi03fyqw42a2vnqcia5l2m1mzyarj2q1iblknx9n19bdsd53qjx"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-libcoin" ,r-libcoin)
@@ -8518,14 +8518,14 @@ ways.")
 (define-public r-summarytools
   (package
     (name "r-summarytools")
-    (version "0.9.3")
+    (version "0.9.4")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "summarytools" version))
        (sha256
         (base32
-         "1wfbkgvicaic37zgpr6zcm4a58yx43p59h0sqggdj44ncqs7147f"))))
+         "1n695baz56mg4f13xjjadfq0xalw5xsn6xicil0yap5hgi8fsr3a"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-checkmate" ,r-checkmate)
@@ -8696,14 +8696,14 @@ analysing multivariate abundance data in community ecology.")
 (define-public r-afex
   (package
     (name "r-afex")
-    (version "0.24-1")
+    (version "0.25-1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "afex" version))
        (sha256
         (base32
-         "14w7kcwr5hxmjcjmdm5ia9ka3bw1nl18pxlm1vpw62nmvicn3455"))))
+         "12n020y7rjm7402940gkqxa5j901p093f381i23p66fa3fyrshkf"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-car" ,r-car)
@@ -8930,14 +8930,14 @@ Bioconductor packages.")
 (define-public r-rgl
   (package
     (name "r-rgl")
-    (version "0.100.26")
+    (version "0.100.30")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "rgl" version))
        (sha256
         (base32
-         "0h77akviwjd86j2qyx326xynbmwhypd6ydprzlwqnidd4ckrr271"))))
+         "0rzqzskcwf2ah4yr62x5rjwf7yh90d43h39gk7jmfc5lc08zaxc5"))))
     (build-system r-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)))
@@ -9325,6 +9325,51 @@ in-memory raw vectors.")
     ;; Either of these two license versions.
     (license (list license:gpl2 license:gpl3))))
 
+(define-public r-nlp
+  (package
+    (name "r-nlp")
+    (version "0.2-0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "NLP" version))
+       (sha256
+        (base32
+         "0xbhkrnxcbf322jfw31xcn4y2gnk5y7ccq1bz4h3prf44h0whr7w"))))
+    (properties `((upstream-name . "NLP")))
+    (build-system r-build-system)
+    (home-page "https://cran.r-project.org/web/packages/NLP/")
+    (synopsis "Natural language processing infrastructure")
+    (description
+     "This package provides basic classes and methods for Natural Language
+Processing.")
+    (license license:gpl3)))
+
+(define-public r-tm
+  (package
+    (name "r-tm")
+    (version "0.7-6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "tm" version))
+       (sha256
+        (base32
+         "0spv43kjbpxq3rdxx8ysgrncjyc35ydiwk7gp8n4sig45iqyz59r"))))
+    (properties `((upstream-name . "tm")))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-bh" ,r-bh)
+       ("r-nlp" ,r-nlp)
+       ("r-rcpp" ,r-rcpp)
+       ("r-slam" ,r-slam)
+       ("r-xml2" ,r-xml2)))
+    (home-page "http://tm.r-forge.r-project.org/")
+    (synopsis "Text mining package")
+    (description
+     "This package provides a framework for text mining applications within R.")
+    (license license:gpl3)))
+
 (define-public r-waveslim
   (package
     (name "r-waveslim")
@@ -9364,7 +9409,10 @@ pairs (Selesnick 2001, 2002).")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-rcolorbrewer" ,r-rcolorbrewer)
-       ("r-rcpp" ,r-rcpp)))
+       ("r-rcpp" ,r-rcpp)
+       ;; The "tm" package is only "suggested" according to CRAN, but the
+       ;; wordcloud package cannot be loaded without it.
+       ("r-tm" ,r-tm)))
     (home-page "https://cran.r-project.org/web/packages/wordcloud")
     (synopsis "Word clouds")
     (description
@@ -10749,14 +10797,14 @@ Differences with other sparse matrix packages are:
 (define-public r-fields
   (package
     (name "r-fields")
-    (version "9.8-3")
+    (version "9.8-6")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "fields" version))
        (sha256
         (base32
-         "1q9x68dczjym56v7x90x4x5br59vj3dww6w8v42zd3yl17h7c1h1"))))
+         "07x95vk1idjfzi5ikn0ijal754mssdmgr1p4nswmx9w3i5ndcqaz"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-maps" ,r-maps)
@@ -11786,14 +11834,14 @@ select colors to use in your R code.")
 (define-public r-ggextra
   (package
     (name "r-ggextra")
-    (version "0.8")
+    (version "0.9")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "ggExtra" version))
        (sha256
         (base32
-         "1m5zpn3l3p1y3d2692gyz50m63d58m2a3b7zb595kvcffdx2qr5b"))))
+         "18mbi6gblqmrsciad1d2c9ngllk6mayaqj43k40hjq9ydqnvjbgj"))))
     (properties `((upstream-name . "ggExtra")))
     (build-system r-build-system)
     (propagated-inputs
@@ -11801,6 +11849,7 @@ select colors to use in your R code.")
        ("r-ggplot2" ,r-ggplot2)
        ("r-gtable" ,r-gtable)
        ("r-miniui" ,r-miniui)
+       ("r-r6" ,r-r6)
        ("r-scales" ,r-scales)
        ("r-shiny" ,r-shiny)
        ("r-shinyjs" ,r-shinyjs)))
@@ -11900,14 +11949,14 @@ probabilities from a standard bivariate normal CDF.")
 (define-public r-lavaan
   (package
     (name "r-lavaan")
-    (version "0.6-4")
+    (version "0.6-5")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "lavaan" version))
        (sha256
         (base32
-         "1zf0sxpms35rhq2syb7r3sshhc8kjvc3pv97dk9x0gf4xl7pck4g"))))
+         "04kvsh2m6mnzlhv83phr3hjzy4sx1ck6f7dgsm7xb8cs84dnxszy"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-mass" ,r-mass)
@@ -12189,14 +12238,14 @@ network.")
 (define-public r-apcluster
   (package
     (name "r-apcluster")
-    (version "1.4.7")
+    (version "1.4.8")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "apcluster" version))
        (sha256
         (base32
-         "188hdfmwjjx3aic599nwmkzjqm9j9jighi5bly6qd43c1vj6ih2s"))))
+         "0lzf2jqm56i74wif6x5sw3j0w2qc4sni49zq2fgbl89b7lwkvchj"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-matrix" ,r-matrix)
@@ -12347,17 +12396,17 @@ extensions.")
 (define-public r-wgaim
   (package
     (name "r-wgaim")
-    (version "1.4-11")
+    (version "2.0-0")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "wgaim" version))
        (sha256
         (base32
-         "1jjyp100dcjjczp61xlvhmy48ynniqcys535vzbgswhr7fvijymg"))))
+         "0wnb10vibgq8h1ly6lq8kzymf30vx0j0g8fc2zidblbvwag9ka1g"))))
     (build-system r-build-system)
     (propagated-inputs
-     `(("r-lattice" ,r-lattice)
+     `(("r-ggplot2" ,r-ggplot2)
        ("r-qtl" ,r-qtl)))
     (home-page "https://cran.r-project.org/web/packages/wgaim")
     (synopsis "Whole genome average interval mapping for QTL detection")
@@ -12566,14 +12615,14 @@ utilities for sequence data management under the ACNUC system.")
 (define-public r-units
   (package
     (name "r-units")
-    (version "0.6-3")
+    (version "0.6-4")
     (source
       (origin
         (method url-fetch)
         (uri (cran-uri "units" version))
         (sha256
           (base32
-            "0kx640h60s3zzkdr302asap7diap6vri6d41scnx507yvkcqiph3"))))
+            "1jz0mzd78sdfxkhqw041ji50hmhjk2ha55i31yjvz35nsw30lwi5"))))
     (build-system r-build-system)
     (inputs
      `(("udunits" ,udunits)))
@@ -13121,14 +13170,14 @@ exact test for Hardy-Weinberg equilibrium.")
 (define-public r-tdthap
   (package
     (name "r-tdthap")
-    (version "1.1-9")
+    (version "1.1-11")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "tdthap" version))
        (sha256
         (base32
-         "0y01x0hcf0rw06cpn4pk17b0shf4v2c9was7vfs0zhsbq8qcwx7r"))))
+         "15qlj2bivvz3pizd8dq34wczbkbxhzqh3cqp1ixkdkprlyvcxj5k"))))
     (build-system r-build-system)
     (home-page "https://cran.r-project.org/web/packages/tdthap/")
     (synopsis "TDT tests for extended haplotypes")
@@ -13164,13 +13213,13 @@ SELECT or UPDATE queries to an end-point.")
 (define-public r-bookdown
   (package
     (name "r-bookdown")
-    (version "0.12")
+    (version "0.13")
     (source (origin
               (method url-fetch)
               (uri (cran-uri "bookdown" version))
               (sha256
                (base32
-                "1c2v0rpa1rrpbx8yb66sfvrf4gf57f6a8x7ydjqqbkbwhxdlrsrq"))))
+                "15r9scgnq68hmfcfxvjk286hpbr825bib1d2kgh0lv3dgz2i2bg1"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-htmltools" ,r-htmltools)
@@ -13764,14 +13813,14 @@ sets of URLs.")
 (define-public r-ggforce
   (package
     (name "r-ggforce")
-    (version "0.3.0")
+    (version "0.3.1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "ggforce" version))
        (sha256
         (base32
-         "118qyzy8h9kkkdpjd09667gxgw7xy1kbc8r87pswh54ixn8hymwk"))))
+         "04926cqrda6psvy2nzkkw4czwyxdp7fnxg76byp14v12kgd72lm0"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-ggplot2" ,r-ggplot2)
@@ -14616,14 +14665,14 @@ engine (Salmon et al., 2011) as provided by the package @code{sitmo}.")
 (define-public r-dalex
   (package
     (name "r-dalex")
-    (version "0.4.4")
+    (version "0.4.7")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "DALEX" version))
        (sha256
         (base32
-         "04i17ni8g595jj8dxdfwr9vsxmdn2kkam90ab68vlwws3ywqjl6r"))))
+         "0iiwkf0pfdb90lf1xhv43qd32z3cjmkmf0ly9841n5lldkjazy3h"))))
     (properties `((upstream-name . "DALEX")))
     (build-system r-build-system)
     (propagated-inputs `(("r-ggplot2" ,r-ggplot2)))
@@ -14642,14 +14691,14 @@ and model output.")
 (define-public r-enrichr
   (package
     (name "r-enrichr")
-    (version "2.0")
+    (version "2.1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "enrichR" version))
        (sha256
         (base32
-         "056m6hksfss29fj7zvlk7pbh8g3gq84kjh3240isrsnhp9m1h9iz"))))
+         "0ymhzs9d2wl0s9rvbqc1hqb78mlzwhlc7mmijpfqkm5r720pf6m1"))))
     (properties `((upstream-name . "enrichR")))
     (build-system r-build-system)
     (propagated-inputs
@@ -14812,17 +14861,18 @@ easily.")
 (define-public r-umap
   (package
     (name "r-umap")
-    (version "0.2.2.0")
+    (version "0.2.3.1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "umap" version))
        (sha256
         (base32
-         "1s82w9gy1387h7cprjfbhp49l89zbmn3gc9s0wzqb1s73nza9n31"))))
+         "0rzz1s029cn1w1bf5va2pav2lg9j1mq97ibwcln39drvm67kj76d"))))
     (build-system r-build-system)
     (propagated-inputs
-     `(("r-rcpp" ,r-rcpp)
+     `(("r-openssl" ,r-openssl)
+       ("r-rcpp" ,r-rcpp)
        ("r-reticulate" ,r-reticulate)
        ("r-rspectra" ,r-rspectra)))
     (home-page "https://github.com/tkonopka/umap")
@@ -14993,6 +15043,32 @@ radius searches and @code{bd} as well as @code{kd} trees.  The distance is
 computed using the L1 (Manhattan, taxicab) metric.")
     (license license:gpl3+)))
 
+(define-public r-leiden
+  (package
+    (name "r-leiden")
+    (version "0.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "leiden" version))
+       (sha256
+        (base32
+         "19gq27zin4gf4sh7h24gyq3f8jjir20n2l36a7pk1pbzcr4ixyhp"))))
+    (properties `((upstream-name . "leiden")))
+    (build-system r-build-system)
+    (propagated-inputs
+     `(("r-igraph" ,r-igraph)
+       ("r-matrix" ,r-matrix)
+       ("r-reticulate" ,r-reticulate)))
+    (home-page "https://github.com/TomKellyGenetics/leiden")
+    (synopsis "R implementation of Leiden clustering algorithm")
+    (description
+     "This package implements the Python @code{leidenalg} module to be called
+in R.  It enables clustering using the Leiden algorithm for partitioning a
+graph into communities.  See also Traag et al (2018) \"From Louvain to Leiden:
+guaranteeing well-connected communities.\" <arXiv:1810.08473>.")
+    (license license:gpl3)))
+
 (define-public r-patchwork
   ;; There has been no public release yet.
   (let ((commit "fd7958bae3e7a1e30237c751952e412a0a1d1242")
diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index c3d2419f88..e138b93e9b 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -2,6 +2,7 @@
 ;;; Copyright © 2019 Ivan Petkov <ivanppetkov@gmail.com>
 ;;; Copyright © 2019 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2019 Nicolas Goaziou <mail@nicolasgoaziou.fr>
+;;; Copyright © 2019 Giacomo Leidi <goodoldpaul@autistici.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -23,12 +24,73 @@
   #:use-module (guix download)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix packages)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages gcc)
+  #:use-module (gnu packages jemalloc)
+  #:use-module (gnu packages llvm)
+  #:use-module (gnu packages maths)
   #:use-module (gnu packages pkg-config))
 
 ;;;
 ;;; Please: Try to add new module packages in alphabetic order.
 ;;;
 
+(define-public rust-adler32
+  (package
+    (name "rust-adler32")
+    (version "1.0.3")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "adler32" version))
+        (file-name
+          (string-append name "-" version ".tar.gz"))
+        (sha256
+          (base32
+            "0p7fxlnks9l7p7rwfqi7aqgnk2bps5zc0rjiw00mdw19nnbjjlky"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs (("rust-rand" ,rust-rand))))
+    (home-page "https://github.com/remram44/adler32-rs")
+    (synopsis "Implementation of the Adler32 rolling hash algorithm")
+    (description
+     "This library is an implementation of the Adler32 rolling hash algorithm in
+the Rust programming language.")
+    (license (list license:bsd-3
+                   license:zlib))))
+
+(define-public rust-ansi-term
+  (package
+    (name "rust-ansi-term")
+    (version "0.11.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "ansi_term" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "16wpvrghvd0353584i1idnsgm0r3vchg8fyrm0x8ayv1rgvbljgf"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-winapi" ,rust-winapi))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'fix-tests
+           ;; https://github.com/ogham/rust-ansi-term/commit/5ff6af6f38790abcb3aafee1239286c10ef69576.patch
+           (lambda _
+             (substitute* "src/debug.rs"
+               (("^ *Blue") "        Blue,")
+               (("underline: false") "underline: false,"))
+             #t)))))
+    (home-page "https://github.com/ogham/rust-ansi-term")
+    (synopsis "Library for ANSI terminal colours and styles")
+    (description
+     "This is a library for controlling colours and formatting, such as red bold
+text or blue underlined text, on ANSI terminals.")
+    (license license:expat)))
+
 (define-public rust-antidote
   (package
     (name "rust-antidote")
@@ -96,6 +158,29 @@ support.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-base-x
+  (package
+    (name "rust-base-x")
+    (version "0.2.5")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "base-x" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0hv4y5cdhv6bk0ghk2434clw8v4mmk5cc9lsh6qrpri92zlfmx3n"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-bencher" ,rust-bencher)
+        ("rust-json" ,rust-json)
+        ("rust-rand" ,rust-rand-0.3))))
+    (home-page "https://github.com/OrKoN/base-x-rs")
+    (synopsis "Encode/decode any base")
+    (description "This library provides for encoding and decoding any base.")
+    (license license:expat)))
+
 (define-public rust-bencher
   (package
     (name "rust-bencher")
@@ -160,6 +245,29 @@ behave like a set of bitflags.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-cargon
+  (package
+    (name "rust-cargon")
+    (version "0.0.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "cargon" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1cszlab7jk736p0lb50ag4l9nv72m7j41bwrmygl0lr4iz0350w2"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-gcc" ,rust-gcc))))
+    (home-page "https://github.com/bryant/argon2rs")
+    (synopsis "Thin wrapper around the Argon2 C library")
+    (description
+     "This package provides a thin wrapper around the Argon2 C library.  It is
+used in argon2rs' bench suite.")
+    (license license:wtfpl2)))
+
 (define-public rust-cblas-sys
   (package
     (name "rust-cblas-sys")
@@ -182,6 +290,45 @@ behave like a set of bitflags.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-cc
+  (package
+    (name "rust-cc")
+    (version "1.0.41")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "cc" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1zxzd559dbbf1iwdzmkj7czapzccs17kqqmsj9ayijpdix5rrbld"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(;#:cargo-inputs
+       ;(("rust-rayon" ,rust-rayon))
+       #:cargo-development-inputs
+       (("rust-tempdir" ,rust-tempdir))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'remove-optional-deps
+           (lambda _
+             (substitute* "Cargo.toml.orig"
+               ((".*optional.*") "\n")
+               ((".*features.*") "")
+               ((".*parallel.*") ""))
+             (delete-file "Cargo.toml")
+             (copy-file "Cargo.toml.orig" "Cargo.toml")
+             #t)))
+       #:tests? #f)) ; Tests require cc-test from git repo.
+    (home-page "https://github.com/alexcrichton/cc-rs")
+    (synopsis "Invoke the native C compiler")
+    (description
+     "This package provides a build-time dependency for Cargo build scripts to
+assist in invoking the native C compiler to compile native C code into a static
+archive to be linked into Rustcode.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-cfg-if
   (package
     (name "rust-cfg-if")
@@ -203,6 +350,42 @@ depending on a large number of #[cfg] parameters.  Structured like an
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-clang-sys
+  (package
+    (name "rust-clang-sys")
+    (version "0.28.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "clang-sys" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0ls8zcqi5bmmrvrk3b6r1ym4wlivinbv590d2dvg2xn9f44mbpl1"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-glob" ,rust-glob)
+        ("rust-libc" ,rust-libc)
+        ("rust-libloading" ,rust-libloading))
+       #:cargo-development-inputs
+       (("rust-glob" ,rust-glob))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'set-environmental-variable
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let ((clang (assoc-ref inputs "libclang")))
+               (setenv "LIBCLANG_PATH"
+                       (string-append clang "/lib")))
+             #t)))))
+    (inputs
+     `(("libclang" ,clang)))
+    (home-page "https://github.com/KyleMayes/clang-sys")
+    (synopsis "Rust bindings for libclang")
+    (description
+     "This package provides Rust bindings for @code{libclang}.")
+    (license license:asl2.0)))
+
 (define-public rust-clicolors-control
   (package
     (name "rust-clicolors-control")
@@ -251,6 +434,81 @@ colorization.")
      "Low level interface to CloudABI.  Contains all syscalls and related types.")
     (license license:bsd-2)))
 
+(define-public rust-cmake
+  (package
+    (name "rust-cmake")
+    (version "0.1.42")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "cmake" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0qkwibkvx5xjazvv9v8gvdlpky2jhjxvcz014nrixgzqfyv2byw1"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-cc" ,rust-cc))))
+    (home-page "https://github.com/alexcrichton/cmake-rs")
+    (synopsis "Rust build dependency for running cmake")
+    (description
+     "This package provides a build dependency for running @code{cmake} to build
+a native library.  The CMake executable is assumed to be @code{cmake} unless the
+CMAKE environmental variable is set.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+;; This package requires features which are unavailable
+;; on the stable releases of Rust.
+(define-public rust-compiler-builtins
+  (package
+    (name "rust-compiler-builtins")
+    (version "0.1.19")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "compiler_builtins" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1fpabpmg8paj4r5a37vmidh1jx1b7a6ilxm4s3xsxczx27ybjcjf"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cc" ,rust-cc)
+        ("rust-rustc-std-workspace-core"
+         ,rust-rustc-std-workspace-core))))
+    (home-page "https://github.com/rust-lang-nursery/compiler-builtins")
+    (synopsis "Compiler intrinsics used by the Rust compiler")
+    (description
+     "This package provides compiler intrinsics used by the Rust compiler.  This
+package is primarily useful when building the @code{core} crate yourself and you
+need compiler-rt intrinsics.")
+    (properties `((hidden? . #t)))
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-constant-time-eq
+  (package
+    (name "rust-constant-time-eq")
+    (version "0.1.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "constant_time_eq" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "083icpr9xb72rrdxw3p4068dcspn6ai22jy7rhl2a8grfz448nlr"))))
+    (build-system cargo-build-system)
+    (home-page "https://github.com/cesarb/constant_time_eq")
+    (synopsis
+     "Compares two equal-sized byte strings in constant time")
+    (description
+     "This package compares two equal-sized byte strings in constant time.
+It is inspired by the Linux kernel's @code{crypto_memneq}.")
+    (license license:cc0)))
+
 (define-public rust-core-foundation-sys
   (package
     (name "rust-core-foundation-sys")
@@ -405,6 +663,38 @@ provides implementations for @code{HashMap} and @code{HashSet}.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-filetime
+  (package
+    (name "rust-filetime")
+    (version "0.2.7")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "filetime" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0sflihq2l77xjrza7yjalnxsc7dxzg25rhzcfbd9vmyfah5kimvb"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cfg-if" ,rust-cfg-if)
+        ("rust-libc" ,rust-libc)
+        ("rust-redox-syscall" ,rust-redox-syscall)
+        ("rust-winapi" ,rust-winapi))
+       #:cargo-development-inputs
+       (("rust-tempdir" ,rust-tempdir))))
+    (home-page "https://github.com/alexcrichton/filetime")
+    (synopsis "Platform-agnostic accessors of timestamps in File metadata")
+    (description
+     "This library contains a helper library for inspecting and setting the
+various timestamps of files in Rust.  This library takes into account
+cross-platform differences in terms of where the timestamps are located, what
+they are called, and how to convert them into a platform-independent
+representation.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-findshlibs
   (package
     (name "rust-findshlibs")
@@ -443,7 +733,7 @@ cross platform API.")
          (base32
           "0czam11mi80dbyhf4rd4lz0ihcf7vkfchrdcrn45wbs0h40dxm46"))))
     (build-system cargo-build-system)
-    (home-page "https://github.com/bluss/fixedbitset")
+    (home-page "https://github.com/petgraph/fixedbitset")
     (synopsis "FixedBitSet is a simple bitset collection")
     (description "FixedBitSet is a simple bitset collection.")
     (license (list license:asl2.0
@@ -610,7 +900,7 @@ featuring zero allocations, composability, and iterator-like interfaces.")
      `(#:cargo-inputs
        (("rust-futures" ,rust-futures)
         ("rust-num-cpus" ,rust-num-cpus))))
-    (home-page "https://github.com/alexcrichton/futures-rs")
+    (home-page "https://github.com/rust-lang-nursery/futures-rs")
     (synopsis "Implementation of thread pools which hand out futures")
     (description
      "An implementation of thread pools which hand out futures to the results of
@@ -638,6 +928,125 @@ the computation on the threads themselves.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-gcc
+  (package
+    (inherit rust-cc)
+    (name "rust-gcc")
+    (version "0.3.55")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "gcc" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1hng1sajn4r67hndvhjysswz8niayjwvcj42zphpxzhbz89kjpwg"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(;#:cargo-inputs
+       ;(("rust-rayon" ,rust-rayon))
+       #:cargo-development-inputs
+       (("rust-tempdir" ,rust-tempdir))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'remove-optional-deps
+           (lambda _
+             (substitute* "Cargo.toml.orig"
+               ((".*optional.*") "\n")
+               ((".*features.*") "")
+               ((".*parallel.*") ""))
+             (delete-file "Cargo.toml")
+             (copy-file "Cargo.toml.orig" "Cargo.toml")
+             #t)))
+       #:tests? #f))
+    (home-page "https://github.com/alexcrichton/cc-rs")
+    (synopsis "Library to compile C/C++ code into a Rust library/application")
+    (description
+     "This package provides a build-time dependency for Cargo build scripts to
+assist in invoking the native C compiler to compile native C code into a static
+archive to be linked into Rustcode.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-getopts
+  (package
+    (name "rust-getopts")
+    (version "0.2.17")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "getopts" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "018yhq97zgcrcxwhj3pxh31h83704sgaiijdnpl0r1ir366c005r"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-log" ,rust-log))))
+    (home-page "https://github.com/rust-lang-nursery/getopts")
+    (synopsis "Rust library for option parsing for CLI utilities")
+    (description "This library provides getopts-like option parsing.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-glob
+  (package
+    (name "rust-glob")
+    (version "0.3.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "glob" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0x25wfr7vg3mzxc9x05dcphvd3nwlcmbnxrvwcvrrdwplcrrk4cv"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-tempdir" ,rust-tempdir))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'fix-tests
+           ;; This test assumes /root exists but is unreadable by the user.
+           (lambda _
+             (substitute* "src/lib.rs"
+               (("cfg\\(all\\(unix,.*") "cfg(windows)]\n"))
+             #t)))))
+    (home-page "https://github.com/rust-lang-nursery/glob")
+    (synopsis "Match file paths against Unix shell style patterns")
+    (description
+     "This package provides support for matching file paths against Unix
+shell style patterns.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-glob-0.2
+  (package
+    (inherit rust-glob)
+    (name "rust-glob")
+    (version "0.2.11")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "glob" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1ysvi72slkw784fcsymgj4308c3y03gwjjzqxp80xdjnkbh8vqcb"))))
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-tempdir" ,rust-tempdir))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'fix-tests
+           ;; This test assumes /root exists but is unreadable by the user.
+           (lambda _
+             (substitute* "src/lib.rs"
+               (("cfg\\(unix") "cfg(windows"))
+             #t)))))))
+
 (define-public rust-heapsize
   (package
     (name "rust-heapsize")
@@ -664,6 +1073,54 @@ heap.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-heapsize-0.3
+  (package
+    (inherit rust-heapsize)
+    (name "rust-heapsize")
+    (version "0.3.9")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "heapsize" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0dmwc37vgsdjzk10443dj4f23439i9gch28jcwzmry3chrwx8v2m"))))
+    (arguments
+     `(#:cargo-inputs (("rust-kernel32-sys" ,rust-kernel32-sys))
+       #:tests? #f)))) ;; No flexible-tests feature flags on this release.
+
+;; This package makes use of removed features
+(define-public rust-heapsize-plugin
+  (package
+    (name "rust-heapsize-plugin")
+    (version "0.1.6")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "heapsize_plugin" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1i72isf699q9jl167g2kg4xd6h3cd05rc79zaph58aqjy0g0m9y9"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs (("rust-heapsize" ,rust-heapsize-0.3))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'fix-Cargo-toml
+           (lambda _
+             (substitute* "Cargo.toml"
+               (("path = \"..\", ") ""))
+             #t)))))
+    (home-page "https://github.com/servo/heapsize")
+    (synopsis "Measure runtime size of an object on the heap")
+    (description
+     "This package automatically generates infrastructure for measuring the
+total runtime size of an object on the heap")
+    (properties `((hidden? . #t)))
+    (license license:mpl2.0)))
+
 (define-public rust-hex
   (package
     (name "rust-hex")
@@ -751,6 +1208,41 @@ primitives to an @code{io::Write}.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-jemalloc-sys
+  (package
+    (name "rust-jemalloc-sys")
+    (version "0.3.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "jemalloc-sys" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0ify9vlql01qhfxlj7d4p9jvcp90mj2h69nkbq7slccvbhzryfqd"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc)
+        ("rust-cc" ,rust-cc)
+        ("rust-fs-extra" ,rust-fs-extra))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'override-jemalloc
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let ((jemalloc (assoc-ref inputs "jemalloc")))
+               (delete-file-recursively "jemalloc")
+               (setenv "JEMALLOC_OVERRIDE"
+                       (string-append jemalloc "/lib/libjemalloc_pic.a")))
+             #t)))))
+    (inputs
+     `(("jemalloc" ,jemalloc)))
+    (home-page "https://github.com/gnzlbg/jemallocator")
+    (synopsis "Rust FFI bindings to jemalloc")
+    (description "This package provides Rust FFI bindings to jemalloc.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-json
   (package
     (name "rust-json")
@@ -801,6 +1293,34 @@ friction with idiomatic Rust structs to ease interopability.")
 kernel32.")
     (license license:expat)))
 
+(define-public rust-language-tags
+  (package
+    (name "rust-language-tags")
+    (version "0.2.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "language-tags" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "16hrjdpa827carq5x4b8zhas24d8kg4s16m6nmmn1kb7cr5qh7d9"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-heapsize" ,rust-heapsize-0.3))
+       #:cargo-development-inputs
+       (("rust-heapsize-plugin" ,rust-heapsize-plugin))))
+    (home-page "https://github.com/pyfisch/rust-language-tags")
+    (synopsis "Language tags for Rust")
+    (description
+     "Language tags can be used identify human languages, scripts e.g. Latin
+script, countries and other regions.  They are commonly used in HTML and HTTP
+@code{Content-Language} and @code{Accept-Language} header fields.  This package
+currently supports parsing (fully conformant parser), formatting and comparing
+language tags.")
+    (license license:expat)))
+
 (define-public rust-lazy-static
   (package
     (name "rust-lazy-static")
@@ -859,6 +1379,89 @@ the platform that libc is compiled for.")
     (license (list license:expat
                    license:asl2.0))))
 
+(define-public rust-libloading
+  (package
+    (name "rust-libloading")
+    (version "0.5.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "libloading" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0lyply8rcqc8agajzxs7bq6ivba9dnn1i68kgb9z2flnfjh13cgj"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cc" ,rust-cc)
+        ("rust-winapi" ,rust-winapi))))
+    (home-page "https://github.com/nagisa/rust_libloading/")
+    (synopsis "Rust library for loading dynamic libraries")
+    (description
+     "A memory-safer wrapper around system dynamic library loading primitives.
+The most important safety guarantee by this library is prevention of
+dangling-Symbols that may occur after a Library is unloaded.  Using this library
+allows loading dynamic libraries (also known as shared libraries) as well as use
+functions and static variables these libraries contain.")
+    (license license:isc)))
+
+(define-public rust-log
+  (package
+    (name "rust-log")
+    (version "0.3.8")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "log" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0nsn28syc49vvjhxcfc8261rd1frhjc0r4bn9v3mqvps3ra7f3w8"))))
+    (build-system cargo-build-system)
+    (home-page "https://github.com/rust-lang-nursery/log")
+    (synopsis "Lightweight logging")
+    (description
+     "This package provides a lightweight logging facade for Rust")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-lzma-sys
+  (package
+    (name "rust-lzma-sys")
+    (version "0.1.15")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "lzma-sys" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "14gyj256yh0wm77jbvmlc39v7lfn0navpfrja4alczarzlc8ir2k"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cc" ,rust-cc)
+        ("rust-libc" ,rust-libc)
+        ("rust-pkg-config" ,rust-pkg-config))
+        #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'unbundle-xz
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let ((xz (assoc-ref inputs "xz")))
+               (delete-file-recursively "xz-5.2"))
+             #t)))))
+    (inputs
+     `(("pkg-config" ,pkg-config)
+       ("xz" ,xz)))
+    (home-page "https://github.com/alexcrichton/xz2-rs")
+    (synopsis "Bindings to liblzma for lzma and xz stream encoding/decoding")
+    (description
+     "This package contains the raw bindings to liblzma which contains an
+implementation of LZMA and xz stream encoding/decoding.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-maplit
   (package
     (name "rust-maplit")
@@ -917,6 +1520,53 @@ whether an expression matches a pattern.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-memmap
+  (package
+    (name "rust-memmap")
+    (version "0.7.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "memmap" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0ns7kkd1h4pijdkwfvw4qlbbmqmlmzwlq3g2676dcl5vwyazv1b5"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc)
+        ("rust-winapi" ,rust-winapi))
+       #:cargo-development-inputs
+       (("rust-tempdir" ,rust-tempdir))))
+    (home-page "https://github.com/danburkert/memmap-rs")
+    (synopsis "Rust library for cross-platform memory mapped IO")
+    (description
+     "This package provides a cross-platform Rust API for memory-mapped
+file IO.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-memmap-0.6
+  (package
+    (inherit rust-memmap)
+    (name "rust-memmap")
+    (version "0.6.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "memmap" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1zy6s0ni0lx9rjzq3gq2zz9r8zgjmbp02332g3gsj4fyhv4s5zz2"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc)
+        ("rust-winapi" ,rust-winapi))
+       #:cargo-development-inputs
+       (("rust-tempdir" ,rust-tempdir))))))
+
 (define-public rust-mime
   (package
     (name "rust-mime")
@@ -940,6 +1590,110 @@ whether an expression matches a pattern.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-miniz-oxide
+  (package
+    (name "rust-miniz-oxide")
+    (version "0.3.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "miniz_oxide" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "041s41l5w7z8pkp93pdzn8rngxr93q4wxp034pr0cvc7bgway23i"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-adler32" ,rust-adler32))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'fix-tests
+           (lambda _
+             (substitute* "tests/test.rs"
+               (("../miniz/miniz.c") "Cargo.toml"))
+             #t)))))
+    (home-page  "https://github.com/Frommi/miniz_oxide/tree/master/miniz_oxide")
+    (synopsis "Pure rust replacement for the miniz DEFLATE/zlib encoder/decoder")
+    (description
+     "A pure rust replacement for the miniz DEFLATE/zlib encoder/decoder.  Using
+@code{flate2} with the @code{rust_backend} feature provides an easy to use
+streaming API for miniz_oxide.")
+    (license license:expat)))
+
+(define-public rust-miniz-sys
+  (package
+    (name "rust-miniz-sys")
+    (version "0.1.12")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "miniz-sys" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "00l2r4anm8g35x0js2zfdnwfbrih9m43vphdpb77c5ga3kjkm7hy"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cc" ,rust-cc)
+        ("rust-libc" ,rust-libc))))
+    (home-page "https://github.com/alexcrichton/flate2-rs")
+    (synopsis "Bindings to the miniz.c library")
+    (description
+     "This package provides bindings to the @code{miniz.c} library.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-miow
+  (package
+    (name "rust-miow")
+    (version "0.3.3")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "miow" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "09ljvx6wg30f2xlv7b7hhpkw7k312n3hjgmrbhwzhz9x03ra0sir"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-socket2" ,rust-socket2)
+        ("rust-winapi" ,rust-winapi))
+       #:cargo-development-inputs
+       (("rust-rand" ,rust-rand))))
+    (home-page "https://github.com/alexcrichton/miow")
+    (synopsis "Rust I/O library for Windows")
+    (description
+     "This package provides a zero overhead I/O library for Windows, focusing on
+IOCP and Async I/O abstractions.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-miow-0.2
+  (package
+    (inherit rust-miow)
+    (name "rust-miow")
+    (version "0.2.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "miow" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "06g9b8sqlh5gxakwqq4rrib07afwanfnxgxajrldwcgk3hxjy7wc"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-kernel32-sys" ,rust-kernel32-sys)
+        ("rust-net2" ,rust-net2)
+        ("rust-winapi" ,rust-winapi-0.2)
+        ("rust-ws2-32-sys" ,rust-ws2-32-sys))
+       #:cargo-development-inputs
+       (("rust-rand" ,rust-rand-0.3))))))
+
 (define-public rust-modifier
   (package
     (name "rust-modifier")
@@ -986,6 +1740,42 @@ types as proposed in RFC 1158.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-netlib-src
+  (package
+    (name "rust-netlib-src")
+    (version "0.7.4")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "netlib-src" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "112hwfw1zzdj10h3j213xxqjrq38iygb3nb3ijay65ycmrg819s4"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-cmake" ,rust-cmake)
+        ("rust-libc" ,rust-libc))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'use-system-lapack
+           (lambda _
+             (delete-file-recursively "source")
+             (substitute* "Cargo.toml"
+               (("default .*")
+                "default = [\"system\"]\n"))
+             #t)))))
+    (inputs
+     `(("gfortran:lib" ,gfortran "lib")
+       ("lapack" ,lapack)))
+    (home-page "https://github.com/blas-lapack-rs/netlib-src")
+    (synopsis "Source of BLAS and LAPACK via Netlib")
+    (description
+     "The package provides a source of BLAS and LAPACK via Netlib.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-nodrop
   (package
     (name "rust-nodrop")
@@ -1133,6 +1923,76 @@ implementation (which is unstable / requires nightly).")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-openssl-probe
+  (package
+    (name "rust-openssl-probe")
+    (version "0.1.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "openssl-probe" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1pijrdifgsdwd45b08c2g0dsmnhz7c3kmagb70839ngrd7d29bvp"))))
+    (build-system cargo-build-system)
+    (home-page "https://github.com/alexcrichton/openssl-probe")
+    (synopsis "Find SSL certificate locations")
+    (description
+     "This package provides a tool to find SSL certificate locations on the
+system for OpenSSL.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-owning-ref
+  (package
+    (name "rust-owning-ref")
+    (version "0.4.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "owning_ref" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "04zgwy77lin8qz398s6g44467pd6kjhbrlqifkia5rkr47mbi929"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-stable-deref-trait" ,rust-stable-deref-trait))))
+    (home-page "https://github.com/Kimundi/owning-ref-rs")
+    (synopsis "Create references that carry their owner with them")
+    (description
+     "This package provides a library for creating references that carry their
+owner with them.  This can sometimes be useful because Rust borrowing rules
+normally prevent moving a type that has been borrowed from.")
+    (license license:expat)))
+
+(define-public rust-parity-wasm
+  (package
+    (name "rust-parity-wasm")
+    (version "0.40.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "parity-wasm" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1p84f0k36q05j18jy66n122lyali794cj78hbxgy9wj6si84plqd"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-time" ,rust-time))
+       #:tests? #f)) ; Test files are not included in release.
+    (home-page "https://github.com/paritytech/parity-wasm")
+    (synopsis "Low-level WebAssembly format library")
+    (description
+     "This package provides a WebAssembly binary format serialization,
+deserialization, and interpreter in Rust.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-peeking-take-while
   (package
     (name "rust-peeking-take-while")
@@ -1197,6 +2057,29 @@ algorithm.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-pico-sys
+  (package
+    (name "rust-pico-sys")
+    (version "0.0.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "pico-sys" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1q5pg0ms6szz6b5h26h4k40zb76zbwwjgyigac4wly9qngdj4yl5"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-gcc" ,rust-gcc)
+        ("rust-libc" ,rust-libc))))
+    (home-page "https://github.com/reem/rust-pico-sys")
+    (synopsis "Bindings to the PicoHTTPParser")
+    (description
+     "This package provides bindings to the PicoHTTPParser.")
+    (license license:expat)))
+
 (define-public rust-pin-utils
   (package
     (name "rust-pin-utils")
@@ -1234,7 +2117,7 @@ algorithm.")
        (("rust-lazy-static" ,rust-lazy-static))))
     (inputs
      `(("pkg-config" ,pkg-config)))
-    (home-page "https://github.com/alexcrichton/pkg-config-rs")
+    (home-page "https://github.com/rust-lang/pkg-config-rs")
     (synopsis "Library to run the pkg-config system tool")
     (description
      "A library to run the pkg-config system tool at build time in order to be
@@ -1340,7 +2223,7 @@ for x86.")
             "0nd71fl24sys066jrha6j7i34nfkjv44yzw8yww9742wmc8j0gfg"))))
     (build-system cargo-build-system)
     (arguments
-      `(#:cargo-inputs (("rust-unicode-xid" ,rust-unicode-xid))
+      `(#:cargo-inputs (("rust-unicode-xid" ,rust-unicode-xid-0.1))
         #:cargo-development-inputs (("rust-quote" ,rust-quote))))
     (home-page "https://github.com/alexcrichton/proc-macro2")
     (synopsis "Stable implementation of the upcoming new `proc_macro` API")
@@ -1363,7 +2246,7 @@ in terms of the upstream unstable API.")
          (base32
           "1w6kgwwv7p7zr0yyg5rb315lkk24bimywklwx7fsvsbwi10bjx4j"))))
     (build-system cargo-build-system)
-    (home-page "http://github.com/tailhook/quick-error")
+    (home-page "https://github.com/tailhook/quick-error")
     (synopsis "Macro which makes error types pleasant to write")
     (description "This crate provides a macro which makes error types pleasant
 to write.")
@@ -1392,6 +2275,50 @@ to write.")
     ;; Dual licensed.
     (license (list license:asl2.0 license:expat))))
 
+(define-public rust-rand
+  (package
+    (name "rust-rand")
+    (version "0.4.3")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "rand" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1gfgnqfj2pyh27dcb720jpawskllwnbvxh816ddyykv269xz8ml3"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-fuchsia-zircon" ,rust-fuchsia-zircon)
+        ("rust-libc" ,rust-libc)
+        ("rust-winapi" ,rust-winapi))))
+    (home-page "https://crates.io/crates/rand")
+    (synopsis "Random number generators and other randomness functionality")
+    (description
+     "Rand provides utilities to generate random numbers, to convert them to
+useful types and distributions, and some randomness-related algorithms.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-rand-0.3
+  (package
+    (inherit rust-rand)
+    (name "rust-rand")
+    (version "0.3.23")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "rand" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0v679h38pjjqj5h4md7v2slsvj6686qgcn7p9fbw3h43iwnk1b34"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc)
+        ("rust-rand" ,rust-rand))))))
+
 (define-public rust-rawpointer
   (package
     (name "rust-rawpointer")
@@ -1413,6 +2340,28 @@ and @code{ptrdistance}.")
     (license (list license:asl2.0
                    license:expat))))
 
+;; This package requires features which are unavailable
+;; on the stable releases of Rust.
+(define-public rust-redox-syscall ; guix upstreamable
+  (package
+    (name "rust-redox-syscall")
+    (version "0.1.56")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "redox_syscall" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "110y7dyfm2vci4x5vk7gr0q551dvp31npl99fnsx2fb17wzwcf94"))))
+    (build-system cargo-build-system)
+    (home-page "https://gitlab.redox-os.org/redox-os/syscall")
+    (synopsis "Rust library to access raw Redox system calls")
+    (description "This package provides a Rust library to access raw Redox
+system calls.")
+    (properties '((hidden? . #t)))
+    (license license:expat)))
+
 (define-public rust-regex-syntax
   (package
     (name "rust-regex-syntax")
@@ -1460,7 +2409,7 @@ and @code{ptrdistance}.")
            ;; The test phase expects there to be a README.md in the root directory.
            (lambda _
              (invoke "touch" "README.md"))))))
-    (home-page "https://github.com/XAMPPRocky/remove_dir_all.git")
+    (home-page "https://github.com/XAMPPRocky/remove_dir_all")
     (synopsis "Implementation of remove_dir_all for Windows")
     (description
      "This package provides a safe, reliable implementation of
@@ -1493,6 +2442,58 @@ and @code{ptrdistance}.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-rustc-demangle
+  (package
+    (name "rust-rustc-demangle")
+    (version "0.1.16")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "rustc-demangle" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "10qp42sl1wrdbgbbh8rnay2grm976z7hqgz32c4y09l1c071qsac"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-compiler-builtins"
+         ,rust-compiler-builtins)
+        ("rust-rustc-std-workspace-core"
+         ,rust-rustc-std-workspace-core))))
+    (home-page "https://github.com/alexcrichton/rustc-demangle")
+    (synopsis "Rust compiler symbol demangling")
+    (description
+     "This package demanges the symbols from the Rust compiler.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-rustc-serialize
+  (package
+    (name "rust-rustc-serialize")
+    (version "0.3.24")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "rustc-serialize" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1nkg3vasg7nk80ffkazizgiyv3hb1l9g3d8h17cajbkx538jiwfw"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-rand" ,rust-rand-0.3))))
+    (home-page "https://github.com/rust-lang-deprecated/rustc-serialize")
+    (synopsis "Generic serialization/deserialization support")
+    (description
+     "This package provides generic serialization/deserialization support
+corresponding to the @code{derive(RustcEncodable, RustcDecodable)} mode in the
+compiler.  Also includes support for hex, base64, and json encoding and
+decoding.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-rustc-std-workspace-core
   (package
     (name "rust-rustc-std-workspace-core")
@@ -1581,6 +2582,34 @@ paths point to the same file.")
 server functionality.")
     (license license:expat)))
 
+(define-public rust-scoped-threadpool
+  (package
+    (name "rust-scoped-threadpool")
+    (version "0.1.9")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "scoped_threadpool" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1a26d3lk40s9mrf4imhbik7caahmw2jryhhb6vqv6fplbbgzal8x"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-lazy-static" ,rust-lazy-static))))
+    (home-page "https://github.com/Kimundi/scoped-threadpool-rs")
+    (synopsis "library for scoped and cached threadpools")
+    (description
+     "This crate provides a stable, safe and scoped threadpool.  It can be used
+to execute a number of short-lived jobs in parallel without the need to respawn
+the underlying threads.  Jobs are runnable by borrowing the pool for a given
+scope, during which an arbitrary number of them can be executed. These jobs can
+access data of any lifetime outside of the pools scope, which allows working on
+non-'static references in parallel.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-scoped-tls
   (package
     (name "rust-scoped-tls")
@@ -1697,6 +2726,20 @@ with one of the implemented strategies.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-semver-parser-0.7
+  (package
+    (inherit rust-semver-parser)
+    (name "rust-semver-parser")
+    (version "0.7.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "semver-parser" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "18vhypw6zgccnrlm5ps1pwa0khz7ry927iznpr88b87cagr1v2iq"))))))
+
 (define-public rust-shlex
   (package
     (name "rust-shlex")
@@ -1736,6 +2779,60 @@ words, like Python's shlex.")
 data type.")
     (license license:expat)))
 
+(define-public rust-socket2
+  (package
+    (name "rust-socket2")
+    (version "0.3.11")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "socket2" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "11bdcz04i106g4q7swkll0qxrb4287srqd2k3aq2q6i22zjlvdz8"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cfg-if" ,rust-cfg-if)
+        ("rust-libc" ,rust-libc)
+        ("rust-redox-syscall" ,rust-redox-syscall)
+        ("rust-winapi" ,rust-winapi))
+       #:cargo-development-inputs
+       (("rust-tempdir" ,rust-tempdir))
+       #:tests? #f)) ; Tests expect network connectivity.
+    (home-page "https://github.com/alexcrichton/socket2-rs")
+    (synopsis "Networking sockets in Rust")
+    (description
+     "This package provides utilities for handling networking sockets with a
+maximal amount of configuration possible intended.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-sourcefile
+  (package
+    (name "rust-sourcefile")
+    (version "0.1.4")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "sourcefile" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1lwa6973zs4bgj29my7agfjgk4nw9hp6j7dfnr13nid85fw7rxsb"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-tempfile" ,rust-tempfile))))
+    (home-page "https://github.com/derekdreery/sourcefile-rs")
+    (synopsis "Concatenate source from multiple files")
+    (description
+     "A library for concatenating source from multiple files, whilst keeping
+track of where each new file and line starts.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-spin
   (package
     (name "rust-spin")
@@ -1749,7 +2846,7 @@ data type.")
          (base32
           "0m9clchsj0rf13bggsgvbv9haiy0f6rhvnvkpvkk8720a5pkydj4"))))
     (build-system cargo-build-system)
-    (home-page "https://github.com/mvdnes/spin-rs.git")
+    (home-page "https://github.com/mvdnes/spin-rs")
     (synopsis "Synchronization primitives based on spinning")
     (description "This crate provides synchronization primitives based on
 spinning.  They may contain data, are usable without @code{std},and static
@@ -1780,6 +2877,33 @@ to the same address.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-stacker
+  (package
+    (name "rust-stacker")
+    (version "0.1.5")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "stacker" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0js0axz5nla1mkr2dm2vrv9rj964ng1lrv4l43sqlnfgawplhygv"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cfg-if" ,rust-cfg-if)
+        ("rust-libc" ,rust-libc)
+        ("rust-winapi" ,rust-winapi)
+        ("rust-cc" ,rust-cc))))
+    (home-page "https://github.com/rust-lang/stacker")
+    (synopsis "Manual segmented stacks for Rust")
+    (description
+     "This package provides a stack growth library useful when implementing
+deeply recursive algorithms that may accidentally blow the stack.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-stdweb-internal-runtime
   (package
     (name "rust-stdweb-internal-runtime")
@@ -1886,6 +3010,92 @@ and Jaro-Winkler.")
      "This package provides helper test traits for synstructure doctests.")
     (license license:expat)))
 
+(define-public rust-tar
+  (package
+    (name "rust-tar")
+    (version "0.4.26")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "tar" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1lr6v3cpkfxd2lk5ll2jd8wr1xdskwj35smnh5sfb8xvzzxnn6dk"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-filetime" ,rust-filetime)
+        ("rust-libc" ,rust-libc)
+        ("rust-redox-syscall" ,rust-redox-syscall)
+        ("rust-xattr" ,rust-xattr))
+       #:cargo-development-inputs
+       (("rust-tempdir" ,rust-tempdir))
+       #:tests? #f)) ; Test archives are not distributed in the crate tarball.
+    (home-page "https://github.com/alexcrichton/tar-rs")
+    (synopsis "Tar file reading/writing for Rust")
+    (description
+     "This package provides a Rust implementation of a TAR file reader and
+writer.  This library does not currently handle compression, but it is abstract
+over all I/O readers and writers.  Additionally, great lengths are taken to
+ensure that the entire contents are never required to be entirely resident in
+memory all at once.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-tempdir
+  (package
+    (name "rust-tempdir")
+    (version "0.3.7")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "tempdir" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1n5n86zxpgd85y0mswrp5cfdisizq2rv3la906g6ipyc03xvbwhm"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-rand" ,rust-rand)
+        ("rust-remove-dir-all" ,rust-remove-dir-all))))
+    (home-page "https://github.com/rust-lang-deprecated/tempdir")
+    (synopsis "Temporary directory management for Rust")
+    (description
+     "This package provides a library for managing a temporary directory and
+deleting all contents when it's dropped.")
+    (license (list license:asl2.0
+                   license:expat))))
+
+(define-public rust-tempfile
+  (package
+    (name "rust-tempfile")
+    (version "3.0.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "tempfile" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0ny1cdbcsrmwjpy4k9366xm6p0jqkrmrvr0cln2djxspp1inyxs7"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc)
+        ("rust-rand" ,rust-rand)
+        ("rust-redox-syscall" ,rust-redox-syscall)
+        ("rust-remove-dir-all" ,rust-remove-dir-all)
+        ("rust-winapi" ,rust-winapi))))
+    (home-page "http://stebalien.com/projects/tempfile-rs")
+    (synopsis "Library for managing temporary files and directories")
+    (description
+     "This package provides a library for managing temporary files and
+directories.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-termcolor
   (package
     (name "rust-termcolor")
@@ -1933,6 +3143,32 @@ bindings are a small wrapper around the raw C functions, which converts integer
 return values to @code{std::io::Result} to indicate success or failure.")
     (license license:expat)))
 
+(define-public rust-thread-id
+  (package
+    (name "rust-thread-id")
+    (version "3.3.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "thread-id" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1h90v19fjz3x9b25ywh68z5yf2zsmm6h5zb4rl302ckbsp4z9yy7"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc)
+        ("rust-redox-syscall" ,rust-redox-syscall)
+        ("rust-winapi" ,rust-winapi))))
+    (home-page "https://github.com/ruuda/thread-id")
+    (synopsis "Get a unique ID for the current thread in Rust")
+    (description
+     "For diagnostics and debugging it can often be useful to get an ID that is
+different for every thread.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-thread-local
   (package
     (name "rust-thread-local")
@@ -1979,6 +3215,37 @@ fixed set of worker threads.")
     (license (list license:asl2.0
                    license:expat))))
 
+(define-public rust-time
+  (package
+    (name "rust-time")
+    (version "0.1.39")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "time" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "161hqx0gw722ikydanpahky447vaxqncwmkj66rny282vzqpalx1"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc)
+        ("rust-redox-syscall" ,rust-redox-syscall)
+        ("rust-rustc-serialize" ,rust-rustc-serialize)
+        ("rust-winapi" ,rust-winapi))
+       #:cargo-development-inputs
+       (("rust-log" ,rust-log)
+        ("rust-winapi" ,rust-winapi))
+       #:tests? #f)) ; Tests have difficulty with the timezones.
+    (home-page "https://github.com/rust-lang-deprecated/time")
+    (synopsis "Simple time handling in Rust")
+    (description
+     "This package provides utilities for working with time-related functions
+in Rust.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-tokio-mock-task
   (package
     (name "rust-tokio-mock-task")
@@ -2035,7 +3302,7 @@ fixed set of worker threads.")
          (base32
           "0yb0n8822mr59j200fyr2fxgzzgqljyxflx9y8bdy3rlaqngilgg"))))
     (build-system cargo-build-system)
-    (home-page "https://github.com/reem/rust-traitobject.git")
+    (home-page "https://github.com/reem/rust-traitobject")
     (synopsis "Unsafe helpers for dealing with raw trait objects")
     (description "Unsafe helpers for dealing with raw trait objects.")
     (license (list license:asl2.0
@@ -2232,7 +3499,7 @@ with the Unicode character database.")
 (define-public rust-unicode-xid
   (package
     (name "rust-unicode-xid")
-    (version "0.1.0")
+    (version "0.2.0")
     (source
       (origin
         (method url-fetch)
@@ -2240,8 +3507,8 @@ with the Unicode character database.")
         (file-name
           (string-append name "-" version ".tar.gz"))
         (sha256
-          (base32
-            "1z57lqh4s18rr4x0j4fw4fmp9hf9346h0kmdgqsqx0fhjr3k0wpw"))))
+         (base32
+          "0z09fn515xm7zyr0mmdyxa9mx2f7azcpv74pqmg611iralwpcvl2"))))
     (build-system cargo-build-system)
     (home-page
       "https://github.com/unicode-rs/unicode-xid")
@@ -2251,6 +3518,20 @@ or XID_Continue properties according to Unicode Standard Annex #31.")
     ;; Dual licensed.
     (license (list license:asl2.0 license:expat))))
 
+(define-public rust-unicode-xid-0.1
+  (package
+    (inherit rust-unicode-xid)
+    (name "rust-unicode-xid")
+    (version "0.1.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "unicode-xid" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1z57lqh4s18rr4x0j4fw4fmp9hf9346h0kmdgqsqx0fhjr3k0wpw"))))))
+
 (define-public rust-unindent
   (package
     (name "rust-unindent")
@@ -2313,6 +3594,32 @@ whitespace from a string.")
 untrusted inputs in Rust.")
     (license license:isc)))
 
+(define-public rust-vcpkg
+  (package
+    (name "rust-vcpkg")
+    (version "0.2.7")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "vcpkg" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "15dzk1b96q946v9aisbd1bbhi33n93wvgziwh1shmscn1xflbp9k"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-lazy-static" ,rust-lazy-static)
+        ("rust-tempdir" ,rust-tempdir))
+       #:tests? #f)) ; tests try to link libmysql, graphite2, harfbuzz
+    (home-page "https://github.com/mcgoo/vcpkg-rs")
+    (synopsis "Find native dependencies in a vcpkg tree at build time")
+    (description
+     "This package provides a library to find native dependencies in a
+@code{vcpkg} tree at build time in order to be used in Cargo build scripts.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-version-check
   (package
     (name "rust-version-check")
@@ -2364,7 +3671,7 @@ If that fails, no determination is made, and calls return None.")
          (base32
           "0zc8f0ksxvmhvgx4fdg0zyn6vdnbxd2xv9hfx4nhzg6kbs4f80ka"))))
     (build-system cargo-build-system)
-    (home-page "https://github.com/reem/rust-void.git")
+    (home-page "https://github.com/reem/rust-void")
     (synopsis "Void type for use in statically impossible cases")
     (description
      "The uninhabited void type for use in statically impossible cases.")
@@ -2698,6 +4005,33 @@ color in a Windows console.")
      "Contains function definitions for the Windows API library ws2_32.")
     (license license:expat)))
 
+(define-public rust-xattr
+  (package
+    (name "rust-xattr")
+    (version "0.2.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "xattr" version))
+        (file-name (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0k556fb6f5jc907975j9c8iynl2fqz3rf0w6fiig83i4yi0kfk14"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc))
+       #:cargo-development-inputs
+       (("rust-tempfile" ,rust-tempfile))
+       #:tests? #f)) ; Tests assume read access to /var.
+    (home-page "https://github.com/Stebalien/xattr")
+    (synopsis "Unix extended filesystem attributes")
+    (description
+     "This package provide a small library for setting, getting, and listing
+extended attributes.")
+    (license (list license:asl2.0
+                   license:expat))))
+
 (define-public rust-xdg
   (package
     (name "rust-xdg")
diff --git a/gnu/packages/cups.scm b/gnu/packages/cups.scm
index 22b87460ab..4be1eee156 100644
--- a/gnu/packages/cups.scm
+++ b/gnu/packages/cups.scm
@@ -5,7 +5,7 @@
 ;;; Copyright © 2016 Danny Milosavljevic <dannym@scratchpost.org>
 ;;; Copyright © 2017 Leo Famulari <leo@famulari.name>
 ;;; Copyright © 2017 Mark H Weaver <mhw@netris.org>
-;;; Copyright © 2017, 2018 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2017, 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -48,6 +48,7 @@
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system python)
   #:use-module (guix download)
+  #:use-module (guix svn-download)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix packages)
   #:use-module (guix utils)
@@ -418,14 +419,14 @@ should only be used as part of the Guix cups-pk-helper service.")
 (define-public hplip
   (package
     (name "hplip")
-    (version "3.18.9")
+    (version "3.19.8")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://sourceforge/hplip/hplip/" version
                                   "/hplip-" version ".tar.gz"))
               (sha256
                (base32
-                "0g3q5mm2crjyc1z4z6gv4lam6sc5d3diz704djrnpqadk4q3h290"))
+                "0cmshi5dkmc1n5yiahhp0cv5p94zg61018piiqa2sna10ahgx1d3"))
               (modules '((guix build utils)))
               (patches (search-patches "hplip-remove-imageprocessor.patch"))
               (snippet
@@ -438,10 +439,6 @@ should only be used as part of the Guix cups-pk-helper service.")
                                           (elf-file? file))))
                   (delete-file "prnt/hpcups/ImageProcessor.h")
 
-                  ;; Fix type mismatch.
-                  (substitute* "prnt/hpcups/genPCLm.cpp"
-                    (("boolean") "bool"))
-
                   ;; Install binaries under libexec/hplip instead of
                   ;; share/hplip; that'll at least ensure they get stripped.
                   ;; It's not even clear that they're of any use though...
@@ -740,6 +737,66 @@ language.")
     (home-page "http://download.ebz.epson.net/dsc/search/01/search")
     (license license:gpl2+)))
 
+(define-public splix
+  ;; The last release was in 2009.  The SVN repository contains 5 years of
+  ;; unreleased bug fixes and support for newer printer models.
+  (let ((revision 315))
+    (package
+      (name "splix")
+      (version (string-append "2.0.0-" (number->string revision)))
+      (source
+       (origin
+         (method svn-fetch)
+         (uri (svn-reference
+               (url "https://svn.code.sf.net/p/splix/code/splix/")
+               (revision revision)))
+         (file-name (string-append name "-" version "-checkout"))
+         (sha256
+          (base32 "16wbm4xnz35ca3mw2iggf5f4jaxpyna718ia190ka6y4ah932jxl"))))
+      (build-system gnu-build-system)
+      ;; 90% (3.8 MiB) of output are .ppd files.  Don't install them by default:
+      ;; CUPS has been able to read the .drv sources directly since version 1.2.
+      (outputs (list "out" "ppd"))
+      (arguments
+       '(#:make-flags
+         (list (string-append "CUPSDRV="
+                              (assoc-ref %outputs "out") "/share/cups/drv")
+               (string-append "CUPSFILTER="
+                              (assoc-ref %outputs "out") "/lib/cups/filter")
+               (string-append "CUPSPPD="
+                              (assoc-ref %outputs "ppd") "/share/cups/model")
+               "CACHESIZE=100"          ; pages in RAM, ±300 KiB each
+               "THREADS=4")             ; compress and print faster
+         #:phases
+         (modify-phases %standard-phases
+           (delete 'configure)          ; no configure script
+           (add-before 'build 'build-.drv-files
+             (lambda* (#:key make-flags #:allow-other-keys)
+               (apply invoke "make" "drv" make-flags)))
+           (add-after 'install 'install-.drv-files
+             (lambda* (#:key make-flags #:allow-other-keys)
+               (apply invoke "make" "install" "DRV_ONLY=1" make-flags))))
+         #:tests? #f))                  ; no test suite
+      (inputs
+       `(("cups" ,cups-minimal)
+         ("zlib" ,zlib)
+
+         ;; This dependency can be dropped by setting DISABLE_JBIG=1, but the
+         ;; result will not support some printers like the Samsung CLP-600.
+         ("jbigkit" ,jbigkit)))
+      (synopsis "QPDL (SPL2) printer driver")
+      (description
+       "SpliX is a set of CUPS drivers for printers that speak @acronym{QPDL,
+Quick Page Description Language}, also called @acronym{SPL2, Samsung Printer
+Language version 2}.  These include many laser printers sold by Samsung,
+Xerox, Lexmark, Toshiba, and Dell.
+
+Colour printers need colour profile files to get better results.  These
+@file{cms} files are provided by the printer's manufacturer and must be
+obtained and installed separately.")
+      (home-page "http://splix.ap2c.org/")
+      (license license:gpl2))))
+
 (define-public python-pycups
   (package
     (name "python-pycups")
diff --git a/gnu/packages/databases.scm b/gnu/packages/databases.scm
index a15ac62b8f..9cc424573c 100644
--- a/gnu/packages/databases.scm
+++ b/gnu/packages/databases.scm
@@ -1264,14 +1264,14 @@ changes.")
 (define-public tdb
   (package
     (name "tdb")
-    (version "1.4.0")
+    (version "1.4.2")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://www.samba.org/ftp/tdb/tdb-"
                                   version ".tar.gz"))
               (sha256
                (base32
-                "0d9d2f1c83gmmq30bkfs50yb8399mr9xjjzscma4kyq0ajf75861"))))
+                "0jh0iqbb6pkvqrqn033w5g6gwa4bdgkvp49z0qpkk3h2wk6b4h4h"))))
     (build-system gnu-build-system)
     (arguments
      '(#:phases
diff --git a/gnu/packages/dictionaries.scm b/gnu/packages/dictionaries.scm
index 228a8b6472..ba22fecf20 100644
--- a/gnu/packages/dictionaries.scm
+++ b/gnu/packages/dictionaries.scm
@@ -218,7 +218,7 @@ It comes with a German-English dictionary with approximately 270,000 entries.")
 (define-public grammalecte
   (package
     (name "grammalecte")
-    (version "1.2.1")
+    (version "1.3.0")
     (source
      (origin
        (method url-fetch/zipbomb)
@@ -226,7 +226,7 @@ It comes with a German-English dictionary with approximately 270,000 entries.")
                            "Grammalecte-fr-v" version ".zip"))
        (sha256
         (base32
-         "1j2avdk8hcgcv0lahp029qzpdb2rnys38hc64jy30awzx64fa6i4"))))
+         "1knysfdd1rx4vc5cmmnry4jsza0cdjy26fv505m854yfmq6zrckd"))))
     (build-system python-build-system)
     (home-page "https://grammalecte.net")
     (synopsis  "French spelling and grammar checker")
diff --git a/gnu/packages/docker.scm b/gnu/packages/docker.scm
index 94cfa2bdb7..28eff0a56c 100644
--- a/gnu/packages/docker.scm
+++ b/gnu/packages/docker.scm
@@ -25,6 +25,7 @@
   #:use-module (guix packages)
   #:use-module (guix download)
   #:use-module (guix git-download)
+  #:use-module (guix build-system cmake)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system go)
   #:use-module (guix build-system python)
@@ -368,7 +369,16 @@ built-in registry server of Docker.")
                (("StockRuntimeName = .*")
                 (string-append "StockRuntimeName = \""
                                (assoc-ref inputs "runc")
-                               "/sbin/runc\"\n")))
+                               "/sbin/runc\"\n"))
+               (("DefaultInitBinary = .*")
+                (string-append "DefaultInitBinary = \""
+                               (assoc-ref inputs "tini")
+                               "/bin/tini\"\n")))
+             (substitute* "daemon/config/config_common_unix_test.go"
+               (("expectedInitPath: \"docker-init\"")
+                (string-append "expectedInitPath: \""
+                               (assoc-ref inputs "tini")
+                               "/bin/tini\"")))
              (substitute* "vendor/github.com/moby/buildkit/executor/runcexecutor/executor.go"
                (("var defaultCommandCandidates = .*")
                 (string-append "var defaultCommandCandidates = []string{\""
@@ -541,6 +551,7 @@ built-in registry server of Docker.")
        ("runc" ,runc)
        ("util-linux" ,util-linux)
        ("lvm2" ,lvm2)
+       ("tini" ,tini)
        ("xfsprogs" ,xfsprogs)
        ("xz" ,xz)))
     (native-inputs
@@ -655,3 +666,36 @@ provisioning etc.")
 way to run commands in the current directory, but within a Docker container
 defined in a per-project configuration file.")
     (license license:gpl3+)))
+
+(define-public tini
+  (package
+    (name "tini")
+    (version "0.18.0")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/krallin/tini.git")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1h20i3wwlbd8x4jr2gz68hgklh0lb0jj7y5xk1wvr8y58fip1rdn"))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:tests? #f                    ;tests require a Docker daemon
+       #:phases (modify-phases %standard-phases
+                  (add-after 'unpack 'disable-static-build
+                    ;; Disable the static build as it fails to install, with
+                    ;; the error: "No valid ELF RPATH or RUNPATH entry exists
+                    ;; in the file".
+                    (lambda _
+                      (substitute* "CMakeLists.txt"
+                        ((".*tini-static.*") ""))
+                      #t)))))
+    (home-page "https://github.com/krallin/tini")
+    (synopsis "Tiny but valid init for containers")
+    (description "Tini is an init program specifically designed for use with
+containers.  It manages a single child process and ensures that any zombie
+processes produced from it are reaped and that signals are properly forwarded.
+Tini is integrated with Docker.")
+    (license license:expat)))
diff --git a/gnu/packages/education.scm b/gnu/packages/education.scm
index 58214747e7..1ca2b95c19 100644
--- a/gnu/packages/education.scm
+++ b/gnu/packages/education.scm
@@ -251,7 +251,7 @@ easy.")
 (define-public snap
   (package
     (name "snap")
-    (version "5.0.8")
+    (version "5.1.0")
     (source
      (origin
        (method git-fetch)
@@ -261,7 +261,7 @@ easy.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "0fwfssdgv3mfzyv8hw1a1z5ky1yn0p59kyl6l9fxsm4w2ckgyizd"))))
+         "11fqbbvrv4zqbdz176ahczb2d797inq5n7zg74335d96m377si3f"))))
     (build-system trivial-build-system)
     (arguments
      `(#:modules ((guix build utils))
diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index 06043dcdd3..e3c23ef945 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -137,7 +137,7 @@
   #:use-module (gnu packages sqlite)
   #:use-module (gnu packages gnupg)
   #:use-module (gnu packages video)
-  #:use-module (gnu packages haskell)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages wordnet)
   #:use-module (guix utils)
   #:use-module (srfi srfi-1)
@@ -2855,7 +2855,7 @@ mode-line.")
 (define-public emacs-robe
   (package
     (name "emacs-robe")
-    (version "0.8.1")
+    (version "0.8.2")
     (source
      (origin
        (method git-fetch)
@@ -2864,7 +2864,7 @@ mode-line.")
              (commit version)))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "0ll7ivxqnglfb0i70ly6qq2yfw9cyi3vq3lmj4s6h6c1c7rm3gcq"))))
+        (base32 "0qw18wi54yg971n4wnjqkd8lqj5lbs9ra8bvmngif2bzhqlfdsbn"))))
     (build-system emacs-build-system)
     (arguments
      '(#:include (cons "^lib\\/" %default-include)))
@@ -3091,7 +3091,10 @@ for Flow files.")
         (base32
          "0lybadq66bl4snkwph9i1y0qxln29wyfjn222ii3nfwany28cj66"))))
     (build-system emacs-build-system)
-    (arguments '(#:include '("\\.el$" "\\.org$")))
+    (arguments
+     `(#:include '("\\.el$" "\\.org$")
+       #:tests? #t
+       #:test-command '("make" "test")))
     (home-page "https://github.com/xuchunyang/elisp-demos/")
     (synopsis "Enhance @code{*Help*} buffers with additional examples")
     (description
@@ -3126,11 +3129,10 @@ completion of relevant keywords.")
 
 (define-public emacs-sudo-edit
   (let ((commit "cc3d478937b1accd38742bfceba92af02ee9357d")
-        (version "0.1.0")
         (revision "6"))
     (package
       (name "emacs-sudo-edit")
-      (version (git-version version revision commit))
+      (version (git-version "0.1.0" revision commit))
       (source
        (origin
          (method git-fetch)
@@ -3142,6 +3144,18 @@ completion of relevant keywords.")
           (base32
            "1qv58x5j5a3v1s2ylhck1ykbfclq0mbi0gsvaql3nyv8cxazqlwl"))))
       (build-system emacs-build-system)
+      (native-inputs
+       `(("emacs-undercover" ,emacs-undercover)))
+      (arguments
+       `(#:phases
+         (modify-phases %standard-phases
+           (add-before 'check 'fix-makefile
+             (lambda _
+               (substitute* "Makefile"
+                 (("\\$\\(CASK\\) exec ") ""))
+               #t)))
+         #:tests? #t
+         #:test-command '("make" "test")))
       (home-page "https://github.com/nflath/sudo-edit/")
       (synopsis "Open files as another user")
       (description
@@ -4229,24 +4243,50 @@ number.")
     (license license:gpl3+)))
 
 (define-public emacs-org-pomodoro
-  (package
-    (name "emacs-org-pomodoro")
-    (version "2.1.0")
-    (source
-     (origin
-       (method git-fetch)
-       (uri (git-reference
-             (url "https://github.com/lolownia/org-pomodoro.git")
-             (commit version)))
-       (file-name (git-file-name name version))
-       (sha256
-        (base32 "0r5shgikm34d66i2hblyknbblpg92lb2zc9x4bcb28xkh7m9d0xv"))))
-    (build-system emacs-build-system)
-    (propagated-inputs
-     `(("emacs-alert" ,emacs-alert)))
-    (home-page "https://github.com/lolownia/org-pomodoro")
-    (synopsis "Pomodoro technique for org-mode")
-    (description "@code{emacs-org-pomodoro} adds very basic support for
+  ;; Last release version was from 2016.
+  (let ((commit "aa07c11318f91219336197e62c47bc7a3d090479")
+        (revision "1"))
+    (package
+      (name "emacs-org-pomodoro")
+      (version (git-version "2.1.0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/marcinkoziej/org-pomodoro.git")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "0nbprh2nhnmb7ngp9ndr6zr37ashcsvpi5slv7a37x1dl7j6w1k4"))))
+      (build-system emacs-build-system)
+      (propagated-inputs
+       `(("emacs-alert" ,emacs-alert)))
+      (arguments
+       `(#:include (cons "^resources\\/" %default-include)
+         #:tests? #t
+         #:test-command '("emacs" "--batch"
+                          "-l" "org-pomodoro-tests.el"
+                          "-f" "ert-run-tests-batch-and-exit")
+         #:phases
+         (modify-phases %standard-phases
+           (add-before 'check 'make-tests-writable
+             (lambda _
+               (make-file-writable "org-pomodoro-tests.el")
+               #t))
+           (add-before 'check 'add-require
+             (lambda _
+               (emacs-batch-edit-file "org-pomodoro-tests.el"
+                 `(progn (progn (goto-char (point-min))
+                                (re-search-forward
+                                 "ert-deftest")
+                                (beginning-of-line)
+                                (forward-line -1)
+                                (insert "(require 'org-pomodoro)"))
+                         (basic-save-buffer)))
+               #t)))))
+      (home-page "https://github.com/marcinkoziej/org-pomodoro")
+      (synopsis "Pomodoro technique for org-mode")
+      (description "@code{emacs-org-pomodoro} adds very basic support for
 Pomodoro technique in Emacs org-mode.
 
 Run @code{M-x org-pomodoro} for the task at point or select one of the
@@ -4254,10 +4294,10 @@ last tasks that you clocked time for.  Each clocked-in pomodoro starts
 a timer of 25 minutes and after each pomodoro a break timer of 5
 minutes is started automatically.  Every 4 breaks a long break is
 started with 20 minutes.  All values are customizable.")
-    (license license:gpl3+)))
+      (license license:gpl3+))))
 
 (define-public emacs-org-sidebar
-  (let ((commit "74ca98b9920f3de3f13d49866581435e1ec63ec5")
+  (let ((commit "ed951d1e0d8b7e65ed35797403fd3e8c88f507f5")
         (revision "1"))
     (package
       (name "emacs-org-sidebar")
@@ -4270,7 +4310,7 @@ started with 20 minutes.  All values are customizable.")
                (commit commit)))
          (file-name (git-file-name name version))
          (sha256
-          (base32 "03p1ndyw2qp2skib5hszc4xyh84w7p2mhkd4a9dy6qv8q47xpsqn"))))
+          (base32 "01sf8v53pjsy80fzwmj2n8rp2z5gsnpyld0fm6j3bdv213clp69y"))))
       (build-system emacs-build-system)
       (propagated-inputs
        `(("emacs-dash" ,emacs-dash)
@@ -4316,6 +4356,30 @@ overview of tasks in a subtree.")
 organizer.")
     (license license:gpl3+)))
 
+(define-public emacs-org-tanglesync
+  (let ((commit "ab76a3eaaed263677d2e029d43f6c4de8fc21418")
+        (revision "1"))
+    (package
+      (name "emacs-org-tanglesync")
+      (version (git-version "0.6" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/mtekman/org-tanglesync.el.git")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "14ify3yirq2qmi9isk8kcbwx8pbclv1fyg49kraz4srhgf2fssgf"))))
+      (build-system emacs-build-system)
+      (propagated-inputs
+       `(("emacs-org" ,emacs-org)))
+      (home-page "https://github.com/mtekman/org-tanglesync.el")
+      (synopsis "Sync Org source blocks with tangled external files")
+      (description "This package automatically pulls changes from source code
+to their corresponding tangled blocks.")
+      (license license:gpl3+))))
+
 (define-public emacs-company-flow
   (let ((commit "76ef585c70d2a3206c2eadf24ba61e59124c3a16")
         (revision "1"))
@@ -4429,6 +4493,32 @@ variants.")
 package provides a light and a dark variant.")
     (license license:gpl3+)))
 
+(define-public emacs-poet-theme
+  (let ((commit "d84f7b259cc9b6ff8d442cf4c38bd6c7065ff8f4")
+        (revision "0"))
+    (package
+      (name "emacs-poet-theme")
+      (version (git-version "0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/kunalb/poet.git")
+               (commit commit)))
+         (sha256
+          (base32
+           "0a84jdaj619mb59a46dmkk2sfs42rylqk9ryl1drgs8d3lia79mz"))))
+      (build-system emacs-build-system)
+      (home-page "https://github.com/kunalb/poet/")
+      (synopsis "Emacs theme for prose")
+      (description
+       "Emacs has very good support for multiple fonts in a single file.  Poet
+uses this support to make it much more convenient to write prose within Emacs,
+with particular attention paid to @code{org-mode} and @code{markdown-mode}.
+Code blocks, tables, etc are formatted in monospace text with the appropriate
+backgrounds.")
+      (license license:expat))))
+
 (define-public emacs-ahungry-theme
   (package
     (name "emacs-ahungry-theme")
@@ -6292,6 +6382,31 @@ not tied in the trap of backward compatibility.")
 for search-based navigation of buffers.")
     (license license:gpl2+)))
 
+(define-public emacs-helm-ag
+  (let ((commit "2fc02c4ead29bf0db06fd70740cc7c364cb650ac")
+        (revision "1"))
+    (package
+      (name "emacs-helm-ag")
+      (version "0.58")
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/syohex/emacs-helm-ag.git")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "1gnn0byywbld6afcq1vp92cjvy4wlag9d1wgymnqn86c3b1bcf21"))))
+      (build-system emacs-build-system)
+      (propagated-inputs
+       `(("emacs-helm" ,emacs-helm)))
+      (home-page "https://github.com/syohex/emacs-helm-ag")
+      (synopsis "Helm interface to the Silver Searcher")
+      (description
+       "This package provides a frontend for grepping tools like ag and ack,
+as well as features for editing search results.")
+      (license license:gpl3+))))
+
 (define-public emacs-helm-projectile
   (package
     (name "emacs-helm-projectile")
@@ -6316,6 +6431,86 @@ for search-based navigation of buffers.")
      "This Emacs library provides a Helm interface for Projectile.")
     (license license:gpl3+)))
 
+(define-public emacs-taskrunner
+  (let ((commit "3afd4a546d42339543d3d4e51b175fc3e82b3358")
+        (revision "1"))
+    (package
+      (name "emacs-taskrunner")
+      (version (git-version "0.6" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/emacs-taskrunner/emacs-taskrunner.git")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "1lkdvmjn3alhqxq2i64sdr977sbw3g0b2670d9bwyzi67qh0jxrv"))))
+      (build-system emacs-build-system)
+      (propagated-inputs
+       `(("emacs-async" ,emacs-async)
+         ("emacs-projectile" ,emacs-projectile)))
+      (home-page "https://github.com/emacs-taskrunner/emacs-taskrunner")
+      (synopsis "Retrieve tasks from various build systems and task-runners")
+      (description "This package parses Makefiles and build-system files for
+multiple project types.")
+      (license license:gpl3+))))
+
+(define-public emacs-ivy-taskrunner
+  (let ((commit "75d8d67cfe3c29663fe0f5508a887adf40ed5162")
+        (revision "1"))
+    (package
+      (name "emacs-ivy-taskrunner")
+      (version (git-version "0.9" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/emacs-taskrunner/ivy-taskrunner.git")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "1wf4s4k0ap21f7g5w6128an8nsvbja7f5n889vcml5b6gjz058db"))))
+      (build-system emacs-build-system)
+      (propagated-inputs
+       `(("emacs-ivy" ,emacs-ivy)
+         ("emacs-taskrunner" ,emacs-taskrunner)
+         ("emacs-projectile" ,emacs-projectile)))
+      (home-page "https://github.com/emacs-taskrunner/ivy-taskrunner")
+      (synopsis "Retrieve build-system tasks using Ivy")
+      (description "This package provides an Ivy interface for selecting
+Makefile targets.")
+      (license license:gpl3+))))
+
+(define-public emacs-helm-taskrunner
+  (let ((commit "1910dac19cbc7bd4fd08b0faf9affd455339fbea")
+        (revision "1"))
+    (package
+      (name "emacs-helm-taskrunner")
+      (version (git-version "0.9" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/emacs-taskrunner/helm-taskrunner.git")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "182lmr858fx6rdhp1fy7kv8dvrhzcnxzwfck1q22s6xs8x85d5q7"))))
+      (build-system emacs-build-system)
+      (propagated-inputs
+       `(("emacs-helm" ,emacs-helm)
+         ("emacs-taskrunner" ,emacs-taskrunner)
+         ("emacs-projectile" ,emacs-projectile)))
+      (home-page "https://github.com/emacs-taskrunner/helm-taskrunner")
+      (synopsis "Retrieve build-system tasks using Helm")
+      (description "This package provides a Helm interface for selecting
+Makefile targets.")
+      (license license:gpl3+))))
+
 (define-public emacs-helm-make
   (let ((commit "feae8df22bc4b20705ea08ac9adfc2b43bb348d0")
         (revision "1"))
@@ -6501,11 +6696,11 @@ extensions.")
     (license license:gpl3+)))
 
 (define-public emacs-evil-collection
-  (let ((commit "0748c695dfa89b79eb316da5060360de8c0f04da")
-        (revision "9"))
+  (let ((commit "986ca7eb0b75eccd843bdad2f7fdb48f4ca6ac22")
+        (revision "10"))
     (package
       (name "emacs-evil-collection")
-      (version (git-version "0.0.1" revision commit))
+      (version (git-version "0.0.2" revision commit))
       (source (origin
                 (method git-fetch)
                 (uri (git-reference
@@ -6514,7 +6709,7 @@ extensions.")
                 (file-name (git-file-name name version))
                 (sha256
                  (base32
-                  "17w8nh3q7ffc7776f3qzixk0c0g6vys3xybgw16ky1f416585kvb"))))
+                  "172sx5w50x5wrs5w0sb6rkbj3q22s7mmsnk4c6pwknhbz3vwlvwz"))))
       (build-system emacs-build-system)
       (propagated-inputs
        `(("emacs-evil" ,emacs-evil)))
@@ -6581,8 +6776,8 @@ end of a line and increment or decrement it.")
       (license license:gpl3+))))
 
 (define-public emacs-evil-owl
-  (let ((commit "e8fe5b2f745e36db04cb71eb689bf91c5409614f")
-        (revision "2"))
+  (let ((commit "24c5f43df375194386344e69bc720ea3986c9510")
+        (revision "3"))
     (package
       (name "emacs-evil-owl")
       (version (git-version "0.0.1" revision commit))
@@ -6595,10 +6790,13 @@ end of a line and increment or decrement it.")
          (file-name (git-file-name name version))
          (sha256
           (base32
-           "1g7kplna62f271135mnjdbvxk2ayx7m4gvd6l86d2394alx16nhq"))))
+           "0bqzch14whlmrcasakah3psrzswvkzd7mmi8hx5s64kfp29wbdhi"))))
       (build-system emacs-build-system)
       (propagated-inputs
        `(("emacs-evil" ,emacs-evil)))
+      (arguments
+       `(#:tests? #t
+         #:test-command '("make" "test")))
       (home-page "https://github.com/mamapanda/evil-owl")
       (synopsis "Preview candidates when using Evil registers and marks")
       (description
@@ -6625,6 +6823,17 @@ a popup window for previewing candidates.")
            "0bjpn4yqig17ddym6wqq5fm1b294q74hzcbj9a6gs97fqiwf88xa"))))
       (build-system emacs-build-system)
       (propagated-inputs `(("emacs-evil" ,emacs-evil)))
+      (native-inputs `(("emacs-ert-runner" ,emacs-ert-runner)))
+      (arguments
+       `(#:phases
+         (modify-phases %standard-phases
+           (add-before 'check 'fix-makefile
+             (lambda _
+               (substitute* "Makefile"
+                 (("cask exec ") ""))
+               #t)))
+         #:tests? #t
+         #:test-command '("make" "test")))
       (home-page "https://github.com/Dewdrops/evil-exchange")
       (synopsis "Exchange text easily within Evil")
       (description
@@ -6754,6 +6963,9 @@ aligning text objects based on separators.")
            "0872ix682hkdz0k8pn6sb54rqkx00rz5fxpd5j2snx406yagpaxz"))))
       (build-system emacs-build-system)
       (propagated-inputs `(("emacs-evil" ,emacs-evil)))
+      (arguments
+       `(#:tests? #t
+         #:test-command '("make" "test")))
       (home-page "https://github.com/edkolev/evil-expat")
       (synopsis "Extra @code{ex} commands for @code{evil-mode}")
       (description
@@ -6924,14 +7136,14 @@ passive voice.")
     (name "emacs-org")
     ;; emacs-org-contrib inherits from this package.  Please update its sha256
     ;; checksum as well.
-    (version "9.2.5")
+    (version "9.2.6")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://elpa.gnu.org/packages/org-"
                                   version ".tar"))
               (sha256
                (base32
-                "1pid1sykgz83i4ry5n8f270finag6sm7ckqxn5lkikyya43wlzx1"))))
+                "0ikd78k4yw4sm5x7l3dsbvfcmvnv5qna2mxirr560gvcnzhr0zg4"))))
     (build-system emacs-build-system)
     (home-page "https://orgmode.org/")
     (synopsis "Outline-based notes management and organizer")
@@ -6945,14 +7157,14 @@ programming and reproducible research.")
   (package
     (inherit emacs-org)
     (name "emacs-org-contrib")
-    (version "20190805")
+    (version "20190904")
     (source (origin
               (method url-fetch)
-              (uri (string-append "https://orgmode.org/elpa/org-plus-contrib-"
-                                  version ".tar"))
+              (uri (string-append "https://orgmode.org/elpa/"
+                                  "org-plus-contrib-" version ".tar"))
               (sha256
                (base32
-                "1mw91hwbqyjq5pyz9hzdhvjlc2bphqpi23yqd3sdk1crpc87s40c"))))
+                "08s3fk3jim0y2v00l6ah8y08ba8wbcf29z6fxqzyaxj58a5sq81a"))))
     (arguments
      `(#:modules ((guix build emacs-build-system)
                   (guix build utils)
@@ -9503,6 +9715,75 @@ subsequent invocations can be readily customized.  Several recipes are
 included by default, and more can be readily added.")
       (license license:gpl3+))))
 
+(define-public emacs-unidecode
+  (let ((commit "5502ada9287b4012eabb879f12f5b0a9df52c5b7")
+        (revision "1"))
+    (package
+      (name "emacs-unidecode")
+      (version (git-version "0.2" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/sindikat/unidecode")
+               (commit commit)))
+         (sha256
+          (base32
+           "03x3nakbhmakwm977mwrf8jifvjnfwzpjv6wrwpizbqjnkgfchmn"))))
+      (build-system emacs-build-system)
+      (arguments
+       `(#:include (cons* "^tools/" "^data/" %default-include)
+         #:tests? #t
+         #:test-command '("emacs" "--batch"
+                          "-l" "unidecode-test.el"
+                          "-f" "ert-run-tests-batch-and-exit")
+         #:phases
+         (modify-phases %standard-phases
+           (add-before 'check 'make-tests-writable
+             (lambda _
+               (make-file-writable "unidecode-test.el")
+               #t))
+           (add-before 'check 'add-require
+             (lambda _
+               (emacs-batch-edit-file "unidecode-test.el"
+                 `(progn (progn (goto-char (point-min))
+                                (re-search-forward
+                                 "ert-deftest")
+                                (forward-line -1)
+                                (insert "(require 'unidecode)"))
+                         (basic-save-buffer)))
+               #t)))))
+      (home-page "https://github.com/sindikat/unidecode")
+      (synopsis "Transliterate Unicode text to ASCII")
+      (description "This package provides functions for converting Unicode to ASCII.")
+      (license license:gpl2+))))
+
+(define-public emacs-pubmed
+  (package
+    (name "emacs-pubmed")
+    (version "0.2.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://gitlab.com/fvdbeek/emacs-pubmed.git")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "15bwjxc7g43m5pi8z17anaqqkvi209r7kk1chmf175477gvrv7c0"))))
+    (build-system emacs-build-system)
+    (propagated-inputs
+     `(("emacs-deferred" ,emacs-deferred)
+       ("emacs-esxml" ,emacs-esxml)
+       ("emacs-s" ,emacs-s)
+       ("emacs-unidecode" ,emacs-unidecode)))
+    (home-page "https://gitlab.com/fvdbeek/emacs-pubmed")
+    (synopsis "Interface to PubMed")
+    (description "This package provides an Emacs interface to the PubMed
+database of references on life sciences.")
+    (license license:gpl3+)))
+
 (define-public emacs-websocket
   (package
     (name "emacs-websocket")
@@ -11008,10 +11289,73 @@ into sections while preserving the structure imposed by any timestamps.")
 tables of contents.")
     (license license:gpl3+)))
 
+(define-public emacs-ts
+  (let ((commit "93c074f2895a204e003e8c7f3033c37d6486fac8")
+        (revision "1"))
+    (package
+      (name "emacs-ts")
+      (version (git-version "0.1" revision commit))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/alphapapa/ts.el")
+                      (commit commit)))
+                (sha256
+                 (base32
+                  "0lpyv78k04vbp9glnv14dawcfgi3m49847wlgwfmkdq5cr3fn735"))
+                (file-name (git-file-name name version))))
+      (build-system emacs-build-system)
+      (propagated-inputs
+       `(("emacs-s" ,emacs-s)
+         ("emacs-dash" ,emacs-dash)))
+      (arguments
+       ;; XXX: Three tests are failing because of a timezone-related issue
+       ;; with how they're written.  On my machine, all the failing test
+       ;; results are 18000 seconds (5 hours) off.
+
+       ;; The ts-parse-org function accepts a string without any timezone
+       ;; info, not assumed to be in Unix time, and converts it to a so-called
+       ;; ts struct.  The ts-unix function (accessor) accepts a ts struct,
+       ;; then seems to assume the struct's corresponding time is in terms of
+       ;; the user's current time zone, before returning a Unix time in
+       ;; seconds.
+
+       ;; The failing tests all have similar problems, but nothing else about
+       ;; the library seems particularly off.
+
+       `(#:tests? #t
+         #:test-command '("emacs" "--batch"
+                          "-l" "test/test.el"
+                          "-f" "ert-run-tests-batch-and-exit")
+         #:phases
+         (modify-phases %standard-phases
+           (add-before 'check 'make-tests-writable
+             (lambda _
+               (make-file-writable "test/test.el")
+               #t))
+           (add-before 'check 'delete-failing-tests
+             (lambda _
+               (emacs-batch-edit-file "test/test.el"
+                 `(progn (progn
+                          (goto-char (point-min))
+                          (dolist (test-regexp '("ert-deftest ts-format"
+                                                 "ert-deftest ts-parse-org\\_>"
+                                                 "ert-deftest ts-parse-org-element"))
+                                  (re-search-forward test-regexp)
+                                  (beginning-of-line)
+                                  (kill-sexp)))
+                         (basic-save-buffer)))
+               #t)))))
+      (home-page "https://github.com/alphapapa/ts.el")
+      (synopsis "Timestamp and date/time library")
+      (description "This package facilitates manipulating dates, times, and
+timestamps by providing a @code{ts} struct.")
+      (license license:gpl3+))))
+
 (define-public emacs-org-ql
   (package
     (name "emacs-org-ql")
-    (version "0.1")
+    (version "0.2")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -11019,12 +11363,19 @@ tables of contents.")
                     (commit version)))
               (sha256
                (base32
-                "1nvzirn1lmgmgl7irbsc1n391a2cw8gmvwm3pa228l2c1gcx8kd8"))
+                "0mq0aj0a3a5gi9nz0ncpzsh731d92n86b0iinvx1m45dcal06h9y"))
               (file-name (git-file-name name version))))
     (build-system emacs-build-system)
     (propagated-inputs
      `(("emacs-s" ,emacs-s)
+       ("emacs-ts" ,emacs-ts)
+       ("emacs-org" ,emacs-org)
        ("emacs-dash" ,emacs-dash)))
+    (native-inputs
+     `(("emacs-buttercup" ,emacs-buttercup)))
+    (arguments
+     `(#:tests? #t
+       #:test-command '("buttercup" "-L" ".")))
     (home-page "https://github.com/alphapapa/org-ql/")
     (synopsis "Query language for Org buffers")
     (description "This package provides a Lispy query language for Org
@@ -11906,12 +12257,11 @@ key again.")
     (license license:gpl3+)))
 
 (define-public emacs-mbsync
-  (let ((commit "42077e83ae2db778ce0f8e22f8357b40355526b3")
-        (revision "1"))
+  (let ((commit "f549eccde6033449d24cd5b6148599484850c403")
+        (revision "2"))
     (package
       (name "emacs-mbsync")
-      (version (string-append "0.0.1" "-" revision "."
-                              (string-take commit 7)))
+      (version (git-version "0.1.2" revision commit))
       (source
        (origin
          (method git-fetch)
@@ -11921,7 +12271,7 @@ key again.")
          (file-name (git-file-name name version))
          (sha256
           (base32
-           "0yj93y2mpxlir8x73znlg1slxlv4blm1vjv5h2w3j8lxg8bxvmn6"))))
+           "1pdj41rq3pq4jdb5pma5j495xj7w7jgn8pnz1z1zwg75pn7ydfp0"))))
       (build-system emacs-build-system)
       (home-page "https://github.com/dimitri/mbsync-el")
       (synopsis "Interface to mbsync for Emacs")
@@ -13530,28 +13880,31 @@ be changed by customizing the appropriate variables.")
     (license license:gpl3+)))
 
 (define-public emacs-org-caldav
-  (package
-    (name "emacs-org-caldav")
-    (version "20180403")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://github.com/dengste/org-caldav/raw/"
-             "8d3492c27a09f437d2d94f2736c56d7652e87aa0"
-             "/org-caldav.el"))
-       (sha256
-        (base32
-         "1fh4gh68ddj0is99z2ccyh97v6psnyda61n2dsadzqhcxn51amlc"))))
-    (build-system emacs-build-system)
-    (propagated-inputs `(("emacs-org" ,emacs-org)))
-    (home-page "https://github.com/dengste/org-caldav")
-    (synopsis
-     "Sync Org files with external calendars via the CalDAV protocol")
-    (description
-     "Synchronize between events in Org-mode files and a CalDAV calendar.
-This code is still alpha.")
-    (license license:gpl3+)))
+  (let ((commit "a563500c9884f38ce08793e2964f8274adde163d"))
+    (package
+      (name "emacs-org-caldav")
+      (version (git-version "0.0.0" "1" commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/dengste/org-caldav.git")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "18qi1iv5dc0gsvkv9ifal3cjpm568nlb907v8a53cnm4439x1l0l"))))
+      (build-system emacs-build-system)
+      (arguments
+       ;; Tests require to have two specific calendars on a test server.
+       `(#:exclude '("^org-caldav-testsuite\\.el")))
+      (propagated-inputs
+       `(("emacs-org" ,emacs-org)))
+      (home-page "https://github.com/dengste/org-caldav")
+      (synopsis "Sync Org files with external calendars via the CalDAV protocol")
+      (description "Synchronize between events in Org files and a CalDAV
+calendar.")
+      (license license:gpl3+))))
 
 (define-public emacs-zotxt
   (package
@@ -13632,6 +13985,18 @@ describing the key binding changes.")
     (propagated-inputs
      `(("emacs-evil" ,emacs-evil)
        ("emacs-iedit" ,emacs-iedit)))
+    (native-inputs
+     `(("emacs-ert-runner" ,emacs-ert-runner)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'check 'fix-makefile
+           (lambda _
+             (substitute* "Makefile"
+               (("@cask exec ") ""))
+             #t)))
+       #:tests? #t
+       #:test-command '("make" "test")))
     (home-page
      "https://github.com/hlissner/evil-multiedit")
     (synopsis "Multiple cursors for Evil mode")
@@ -13861,7 +14226,7 @@ try completing.  See @code{fish-completion-fallback-on-bash-p}.")
                  ("gif-screencast-cropping-program"
                   (string-append imagemagick "/bin/mogrify"))
                  ("gif-screencast-optimize-program"
-                  (string-append imagemagick "/bin/gifsicle")))))))))
+                  (string-append gifsicle "/bin/gifsicle")))))))))
       (home-page
        "https://gitlab.com/Ambrevar/emacs-gif-screencast")
       (synopsis "One-frame-per-action GIF recording")
@@ -15514,6 +15879,31 @@ buffers, etc.  It also has plug-ins to help your Emacs life.")
 programs can use this table component for the application UI.")
       (license license:gpl3+))))
 
+(define-public emacs-leetcode
+  (let ((commit "8624496af9e105c3e07d88844b37ede87540d604")
+        (revision "1"))
+    (package
+      (name "emacs-leetcode")
+      (version (git-version "0" "1" commit))
+      (home-page "https://github.com/ginqi7/leetcode-emacs.git")
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/ginqi7/leetcode-emacs")
+                      (commit commit)))
+                (sha256
+                 (base32
+                  "11pp7ydlmwrv7djf9mwk4xzn295xbmdnj5x13bfj5yjpjr89p531"))
+                (file-name (git-file-name name version))))
+      (build-system emacs-build-system)
+      (propagated-inputs
+       `(("emacs-names" ,emacs-names)
+         ("emacs-ctable" ,emacs-ctable)))
+      (synopsis "Solve and submit LeetCode problems from within Emacs")
+      (description "This package provides an Emacs interface to LeetCode
+allowing users to log in and solve problems of their choice using Emacs.")
+      (license license:unlicense))))
+
 (define-public emacs-epc
   (let ((commit "e1bfa5ca163273859336e3cc89b4b6460f7f8cda"))
     (package
@@ -15998,7 +16388,7 @@ the standard @code{Dockerfile} file format.")
 (define-public emacs-lsp-mode
   (package
     (name "emacs-lsp-mode")
-    (version "6.0")
+    (version "6.1")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -16007,12 +16397,13 @@ the standard @code{Dockerfile} file format.")
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "1v1mq6ixzlgiazj8fmg4xaqhsqn3l89iqy74yndhvzh2rdf0pbkl"))))
+                "0jn5slhv9zfs446a5966bfg9dq144g22v79wnkx9hxq7if78p652"))))
     (build-system emacs-build-system)
     (propagated-inputs
      `(("emacs-dash" ,emacs-dash)
        ("emacs-f" ,emacs-f)
        ("emacs-ht" ,emacs-ht)
+       ("emacs-markdown-mode" ,emacs-markdown-mode)
        ("emacs-spinner" ,emacs-spinner)))
     (home-page "https://github.com/emacs-lsp/lsp-mode")
     (synopsis "Emacs client and library for the Language Server Protocol")
@@ -16254,11 +16645,10 @@ unescaping of quotes.")
 
 (define-public emacs-flycheck-haskell
   (let ((commit "32ddff87165a7d3a35e7318bee997b5b4bd41278")
-        (version "0.8")
-        (revision "79"))
+        (revision "2"))
     (package
       (name "emacs-flycheck-haskell")
-      (version (git-version version revision commit))
+      (version (git-version "0.8" revision commit))
       (source
        (origin
          (method git-fetch)
@@ -16276,6 +16666,8 @@ unescaping of quotes.")
          ("emacs-flycheck" ,emacs-flycheck)
          ("emacs-haskell-mode" ,emacs-haskell-mode)
          ("emacs-let-alist" ,emacs-let-alist)))
+      (arguments
+       `(#:include '("\\.el$" "\\.hs$")))
       (home-page "https://github.com/flycheck/flycheck-haskell")
       (synopsis "Flycheck for Haskell")
       (description "This package configures syntax-checking for Haskell
@@ -17257,6 +17649,17 @@ corresponding Evil keys.")
       (build-system emacs-build-system)
       (propagated-inputs
        `(("emacs-evil" ,emacs-evil)))
+      (arguments
+       `(#:phases
+         (modify-phases %standard-phases
+           (add-after 'unpack 'set-shell
+             ;; Setting the SHELL environment variable is required for the tests
+             ;; to find sh.
+             (lambda _
+               (setenv "SHELL" (which "sh"))
+               #t)))
+         #:tests? #t
+         #:test-command '("make" "test")))
       (home-page "https://github.com/mamapanda/evil-traces")
       (synopsis "Visual hints for @code{evil-ex}")
       (description "This package adds visual hints to certain @code{ex}
diff --git a/gnu/packages/emacs.scm b/gnu/packages/emacs.scm
index e18db26821..5a3577350d 100644
--- a/gnu/packages/emacs.scm
+++ b/gnu/packages/emacs.scm
@@ -15,7 +15,7 @@
 ;;; Copyright © 2017 Jan Nieuwenhuizen <janneke@gnu.org>
 ;;; Copyright © 2018 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
-;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -68,14 +68,14 @@
 (define-public emacs
   (package
     (name "emacs")
-    (version "26.2")
+    (version "26.3")
     (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/emacs/emacs-"
                                  version ".tar.xz"))
              (sha256
               (base32
-               "13n5m60i47k96mpv5pp6km2ph9rv2m5lmbpzj929v02vpsfyc70m"))
+               "119ldpk7sgn9jlpyngv5y4z3i7bb8q3xp4p0qqi7i5nq39syd42d"))
              (patches (search-patches "emacs-exec-path.patch"
                                       "emacs-fix-scheme-indent-function.patch"
                                       "emacs-source-date-epoch.patch"))
@@ -114,7 +114,7 @@
                  #t))))
     (build-system glib-or-gtk-build-system)
     (arguments
-     `(#:tests? #f  ; no check target
+     `(#:tests? #f                      ; no check target
        #:configure-flags (list "--with-modules"
                                "--disable-build-details")
        #:phases
diff --git a/gnu/packages/emulators.scm b/gnu/packages/emulators.scm
index 89649748e8..75a2e245f6 100644
--- a/gnu/packages/emulators.scm
+++ b/gnu/packages/emulators.scm
@@ -119,8 +119,8 @@
 
 ;; Building from recent Git because the official 5.0 release no longer builds.
 (define-public dolphin-emu
-  (let ((commit "24718c1a389e4f51db974575cd15c372485b92e2")
-        (revision "6"))
+  (let ((commit "a9745400ec5cea7e55d94955afbdc44d1a4982d1")
+        (revision "7"))
     (package
       (name "dolphin-emu")
       (version (git-version "5.0" revision commit))
@@ -140,13 +140,13 @@
                            (string-append "Externals/" dir)))
                        '("LZO" "OpenAL" "Qt" "SFML" "curl" "ffmpeg"
                          "gettext" "hidapi" "libpng" "libusb" "mbedtls"
-                         "miniupnpc" "zlib"))
+                         "miniupnpc" "MoltenVK" "zlib"))
              ;; Clean up source.
              (for-each delete-file (find-files "." ".*\\.(bin|dsy|exe|jar|rar)$"))
              #t))
          (sha256
           (base32
-           "1d92rhnw307j3m6swk6bycb8fyc7vw2hfgakd5hpsc4qw65vxfq8"))))
+           "0ic08ii4vlqlmk2wkfc99jiy6nji2wfq56r7slj23wgvhznnaabk"))))
       (build-system cmake-build-system)
       (arguments
        '(#:tests? #f
@@ -169,7 +169,11 @@
                  (copy-file "font_western.bin" "../Data/Sys/GC/font_western.bin")
                  (chdir "..")
                  (substitute* "Source/Core/VideoBackends/Vulkan/VulkanLoader.cpp"
-                              (("libvulkan.so") libvulkan))
+                              (("\"vulkan\", 1") (string-append "\"vulkan\"")))
+                 (substitute* "Source/Core/VideoBackends/Vulkan/VulkanLoader.cpp"
+                              (("\"vulkan\"") (string-append "\"" libvulkan "\"")))
+                 (substitute* "Source/Core/VideoBackends/Vulkan/VulkanLoader.cpp"
+                              (("Common::DynamicLibrary::GetVersionedFilename") ""))
                  #t))))
 
          ;; The FindGTK2 cmake script only checks hardcoded directories for
@@ -1053,7 +1057,7 @@ emulation community.  It provides highly accurate emulation.")
              (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "0xxd9nhqiclpkdd9crymvba37fl0xs5mikwhya68nfzcgar7w480"))))
+        (base32 "0jwy5winrm87s6xa645fwa47x242r25m6i3rwf10x59448bd19r6"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f                      ; no tests
diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index a1f222bed4..7f5409c835 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -12,6 +12,7 @@
 ;;; Copyright © 2018, 2019 Arun Isaac <arunisaac@systemreboot.net>
 ;;; Copyright © 2019 Tim Stahel <swedneck@swedneck.xyz>
 ;;; Copyright © 2019 Jovany Leandro G.C <bit4bit@riseup.net>
+;;; Copyright © 2019 Steve Sprang <scs@stevesprang.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -1940,7 +1941,7 @@ simulator backends @code{Qucsator}, @code{ngspice} and @code{Xyce}.")
 (define-public librepcb
   (package
     (name "librepcb")
-    (version "0.1.1")
+    (version "0.1.2")
     (source
      (origin
        (method url-fetch)
@@ -1948,7 +1949,7 @@ simulator backends @code{Qucsator}, @code{ngspice} and @code{Xyce}.")
                            version "/librepcb-" version "-source.zip"))
        (sha256
         (base32
-         "08lm95kr5gqyqyy4hcii0micqa6ryhbv0harvdndmpvi4ix1ggi8"))))
+         "1xgk0r3nxdd2cy7d1k165d005gsngnz1v2wbwivacw7gis0i8ip7"))))
     (build-system gnu-build-system)
     (inputs
      `(("qtbase" ,qtbase)
@@ -2109,3 +2110,38 @@ while keeping the user experience at mind.  Cutter is created by reverse
 engineers for reverse engineers.")
     (license (list license:cc-by-sa3.0  ;the "Iconic" icon set
                    license:gpl3+))))    ;everything else
+
+(define-public lib3mf
+  (package
+    (name "lib3mf")
+    (version "1.8.1")
+    (source
+     (origin
+      (method git-fetch)
+      (uri (git-reference (url "https://github.com/3MFConsortium/lib3mf.git")
+                          (commit (string-append "v" version))))
+      (file-name (git-file-name name version))
+      (sha256
+       (base32
+        "11wpk6n9ga2p57h1dcrp37w77mii0r7r6mlrgmykf7rvii1rzgqd"))))
+    (build-system cmake-build-system)
+    (native-inputs
+     `(("googletest-source" ,(package-source googletest))))
+    (inputs
+     `(("libuuid" ,util-linux)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'unpack-googletest
+           (lambda* (#:key inputs #:allow-other-keys)
+             (copy-recursively (assoc-ref inputs "googletest-source")
+                               "UnitTests/googletest")
+             #t)))))
+    (synopsis "Implementation of the 3D Manufacturing Format (3MF) file standard")
+    (description
+     "Lib3MF is a C++ implementation of the 3D Manufacturing Format (3MF) file
+standard.  It offers a way to integrate 3MF reading and writing capabilities, as
+well as conversion and validation tools for input and output data.  The
+specification can be downloaded at @url{http://3mf.io/specification/}.")
+    (home-page "https://3mf.io/")
+    (license license:bsd-2)))
diff --git a/gnu/packages/enlightenment.scm b/gnu/packages/enlightenment.scm
index 5e62f5e3da..cc9f43e935 100644
--- a/gnu/packages/enlightenment.scm
+++ b/gnu/packages/enlightenment.scm
@@ -65,7 +65,7 @@
 (define-public efl
   (package
     (name "efl")
-    (version "1.22.3")
+    (version "1.22.4")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -73,7 +73,7 @@
                     version ".tar.xz"))
               (sha256
                (base32
-                "1j1i8cwq4ym9z34ikv35mdmv5q7q69hdp494mc6l03g9n6cl2yky"))))
+                "084ihxy6g86yczhln5vn1amxi4qzqhvk4lpz9005kx92i6wh4h25"))))
     (outputs '("out"       ; 53 MB
                "include")) ; 21 MB
     (build-system gnu-build-system)
diff --git a/gnu/packages/games.scm b/gnu/packages/games.scm
index 3dc3c72551..26170f1cad 100644
--- a/gnu/packages/games.scm
+++ b/gnu/packages/games.scm
@@ -112,6 +112,7 @@
   #:use-module (gnu packages guile)
   #:use-module (gnu packages haskell)
   #:use-module (gnu packages haskell-crypto)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages icu4c)
   #:use-module (gnu packages image)
   #:use-module (gnu packages imagemagick)
diff --git a/gnu/packages/ghostscript.scm b/gnu/packages/ghostscript.scm
index 3239ab4fd5..3b74a96966 100644
--- a/gnu/packages/ghostscript.scm
+++ b/gnu/packages/ghostscript.scm
@@ -275,7 +275,7 @@ output file formats and printers.")
     (home-page "https://www.ghostscript.com/")
     (license license:agpl3+)))
 
-(define-public ghostscript/fixed
+(define ghostscript/fixed
   ;; This adds the Freetype dependency (among other things), which fixes the
   ;; rendering issues described in <https://issues.guix.gnu.org/issue/34877>.
   (package/inherit
diff --git a/gnu/packages/gnome.scm b/gnu/packages/gnome.scm
index e37c2a4070..a2a5f98b76 100644
--- a/gnu/packages/gnome.scm
+++ b/gnu/packages/gnome.scm
@@ -2534,24 +2534,40 @@ and objects.")
 (define-public libxklavier
   (package
     (name "libxklavier")
-    (version "5.3")
+    (version "5.4")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "mirror://gnome/sources/" name "/"
-                                  version "/" name "-" version ".tar.xz"))
+              ;; Note: There's no tarball at ftp.gnome.org for this version.
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://anongit.freedesktop.org/git/libxklavier")
+                    (commit (string-append "libxklavier-" version))))
               (sha256
                (base32
-                "016lpdv35z0qsw1cprdc2k5qzkdi5waj6qmr0a2q6ljn9g2kpv7b"))))
+                "1w1x5mrgly2ldiw3q2r6y620zgd89gk7n90ja46775lhaswxzv7a"))
+              (file-name (git-file-name name version))))
     (build-system gnu-build-system)
     (arguments
-     '(#:configure-flags
+     '(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'no-configure
+           (lambda* _
+            (setenv "NOCONFIGURE" "1")
+            #t)))
+       #:configure-flags
        (list (string-append "--with-xkb-base="
                             (assoc-ref %build-inputs "xkeyboard-config")
-                            "/share/X11/xkb"))))
+                            "/share/X11/xkb")
+             "--disable-xmodmap-support")))
     (native-inputs
      `(("glib:bin"              ,glib "bin") ; for glib-mkenums, etc.
        ("gobject-introspection" ,gobject-introspection)
-       ("pkg-config"            ,pkg-config)))
+       ("pkg-config"            ,pkg-config)
+       ("gtk-doc" ,gtk-doc)
+       ("intltool" ,intltool)
+       ("which" ,which)
+       ("autoconf" ,autoconf)
+       ("automake" ,automake)
+       ("libtool" ,libtool)))
     (propagated-inputs
      ;; Required by libxklavier.pc.
      `(("glib"    ,glib)
@@ -4337,15 +4353,15 @@ work and the interface is well tested.")
 (define-public eolie
   (package
     (name "eolie")
-    (version "0.9.62")
+    (version "0.9.63")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://gitlab.gnome.org/World/eolie/"
-                                  "uploads/bb4aad19272cc636bd17f2f6602127fe/"
+                                  "uploads/d42b466752729a0d3fa828a721e25043/"
                                   "eolie-" version ".tar.xz"))
               (sha256
                (base32
-                "06v76hg87fnhw45dil5vvl20myvaa38n1jqsl0lmkkq6af4mk8wx"))))
+                "11pp8g0w22h1q0bbj9517l5838gcymvvp8fp9kh6h2dmgir2ssih"))))
     (build-system meson-build-system)
     (arguments
      `(#:glib-or-gtk? #t
@@ -8265,7 +8281,7 @@ advanced image management tool")
 (define-public libhandy
   (package
     (name "libhandy")
-    (version "0.0.10")
+    (version "0.0.11")
     (source
      (origin
        (method git-fetch)
@@ -8274,7 +8290,7 @@ advanced image management tool")
              (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "1702hbdqhfpgw0c4vj2ag08vgl83byiryrbngbq11b9azmj3jhzs"))))
+        (base32 "0622zp5wrvn5bvgardijxd11y76g1i54fs32y03dw9nrar7i6vb0"))))
     (build-system meson-build-system)
     (arguments
      `(#:configure-flags
@@ -8282,12 +8298,6 @@ advanced image management tool")
          "-Dgtk_doc=true")
        #:phases
        (modify-phases %standard-phases
-         (add-after 'unpack 'disable-broken-test
-           (lambda _
-             ;; This test fails for unknown reasons
-             (substitute* "tests/meson.build"
-               (("'test-dialog',") ""))
-             #t))
          (add-before 'check 'pre-check
            (lambda _
              ;; Tests require a running X server.
@@ -8303,7 +8313,10 @@ advanced image management tool")
        ("gtk-doc" ,gtk-doc)
        ("pkg-config" ,pkg-config)
        ("gettext" ,gettext-minimal)
-       ("xorg-server" ,xorg-server)))
+       ("xorg-server" ,xorg-server)
+
+       ;; Test suite dependencies.
+       ("hicolor-icon-theme" ,hicolor-icon-theme)))
     (home-page "https://source.puri.sm/Librem5/libhandy")
     (synopsis "Library full of GTK+ widgets for mobile phones")
     (description "The aim of the handy library is to help with developing user
diff --git a/gnu/packages/gnucash.scm b/gnu/packages/gnucash.scm
index 2196a8c50a..2ed1a890f7 100644
--- a/gnu/packages/gnucash.scm
+++ b/gnu/packages/gnucash.scm
@@ -3,7 +3,7 @@
 ;;; Copyright © 2015 Eric Bavier <bavier@member.fsf.org>
 ;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2017 Chris Marusich <cmmarusich@gmail.com>
-;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2017, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2019 Maxim Cournoyer <maxim.cournoyer@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -231,17 +231,14 @@ to be read using the GNOME Yelp program.")
 (define-public gwenhywfar
   (package
     (name "gwenhywfar")
-    (version "4.20.0")
+    (version "4.20.2")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "https://www.aquamaniac.de/sites/download/"
-                           "download.php?package=01&release=208&file=02&"
-                           "dummy=gwenhywfar-" version ".tar.gz"))
-       (file-name (string-append name "-" version ".tar.gz"))
+       (uri (string-append "https://www.aquamaniac.de/rdm/attachments/"
+                           "download/108/gwenhywfar-" version ".tar.gz"))
        (sha256
-        (base32
-         "1c0g3f8jk6j693774ifslx2ds4ksabgbbalhhm9gk20kpamxm22s"))))
+        (base32 "0w1j7ppr1247kr3bpn4dqwyxp6cl8mfgr0m4782iz8f8a4ixjkqg"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags
@@ -271,17 +268,14 @@ applications and libraries.  It is used by AqBanking.")
 (define-public aqbanking
   (package
     (name "aqbanking")
-    (version "5.7.8")
+    (version "5.8.1")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "https://www.aquamaniac.de/sites/download/"
-                           "download.php?package=03&release=217&file=02&"
-                           "dummy=aqbanking-" version ".tar.gz"))
-       (file-name (string-append name "-" version ".tar.gz"))
+       (uri (string-append "https://www.aquamaniac.de/rdm/attachments/"
+                           "download/105/aqbanking-" version ".tar.gz"))
        (sha256
-        (base32
-         "0s67mysskbiw1h1p0np4ph4351r7wq3nc873vylam7lsqi66xy0n"))))
+        (base32 "0m44n2hyxprxzq7ijkrd7rmhhl0r033s1k21ix9y67a0p9skl1mg"))))
     (build-system gnu-build-system)
     (arguments
      `(;; Parallel building fails because aqhbci is required before it's
diff --git a/gnu/packages/gnuzilla.scm b/gnu/packages/gnuzilla.scm
index 7bc29f91af..9ee9ca2f03 100644
--- a/gnu/packages/gnuzilla.scm
+++ b/gnu/packages/gnuzilla.scm
@@ -426,7 +426,7 @@ from forcing GEXP-PROMISE."
                       #:system system
                       #:guile-for-build guile)))
 
-(define %icecat-version "60.8.0-guix1")
+(define %icecat-version "60.9.0-guix1")
 
 ;; 'icecat-source' is a "computed" origin that generates an IceCat tarball
 ;; from the corresponding upstream Firefox ESR tarball, using the 'makeicecat'
@@ -448,7 +448,7 @@ from forcing GEXP-PROMISE."
                   "firefox-" upstream-firefox-version ".source.tar.xz"))
             (sha256
              (base32
-              "1gkz90clarbhgfxhq91s0is6lw6bfymyjb0xbyyswdg68kcqfcy1"))))
+              "0gy5x2rnnbkqmjd9sq93s3q5na9nkba68xwpizild7k6qn63qicz"))))
 
          (upstream-icecat-base-version "60.7.0") ; maybe older than base-version
          (upstream-icecat-gnu-version "1")
diff --git a/gnu/packages/golang.scm b/gnu/packages/golang.scm
index 20f5462528..b12fc4b4bd 100644
--- a/gnu/packages/golang.scm
+++ b/gnu/packages/golang.scm
@@ -3119,30 +3119,28 @@ as conversion to and from @command{net.Addr}.")
       (license license:expat))))
 
 (define-public go-github-com-urfave-cli
-  (let ((commit "693af58b4d51b8fcc7f9d89576da170765980581")
-        (revision "0"))
-    (package
-      (name "go-github-com-urfave-cli")
-      (version (git-version "1.20.0" revision commit))
-      (source
-       (origin
-         (method git-fetch)
-         (uri (git-reference
-               (url "https://github.com/urfave/cli.git")
-               (commit commit)))
-         (file-name (git-file-name name version))
-         (sha256
-          (base32
-           "1krq752xgy658an1696vf4dc2zmp541clwjinhn11394sx2qksh6"))))
-      (build-system go-build-system)
-      (arguments
-       '(#:import-path "github.com/urfave/cli"))
-      (home-page "https://github.com/urfave/cli")
-      (synopsis "Simple, fast, and fun package for building command line apps in Go")
-      (description "@command{cli} is a simple, fast, and fun package for
+  (package
+    (name "go-github-com-urfave-cli")
+    (version "1.21.0")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/urfave/cli.git")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "104jldhxn6d97l5vsbsl0q8hgy1bxrahbr6dbfqrlppva51jmydd"))))
+    (build-system go-build-system)
+    (arguments
+     '(#:import-path "github.com/urfave/cli"))
+    (home-page "https://github.com/urfave/cli")
+    (synopsis "Simple, fast, and fun package for building command line apps in Go")
+    (description "@command{cli} is a simple, fast, and fun package for
 building command line apps in Go.  The goal is to enable developers to write
 fast and distributable command line applications in an expressive way.")
-      (license license:expat))))
+    (license license:expat)))
 
 (define-public go-github-com-whyrusleeping-json-filter
   (let ((commit "ff25329a9528f01c5175414f16cc0a6a162a5b8b")
@@ -3660,3 +3658,27 @@ and aid debugging.")
     (description "This package provides a cron library for Go.  It implements
 a cron spec parser and job runner.")
     (license license:expat)))
+
+(define-public go-github-com-shirou-gopsutil
+  (let ((commit "47ef3260b6bf6ead847e7c8fc4101b33c365e399")
+        (revision "0"))
+    (package
+      (name "go-github-com-shirou-gopsutil")
+      (version (git-version "v2.19.7" revision commit))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                       (url "https://github.com/shirou/gopsutil")
+                       (commit commit))) ; XXX
+                (sha256
+                 (base32
+                  "0x1g4r32q4201nr2b754xnrrndmwsrhfr7zg37spya86qrmijnws"))))
+      (build-system go-build-system)
+      (arguments
+       '(#:import-path "github.com/shirou/gopsutil"))
+      (synopsis "Process and system monitoring in Go")
+      (description "This package provides a library for retrieving information
+on running processes and system utilization (CPU, memory, disks, network,
+sensors).")
+      (home-page "https://github.com/shirou/gopsutil")
+      (license license:bsd-3))))
diff --git a/gnu/packages/gps.scm b/gnu/packages/gps.scm
index 2d24a9ac22..26b1fe0ee2 100644
--- a/gnu/packages/gps.scm
+++ b/gnu/packages/gps.scm
@@ -143,7 +143,7 @@ between two other data points.")
 (define-public gama
   (package
     (name "gama")
-    (version "2.06")
+    (version "2.07")
     (source
       (origin
         (method url-fetch)
@@ -151,7 +151,7 @@ between two other data points.")
                             version ".tar.gz"))
         (sha256
          (base32
-          "06xp3kj099b6m2fsmgcbzgj7xk4j0drsps52m4fr8vc6fglsh44p"))))
+          "0nmc6mkd55nryfffq5k9c09dhkbq6bfs06af8ammhbh5jzdn3s36"))))
     (build-system gnu-build-system)
     (arguments '(#:parallel-tests? #f)) ; race condition
     (native-inputs
diff --git a/gnu/packages/graphics.scm b/gnu/packages/graphics.scm
index 10b4ad57ad..33abdd79a2 100644
--- a/gnu/packages/graphics.scm
+++ b/gnu/packages/graphics.scm
@@ -49,7 +49,7 @@
   #:use-module (gnu packages gnome)
   #:use-module (gnu packages graphviz)
   #:use-module (gnu packages gtk)
-  #:use-module (gnu packages haskell)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages image)
   #:use-module (gnu packages imagemagick)
   #:use-module (gnu packages jemalloc)
diff --git a/gnu/packages/guile-wm.scm b/gnu/packages/guile-wm.scm
index 2955c06a0d..622fc560d9 100644
--- a/gnu/packages/guile-wm.scm
+++ b/gnu/packages/guile-wm.scm
@@ -172,7 +172,9 @@ dependencies.")
                                     Type=Application~%"
                              ,name ,synopsis %output))))
                #t)))))
-      (native-inputs `(("pkg-config" ,pkg-config)
+      (native-inputs `(("guile" ,guile-2.2)
+                       ("guile-xcb" ,guile-xcb)
+                       ("pkg-config" ,pkg-config)
                        ("texinfo" ,texinfo)))
       (inputs `(("guile" ,guile-2.2)
                 ("guile-xcb" ,guile-xcb)))
diff --git a/gnu/packages/guile-xyz.scm b/gnu/packages/guile-xyz.scm
index 7dff0c6269..b765ef36e1 100644
--- a/gnu/packages/guile-xyz.scm
+++ b/gnu/packages/guile-xyz.scm
@@ -2266,21 +2266,20 @@ list of components.  This module takes care of that for you.")
 (define-public guile-gi
   (package
     (name "guile-gi")
-    (version "0.0.2")
+    (version "0.2.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "http://lonelycactus.com/tarball/guile_gi-"
                                   version ".tar.gz"))
               (sha256
                (base32
-                "0hs0viqzff7nzgcmyw721ima1jyymrlzrcycpgwrs6iprscxvqwn"))))
+                "1n4pbrmbrjkrx826a4m31ag5c35rgkj1sirqh4qalk7gg67cfb41"))))
     (build-system gnu-build-system)
     (arguments
-     `(#:configure-flags '("--with-gnu-filesystem-hierarchy")
-       ;; The atomic_int_set test does not actually fail.
-       #:make-flags '("XFAIL_TESTS=strjoinv.scm")))
+     `(#:configure-flags '("--with-gnu-filesystem-hierarchy")))
     (native-inputs
      `(("gettext" ,gnu-gettext)
+       ("glib:bin" ,glib "bin") ; for glib-compile-resources
        ("libtool" ,libtool)
        ("pkg-config" ,pkg-config)))
     (propagated-inputs
diff --git a/gnu/packages/haskell-apps.scm b/gnu/packages/haskell-apps.scm
index e77f6d113b..5cd6549c27 100644
--- a/gnu/packages/haskell-apps.scm
+++ b/gnu/packages/haskell-apps.scm
@@ -1,12 +1,16 @@
 ;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015 Siniša Biđin <sinisa@bidin.eu>
 ;;; Copyright © 2015, 2017, 2018 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2016, 2017, 2018 ng0 <ng0@n0.is>
+;;; Copyright © 2017 Danny Milosavljevic <dannym@scratchpost.org>
+;;; Copyright © 2017, 2018 Alex Vong <alexvong1995@gmail.com>
 ;;; Copyright © 2017, 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018 Timothy Sample <samplet@ngyro.com>
 ;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
 ;;; Copyright © 2016, 2017 Leo Famulari <leo@famulari.name>
 ;;; Copyright © 2015 Paul van der Walt <paul@denknerd.org>
 ;;; Copyright © 2019 Kyle Meyer <kyle@kyleam.com>
+;;; Copyright © 2015 John Soo <jsoo1@asu.edu>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -25,6 +29,7 @@
 
 (define-module (gnu packages haskell-apps)
   #:use-module (guix download)
+  #:use-module (guix git-download)
   #:use-module (guix packages)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix build-system haskell)
@@ -35,13 +40,110 @@
   #:use-module (gnu packages haskell-check)
   #:use-module (gnu packages haskell-crypto)
   #:use-module (gnu packages haskell-web)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages ncurses)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages rsync)
-  #:use-module (gnu packages sdl)
   #:use-module (gnu packages version-control))
 
+(define-public cabal-install
+ (package
+  (name "cabal-install")
+   (version "2.2.0.0")
+   (source
+    (origin
+     (method url-fetch)
+      (uri (string-append
+            "https://hackage.haskell.org/package/cabal-install/cabal-install-"
+            version
+            ".tar.gz"))
+      (sha256
+       (base32 "1nd3ch7qr4dpfxhgkcq2lnhvszx2kjgnn1kwb44vk9y5jgfs4mn8"))))
+   (arguments `(#:tests? #f)) ; FIXME: testing libraries are missing.
+   (build-system haskell-build-system)
+   (inputs
+    `(("ghc-async" ,ghc-async)
+      ("ghc-base16-bytestring" ,ghc-base16-bytestring)
+      ("ghc-cryptohash-sha256" ,ghc-cryptohash-sha256)
+      ("ghc-echo" ,ghc-echo)
+      ("ghc-edit-distance" ,ghc-edit-distance)
+      ("ghc-hackage-security" ,ghc-hackage-security)
+      ("ghc-hashable" ,ghc-hashable)
+      ("ghc-http" ,ghc-http)
+      ("ghc-network-uri" ,ghc-network-uri)
+      ("ghc-network" ,ghc-network)
+      ("ghc-random" ,ghc-random)
+      ("ghc-resolv" ,ghc-resolv)
+      ("ghc-tar" ,ghc-tar)
+      ("ghc-zlib" ,ghc-zlib)))
+   (home-page "https://www.haskell.org/cabal/")
+   (synopsis "Command-line interface for Cabal and Hackage")
+   (description
+    "The cabal command-line program simplifies the process of managing
+Haskell software by automating the fetching, configuration, compilation and
+installation of Haskell libraries and programs.")
+   (license license:bsd-3)))
+
+(define-public corrode
+  (let ((commit "b6699fb2fa552a07c6091276285a44133e5c9789"))
+    (package
+      (name "corrode")
+      (version (string-append "0.0.1-" (string-take commit 7)))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/jameysharp/corrode.git")
+               (commit "b6699fb2fa552a07c6091276285a44133e5c9789")))
+         (file-name
+          (string-append name "-" version "-checkout"))
+         (sha256
+          (base32 "02v0yyj6sk4gpg2222wzsdqjxn8w66scbnf6b20x0kbmc69qcz4r"))))
+      (build-system haskell-build-system)
+      (inputs
+       `(("ghc-language-c" ,ghc-language-c)
+         ("ghc-markdown-unlit" ,ghc-markdown-unlit)))
+      (home-page "https://github.com/jameysharp/corrode")
+      (synopsis "Automatic semantics-preserving translation from C to Rust")
+      (description
+       "This program reads a C source file and prints an equivalent module in
+Rust syntax.  It is intended to be useful for two different purposes:
+
+@enumerate
+@item Partial automation for migrating legacy code that was implemented in C.
+@item A new, complementary approach to static analysis for C programs.
+@end enumerate\n")
+      (license license:gpl2+))))
+
+(define-public cpphs
+  (package
+    (name "cpphs")
+    (version "1.20.8")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/" name "/"
+             name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1bh524asqhk9v1s0wvipl0hgn7l63iy3js867yv0z3h5v2kn8vg5"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-polyparse" ,ghc-polyparse)
+       ("ghc-old-locale" ,ghc-old-locale)
+       ("ghc-old-time" ,ghc-old-time)))
+    (home-page "http://projects.haskell.org/cpphs/")
+    (synopsis "Liberalised re-implementation of cpp, the C pre-processor")
+    (description "Cpphs is a re-implementation of the C pre-processor that is
+both more compatible with Haskell, and itself written in Haskell so that it
+can be distributed with compilers.  This version of the C pre-processor is
+pretty-much feature-complete and compatible with traditional (K&R)
+pre-processors.  Additional features include: a plain-text mode; an option to
+unlit literate code files; and an option to turn off macro-expansion.")
+    (license (list license:lgpl2.1+ license:gpl3+))))
+
 ;; Darcs has no https support: http://irclog.perlgeek.de/darcs/2016-09-17
 ;; http://darcs.net/manual/Configuring_darcs.html#SECTION00440070000000000000
 ;; and results of search engines will show that if the protocol is http, https
@@ -276,93 +378,116 @@ used to keep a folder in sync between computers.")
     (license (list license:gpl3+
                    license:agpl3+))))
 
-(define-public ghc-sdl2
+(define-public hlint
   (package
-    (name "ghc-sdl2")
-    (version "2.4.1.0")
+    (name "hlint")
+    (version "2.1.10")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "sdl2/sdl2-" version ".tar.gz"))
+       (uri (string-append
+             "https://hackage.haskell.org/package/" name
+             "/" name "-" version ".tar.gz"))
        (sha256
         (base32
-         "0p4b12fmxps0sbnkqdfy0qw19s355yrkw7fgw6xz53wzq706k991"))))
+         "19as2m9g75cr6n1agzvsij0cvqhb0wbjlk31w4y5d5mns87dki0w"))))
     (build-system haskell-build-system)
-    (arguments '(#:tests? #f)) ; tests require graphical environment
     (inputs
-     `(("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-linear" ,ghc-linear)
-       ("ghc-statevar" ,ghc-statevar)
+     `(("cpphs" ,cpphs)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-yaml" ,ghc-yaml)
        ("ghc-vector" ,ghc-vector)
-       ("sdl2" ,sdl2)))
-    (native-inputs
-     `(("ghc-weigh" ,ghc-weigh)
-       ("pkg-config" ,pkg-config)))
-    (home-page "http://hackage.haskell.org/package/sdl2")
-    (synopsis "High- and low-level bindings to the SDL library")
-    (description
-     "This package contains bindings to the SDL 2 library, in both high- and
-low-level forms.  The @code{SDL} namespace contains high-level bindings, where
-enumerations are split into sum types, and we perform automatic
-error-checking.  The @code{SDL.Raw} namespace contains an almost 1-1
-translation of the C API into Haskell FFI calls.  As such, this does not
-contain sum types nor error checking.  Thus this namespace is suitable for
-building your own abstraction over SDL, but is not recommended for day-to-day
-programming.")
+       ("ghc-data-default" ,ghc-data-default)
+       ("ghc-cmdargs" ,ghc-cmdargs)
+       ("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
+       ("ghc-haskell-src-exts-util" ,ghc-haskell-src-exts-util)
+       ("ghc-uniplate" ,ghc-uniplate)
+       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
+       ("ghc-extra" ,ghc-extra)
+       ("ghc-refact" ,ghc-refact)
+       ("ghc-aeson" ,ghc-aeson)
+       ("hscolour" ,hscolour)))
+    (home-page "http://community.haskell.org/~ndm/hlint/")
+    (synopsis "Suggest improvements for Haskell source code")
+    (description "HLint reads Haskell programs and suggests changes that
+hopefully make them easier to read.  HLint also makes it easy to disable
+unwanted suggestions, and to add your own custom suggestions.")
     (license license:bsd-3)))
 
-(define-public ghc-sdl2-mixer
+(define-public hoogle
   (package
-    (name "ghc-sdl2-mixer")
-    (version "1.1.0")
+    (name "hoogle")
+    (version "5.0.17.3")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/sdl2-mixer/"
-                           "sdl2-mixer-" version ".tar.gz"))
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/hoogle/hoogle-"
+         version ".tar.gz"))
        (sha256
         (base32
-         "1k8avyccq5l9z7bwxigim312yaancxl1sr3q6a96bcm7pnhiak0g"))))
+         "174gp41v0krzj37m75pnr3aawyhkbk2wq4q6zk2z3zh0avvvmgk6"))))
     (build-system haskell-build-system)
     (inputs
-     `(("ghc-data-default-class" ,ghc-data-default-class)
-       ("ghc-lifted-base" ,ghc-lifted-base)
-       ("ghc-monad-control" ,ghc-monad-control)
-       ("ghc-sdl2" ,ghc-sdl2)
+     `(("ghc-network-uri" ,ghc-network-uri)
+       ("ghc-network" ,ghc-network)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-aeson" ,ghc-aeson)
+       ("ghc-cmdargs" ,ghc-cmdargs)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-conduit-extra" ,ghc-conduit-extra)
+       ("ghc-connection" ,ghc-connection)
+       ("ghc-extra" ,ghc-extra)
+       ("ghc-old-locale" ,ghc-old-locale)
+       ("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
+       ("ghc-http-conduit" ,ghc-http-conduit)
+       ("ghc-http-types" ,ghc-http-types)
+       ("ghc-js-flot" ,ghc-js-flot)
+       ("ghc-js-jquery" ,ghc-js-jquery)
+       ("ghc-mmap" ,ghc-mmap)
+       ("ghc-process-extras" ,ghc-process-extras)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-storable-tuple" ,ghc-storable-tuple)
+       ("ghc-tar" ,ghc-tar)
+       ("ghc-uniplate" ,ghc-uniplate)
+       ("ghc-utf8-string" ,ghc-utf8-string)
        ("ghc-vector" ,ghc-vector)
-       ("sdl2-mixer" ,sdl2-mixer)))
-    (native-inputs
-     `(("pkg-config" ,pkg-config)))
-    (home-page "http://hackage.haskell.org/package/sdl2-mixer")
-    (synopsis "Bindings to SDL2 mixer")
-    (description "This package provides Haskell bindings to
-@code{SDL2_mixer}.")
+       ("ghc-wai" ,ghc-wai)
+       ("ghc-wai-logger" ,ghc-wai-logger)
+       ("ghc-warp" ,ghc-warp)
+       ("ghc-warp-tls" ,ghc-warp-tls)
+       ("ghc-zlib" ,ghc-zlib)))
+    (home-page "https://hoogle.haskell.org/")
+    (synopsis "Haskell API Search")
+    (description "Hoogle is a Haskell API search engine, which allows
+you to search many standard Haskell libraries by either function name,
+or by approximate type signature.")
     (license license:bsd-3)))
 
-(define-public ghc-sdl2-image
+(define-public hscolour
   (package
-    (name "ghc-sdl2-image")
-    (version "2.0.0")
+    (name "hscolour")
+    (version "1.24.4")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/sdl2-image/"
-                           "sdl2-image-" version ".tar.gz"))
+       (uri (string-append
+             "https://hackage.haskell.org/package/hscolour/hscolour-"
+             version
+             ".tar.gz"))
        (sha256
         (base32
-         "1pr6dkg73cy9z0w54lrkj9c5bhxj56nl92lxikjy8kz6nyr455rr"))))
+         "079jwph4bwllfp03yfr26s5zc6m6kw3nhb1cggrifh99haq34cr4"))))
     (build-system haskell-build-system)
-    (inputs
-     `(("ghc-sdl2" ,ghc-sdl2)
-       ("sdl2-image" ,sdl2-image)))
-    (native-inputs
-     `(("pkg-config" ,pkg-config)))
-    (home-page "http://hackage.haskell.org/package/sdl2-image")
-    (synopsis "Bindings to SDL2_image")
-    (description "This package provides Haskell bindings to
-@code{SDL2_image}.")
-    (license license:expat)))
+    (home-page "https://hackage.haskell.org/package/hscolour")
+    (synopsis "Script to colourise Haskell code")
+    (description "HSColour is a small Haskell script to colourise Haskell
+code.  It currently has six output formats: ANSI terminal codes (optionally
+XTerm-256colour codes), HTML 3.2 with font tags, HTML 4.01 with CSS, HTML 4.01
+with CSS and mouseover annotations, XHTML 1.0 with inline CSS styling, LaTeX,
+and mIRC chat codes.")
+    (license license:bsd-3)))
 
 (define-public raincat
   (package
@@ -405,3 +530,73 @@ play inspired from classics Lemmings and The Incredible Machine.  The project
 proved to be an excellent learning experience for the programmers.  Everything
 is programmed in Haskell.")
     (license license:bsd-3)))
+
+(define-public shellcheck
+  (package
+    (name "shellcheck")
+    (version "0.7.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/ShellCheck/ShellCheck-"
+             version ".tar.gz"))
+       (sha256
+        (base32 "1vx895cp5k5h0680xfwj74lk97m9y627n965x6srds0gfnbkzy9s"))
+       (file-name (string-append name "-" version ".tar.gz"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-diff" ,ghc-diff)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-regex-tdfa" ,ghc-regex-tdfa)))
+    (home-page "https://github.com/koalaman/shellcheck")
+    (synopsis "Static analysis for shell scripts")
+    (description "@code{shellcheck} provides static analysis for
+@command{bash} and @command{sh} shell scripts.
+It gives warnings and suggestions in order to:
+
+@enumerate
+@item Point out and clarify typical beginner's syntax issues that cause
+a shell to give cryptic error messages.
+@item Point out and clarify typical intermediate level semantic problems
+that cause a shell to behave strangely and counter-intuitively.
+@item Point out subtle caveats, corner cases and pitfalls that may cause an
+advanced user's otherwise working script to fail under future circumstances.
+@end enumerate")
+    (license license:gpl3+)))
+
+(define-public stylish-haskell
+  (package
+    (name "stylish-haskell")
+    (version "0.9.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "mirror://hackage/package/stylish-haskell/"
+         "stylish-haskell-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1zs624xqp6j8vrl6pfv18dm8vz8hvz25grri65ximxhcizgwhnax"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-file-embed" ,ghc-file-embed)
+       ("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-syb" ,ghc-syb)
+       ("ghc-yaml" ,ghc-yaml)
+       ("ghc-strict" ,ghc-strict)
+       ("ghc-optparse-applicative" ,ghc-optparse-applicative)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
+    (home-page "https://github.com/jaspervdj/stylish-haskell")
+    (synopsis "Haskell code prettifier")
+    (description
+     "A simple Haskell code prettifier.  The goal is not to format all of the
+code in a file, just clean up import statements and a few other tedious
+items.  This tool tries to help where necessary without getting in the way.")
+    (license license:bsd-3)))
diff --git a/gnu/packages/haskell-check.scm b/gnu/packages/haskell-check.scm
index 589eee74d9..e0951d489c 100644
--- a/gnu/packages/haskell-check.scm
+++ b/gnu/packages/haskell-check.scm
@@ -28,8 +28,8 @@
 
 (define-module (gnu packages haskell-check)
   #:use-module (gnu packages)
-  #:use-module (gnu packages haskell)
   #:use-module (gnu packages haskell-crypto)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (guix build-system haskell)
   #:use-module (guix download)
   #:use-module ((guix licenses) #:prefix license:)
@@ -837,3 +837,28 @@ of generated values by construction.
 To get started quickly, see the examples:
 @uref{https://github.com/hedgehogqa/haskell-hedgehog/tree/master/hedgehog-example}")
     (license license:bsd-3)))
+
+(define-public cabal-doctest
+  (package
+    (name "cabal-doctest")
+    (version "1.0.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "cabal-doctest/cabal-doctest-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0bgd4jdmzxq5y465r4sf4jv2ix73yvblnr4c9wyazazafddamjny"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("1" "1bk85avgc93yvcggwbk01fy8nvg6753wgmaanhkry0hz55h7mpld")))
+    (home-page "https://github.com/phadej/cabal-doctest")
+    (synopsis "Setup.hs helper for running doctests")
+    (description
+     "To properly work, the @code{doctest} package needs plenty of
+configuration.  This library provides the common bits for writing custom
+@file{Setup.hs} files.")
+    (license license:bsd-3)))
diff --git a/gnu/packages/haskell-web.scm b/gnu/packages/haskell-web.scm
index 7cbf8932e6..6f1c460eaa 100644
--- a/gnu/packages/haskell-web.scm
+++ b/gnu/packages/haskell-web.scm
@@ -6,6 +6,7 @@
 ;;; Copyright © 2017 rsiddharth <s@ricketyspace.net>
 ;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2019 Robert Vollmert <rob@vllmrt.net>
+;;; Copyright © 2019 John Soo <jsoo1@asu.edu>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -1463,3 +1464,56 @@ Together with the snap-core library upon which it depends, it provides a
 clean and efficient Haskell programming interface to the HTTP
 protocol.")
     (license license:bsd-3)))
+
+(define-public ghc-js-jquery
+  (package
+    (name "ghc-js-jquery")
+    (version "3.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/js-jquery/js-jquery-"
+         version ".tar.gz"))
+       (sha256
+        (base32
+         "16q68jzbs7kp07dnq8cprdcc8fd41rim38039vg0w4x11lgniq70"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f)) ; tests do network IO
+    (home-page "https://github.com/ndmitchell/js-jquery")
+    (synopsis "Obtain minified jQuery code")
+    (description "This package bundles the minified
+@url{http://jquery.com/, jQuery} code into a Haskell package, so it can
+be depended upon by Cabal packages.  The first three components of the
+version number match the upstream jQuery version.  The package is
+designed to meet the redistribution requirements of downstream
+users (e.g. Debian).")
+    (license license:expat)))
+
+(define-public ghc-js-flot
+  (package
+    (name "ghc-js-flot")
+    (version "0.8.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/js-flot/js-flot-"
+         version ".tar.gz"))
+       (sha256
+        (base32
+         "0yjyzqh3qzhy5h3nql1fckw0gcfb0f4wj9pm85nafpfqp2kg58hv"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-http" ,ghc-http)))
+    (home-page "https://github.com/ndmitchell/js-flot")
+    (synopsis "Obtain minified flot code")
+    (description "This package bundles the minified
+@url{http://www.flotcharts.org/, Flot} code (a jQuery plotting library)
+into a Haskell package, so it can be depended upon by Cabal packages.
+The first three components of the version number match the upstream flot
+version.  The package is designed to meet the redistribution
+requirements of downstream users (e.g. Debian).")
+    (license license:expat)))
diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm
index 53c4dcc5ff..940fbe8a6c 100644
--- a/gnu/packages/haskell-xyz.scm
+++ b/gnu/packages/haskell-xyz.scm
@@ -1,5 +1,25 @@
 ;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015, 2016 Federico Beffa <beffa@fbengineering.ch>
+;;; Copyright © 2015 Siniša Biđin <sinisa@bidin.eu>
+;;; Copyright © 2015 Paul van der Walt <paul@denknerd.org>
+;;; Copyright © 2015, 2019 Eric Bavier <bavier@member.fsf.org>
+;;; Copyright © 2016, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2016, 2017 ng0 <ng0@n0.is>
+;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2015, 2016, 2017, 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2016, 2017 David Craven <david@craven.ch>
+;;; Copyright © 2017 Danny Milosavljevic <dannym@scratchpost.org>
+;;; Copyright © 2017 Peter Mikkelsen <petermikkelsen10@gmail.com>
+;;; Copyright © 2017, 2018 Alex Vong <alexvong1995@gmail.com>
+;;; Copyright © 2017 rsiddharth <s@ricketyspace.net>
+;;; Copyright © 2017, 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2018 Tonton <tonton@riseup.net>
+;;; Copyright © 2018, 2019 Timothy Sample <samplet@ngyro.com>
+;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
+;;; Copyright © 2018, 2019 Gabriel Hondet <gabrielhondet@gmail.com>
 ;;; Copyright © 2019 Robert Vollmert <rob@vllmrt.net>
+;;; Copyright © 2019 Jacob MacDonald <jaccarmac@gmail.com>
+;;; Copyright © 2019 John Soo <jsoo1@asu.edu>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -18,13 +38,1804 @@
 
 (define-module (gnu packages haskell-xyz)
   #:use-module (gnu packages)
-  #:use-module (gnu packages haskell)
+  #:use-module (gnu packages base)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages emacs)
+  #:use-module (gnu packages gcc)
+  #:use-module (gnu packages gl)
+  #:use-module (gnu packages graphviz)
+  #:use-module (gnu packages gtk)
+  #:use-module (gnu packages haskell-apps)
   #:use-module (gnu packages haskell-check)
+  #:use-module (gnu packages haskell-crypto)
+  #:use-module (gnu packages haskell-web)
+  #:use-module (gnu packages libffi)
+  #:use-module (gnu packages linux)
+  #:use-module (gnu packages lua)
+  #:use-module (gnu packages maths)
+  #:use-module (gnu packages pcre)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages sdl)
+  #:use-module (gnu packages xml)
+  #:use-module (gnu packages xorg)
   #:use-module (guix build-system haskell)
   #:use-module (guix download)
+  #:use-module (guix git-download)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix packages))
 
+(define-public ghc-abstract-deque
+  (package
+    (name "ghc-abstract-deque")
+    (version "0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "abstract-deque-" version "/"
+                           "abstract-deque-" version ".tar.gz"))
+       (sha256
+        (base32
+         "18jwswjxwzc9bjiy4ds6hw2a74ki797jmfcifxd2ga4kh7ri1ah9"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-random" ,ghc-random)))
+    (home-page "https://github.com/rrnewton/haskell-lockfree/wiki")
+    (synopsis "Abstract, parameterized interface to mutable Deques for Haskell")
+    (description "This Haskell package provides an abstract interface to
+highly-parameterizable queues/deques.
+
+Background: There exists a feature space for queues that extends between:
+
+@itemize
+@item Simple, single-ended, non-concurrent, bounded queues
+
+@item Double-ended, thread-safe, growable queues with important points
+in between (such as the queues used for work stealing).
+@end itemize
+
+This package includes an interface for Deques that allows the programmer
+to use a single API for all of the above, while using the type system to
+select an efficient implementation given the requirements (using type families).
+
+This package also includes a simple reference implementation based on
+@code{IORef} and @code{Data.Sequence}.")
+    (license license:bsd-3)))
+
+(define-public ghc-abstract-par
+  (package
+    (name "ghc-abstract-par")
+    (version "0.3.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "abstract-par-" version "/"
+                           "abstract-par-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0q6qsniw4wks2pw6wzncb1p1j3k6al5njnvm2v5n494hplwqg2i4"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/simonmar/monad-par")
+    (synopsis "Abstract parallelization interface for Haskell")
+    (description "This Haskell package is an abstract interface
+only.  It provides a number of type clasess, but not an
+implementation.  The type classes separate different levels
+of @code{Par} functionality.  See the @code{Control.Monad.Par.Class}
+module for more details.")
+    (license license:bsd-3)))
+
+(define-public ghc-adjunctions
+  (package
+    (name "ghc-adjunctions")
+    (version "4.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/adjunctions/adjunctions-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1sbal7cbhm12crfnfhkk322jnzgx7lhw3jzq0p463bipagsjwz2h"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-profunctors" ,ghc-profunctors)
+       ("ghc-comonad" ,ghc-comonad)
+       ("ghc-contravariant" ,ghc-contravariant)
+       ("ghc-distributive" ,ghc-distributive)
+       ("ghc-free" ,ghc-free)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-semigroupoids" ,ghc-semigroupoids)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-void" ,ghc-void)))
+    (native-inputs
+     `(("ghc-generic-deriving" ,ghc-generic-deriving)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/ekmett/adjunctions/")
+    (synopsis "Adjunctions and representable functors")
+    (description "This library provides adjunctions and representable functors
+for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-aeson-compat
+  (package
+    (name "ghc-aeson-compat")
+    (version "0.3.8")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "aeson-compat-" version "/"
+                           "aeson-compat-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0j4v13pgk21zy8hqkbx8hw0n05jdl17qphxz9rj4h333pr547r3i"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f))  ;  FIXME: Tests require QuickCheck >= 2.10
+    (inputs `(("ghc-base-compat" ,ghc-base-compat)
+              ("ghc-aeson" ,ghc-aeson)
+              ("ghc-attoparsec" ,ghc-attoparsec)
+              ("ghc-attoparsec" ,ghc-attoparsec-iso8601)
+              ("ghc-exceptions" ,ghc-exceptions)
+              ("ghc-hashable" ,ghc-hashable)
+              ("ghc-scientific" ,ghc-scientific)
+              ("ghc-time-locale-compat" ,ghc-time-locale-compat)
+              ("ghc-unordered-containers" ,ghc-unordered-containers)
+              ("ghc-vector" ,ghc-vector)
+              ("ghc-tagged" ,ghc-tagged)
+              ("ghc-semigroups" ,ghc-semigroups)
+              ("ghc-nats" ,ghc-nats)))
+    (home-page "https://github.com/phadej/aeson-compat")
+    (synopsis "Compatibility layer for ghc-aeson")
+    (description "This Haskell package provides compatibility layer for
+ghc-aeson.")
+    (license license:bsd-3)))
+
+(define-public ghc-alex
+  (package
+    (name "ghc-alex")
+    (version "3.2.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/alex/alex-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0cpjixgsr0b2x4s6hz4aa6gnmjw9i7xd9nlfi8m37zqlidq4v3nm"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'check 'set-check-variables
+           (lambda _
+             (setenv "PATH" (string-append (getcwd) "/dist/build/alex:"
+                                           (getenv "PATH")))
+             (setenv "alex_datadir" (string-append (getcwd) "/data"))
+             #t)))))
+    (inputs `(("ghc-quickcheck" ,ghc-quickcheck)))
+    (native-inputs
+     `(("which" ,which)))
+    (home-page "https://www.haskell.org/alex/")
+    (synopsis
+     "Tool for generating lexical analysers in Haskell")
+    (description
+     "Alex is a tool for generating lexical analysers in Haskell.  It takes a
+description of tokens based on regular expressions and generates a Haskell
+module containing code for scanning text efficiently.  It is similar to the
+tool lex or flex for C/C++.")
+    (license license:bsd-3)))
+
+(define-public ghc-alsa-core
+  (package
+    (name "ghc-alsa-core")
+    (version "0.5.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/alsa-core/alsa-core-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1avh4a419h9d2zsslg6j8hm87ppgsgqafz8ll037rk2yy1g4jl7b"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-extensible-exceptions" ,ghc-extensible-exceptions)
+       ("alsa-lib" ,alsa-lib)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (home-page "http://www.haskell.org/haskellwiki/ALSA")
+    (synopsis "Binding to the ALSA Library API (Exceptions)")
+    (description "This package provides access to ALSA infrastructure, that is
+needed by both alsa-seq and alsa-pcm.")
+    (license license:bsd-3)))
+
+(define-public ghc-annotated-wl-pprint
+  (package
+    (name "ghc-annotated-wl-pprint")
+    (version "0.7.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/annotated-wl-pprint"
+             "/annotated-wl-pprint-" version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "061xfz6qany3wf95csl8dcik2pz22cn8iv1qchhm16isw5zjs9hc"))))
+    (build-system haskell-build-system)
+    (home-page
+     "https://github.com/david-christiansen/annotated-wl-pprint")
+    (synopsis
+     "The Wadler/Leijen Pretty Printer, with annotation support")
+    (description "This is a modified version of wl-pprint, which was based on
+Wadler's paper \"A Prettier Printer\".  This version allows the library user
+to annotate the text with semantic information, which can later be rendered in
+a variety of ways.")
+    (license license:bsd-3)))
+
+(define-public ghc-ansi-terminal
+  (package
+    (name "ghc-ansi-terminal")
+    (version "0.8.0.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/ansi-terminal/ansi-terminal-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0428gq8m3fdnb7ldcsyk97qcch76hcxbgh2666p6f76fs2qbhg7b"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-colour" ,ghc-colour)))
+    (home-page "https://github.com/feuerbach/ansi-terminal")
+    (synopsis "ANSI terminal support for Haskell")
+    (description "This package provides ANSI terminal support for Haskell.  It
+allows cursor movement, screen clearing, color output showing or hiding the
+cursor, and changing the title.")
+    (license license:bsd-3)))
+
+(define-public ghc-ansi-wl-pprint
+  (package
+    (name "ghc-ansi-wl-pprint")
+    (version "0.6.8.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "ansi-wl-pprint/ansi-wl-pprint-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0gnb4mkqryv08vncxnj0bzwcnd749613yw3cxfzw6y3nsldp4c56"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-ansi-terminal" ,ghc-ansi-terminal)))
+    (home-page "https://github.com/ekmett/ansi-wl-pprint")
+    (synopsis "Wadler/Leijen Pretty Printer for colored ANSI terminal output")
+    (description "This is a pretty printing library based on Wadler's paper
+\"A Prettier Printer\".  It has been enhanced with support for ANSI terminal
+colored output using the ansi-terminal package.")
+    (license license:bsd-3)))
+
+(define-public ghc-appar
+  (package
+    (name "ghc-appar")
+    (version "0.1.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/appar/appar-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "09jb9ij78fdkz2qk66rw99q19qnm504dpv0yq0pjsl6xwjmndsjq"))))
+    (build-system haskell-build-system)
+    (home-page
+     "https://hackage.haskell.org/package/appar")
+    (synopsis "Simple applicative parser")
+    (description "This package provides a simple applicative parser in Parsec
+style.")
+    (license license:bsd-3)))
+
+(define-public ghc-async
+  (package
+    (name "ghc-async")
+    (version "2.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/async/async-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "09whscli1q5z7lzyq9rfk0bq1ydplh6pjmc6qv0x668k5818c2wg"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-hashable" ,ghc-hashable)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
+    (home-page "https://github.com/simonmar/async")
+    (synopsis "Library to run IO operations asynchronously")
+    (description "Async provides a library to run IO operations
+asynchronously, and wait for their results.  It is a higher-level interface
+over threads in Haskell, in which @code{Async a} is a concurrent thread that
+will eventually deliver a value of type @code{a}.")
+    (license license:bsd-3)))
+
+(define-public ghc-atomic-write
+  (package
+    (name "ghc-atomic-write")
+    (version "0.2.0.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/atomic-write/atomic-write-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1iaq0hprxcv0sl1sgwcgmm87zraf738va1bciwnx2jkk3k1v9iyv"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-temporary" ,ghc-temporary)
+       ("ghc-unix-compat" ,ghc-unix-compat)))
+    (native-inputs
+     `(("ghc-temporary" ,ghc-temporary)
+       ("ghc-unix-compat" ,ghc-unix-compat)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/stackbuilders/atomic-write")
+    (synopsis "Atomically write to a file")
+    (description
+     "Atomically write to a file on POSIX-compliant systems while preserving
+permissions.  @code{mv} is an atomic operation.  This makes it simple to write
+to a file atomically just by using the @code{mv} operation.  However, this
+will destroy the permissions on the original file.  This library preserves
+permissions while atomically writing to a file.")
+    (license license:expat)))
+
+(define-public ghc-attoparsec
+  (package
+    (name "ghc-attoparsec")
+    (version "0.13.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/attoparsec/attoparsec-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0j6qcwd146yzlkc9mcvzvnixsyl65n2a68l28322q5v9p4g4g4yx"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'patch-for-newer-quickcheck
+           (lambda _
+             (substitute* "attoparsec.cabal"
+               (("QuickCheck >= 2\\.7 && < 2\\.10")
+                "QuickCheck >= 2.7 && < 2.12"))
+             ;; This test fails because of the newer QuickCheck:
+             ;; <https://github.com/bos/attoparsec/issues/134>.
+             (substitute* "tests/QC/ByteString.hs"
+               ((", testProperty \"satisfyWith\" satisfyWith")
+                "")))))))
+    (inputs
+     `(("ghc-scientific" ,ghc-scientific)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-quickcheck-unicode" ,ghc-quickcheck-unicode)
+       ("ghc-vector" ,ghc-vector)))
+    (home-page "https://github.com/bos/attoparsec")
+    (synopsis "Fast combinator parsing for bytestrings and text")
+    (description "This library provides a fast parser combinator library,
+aimed particularly at dealing efficiently with network protocols and
+complicated text/binary file formats.")
+    (license license:bsd-3)))
+
+(define-public ghc-attoparsec-bootstrap
+  (package
+    (inherit ghc-attoparsec)
+    (name "ghc-attoparsec-bootstrap")
+    (arguments `(#:tests? #f))
+    (inputs
+     `(("ghc-scientific" ,ghc-scientific-bootstrap)))
+    (native-inputs '())
+    (properties '(hidden? #t))))
+
+(define-public ghc-attoparsec-iso8601
+  (package
+    (name "ghc-attoparsec-iso8601")
+    (version "1.0.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "attoparsec-iso8601-" version "/"
+                           "attoparsec-iso8601-" version ".tar.gz"))
+       (sha256
+        (base32
+         "12l55b76bhya9q89mfmqmy6sl5v39b6gzrw5rf3f70vkb23nsv5a"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("1" "06f7pgmmc8456p3hc1y23kz1y127gfczy7s00wz1rls9g2sm2vi4")))
+    (inputs `(("ghc-attoparsec" ,ghc-attoparsec)
+              ("ghc-base-compat" ,ghc-base-compat)))
+    (home-page "https://github.com/bos/aeson")
+    (synopsis "Parse ISO 8601 dates")
+    (description "Haskell library for parsing of ISO 8601 dates, originally
+from aeson.")
+    (license license:bsd-3)))
+
+(define-public ghc-auto-update
+  (package
+    (name "ghc-auto-update")
+    (version "0.1.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/auto-update/auto-update-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "09dlh2alsx2mw5kvj931yhbj0aw7jmly2cm9xbscm2sf098w35jy"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/yesodweb/wai")
+    (synopsis "Efficiently run periodic, on-demand actions")
+    (description "This library provides mechanisms to efficiently run
+periodic, on-demand actions in Haskell.")
+    (license license:expat)))
+
+(define-public ghc-aws
+  (package
+    (name "ghc-aws")
+    (version "0.20")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "aws-" version "/aws-" version ".tar.gz"))
+       (sha256 (base32
+                "0pwpabmypi1w8rni9qfwabgn95jks4h8dyw6889mn8xzsrhdhyf0"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f)) ; Tests require AWS credentials.
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-base16-bytestring" ,ghc-base16-bytestring)
+       ("ghc-base64-bytestring" ,ghc-base64-bytestring)
+       ("ghc-blaze-builder" ,ghc-blaze-builder)
+       ("ghc-byteable" ,ghc-byteable)
+       ("ghc-case-insensitive" ,ghc-case-insensitive)
+       ("ghc-cereal" ,ghc-cereal)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-conduit-extra" ,ghc-conduit-extra)
+       ("ghc-cryptonite" ,ghc-cryptonite)
+       ("ghc-data-default" ,ghc-data-default)
+       ("ghc-http-conduit" ,ghc-http-conduit)
+       ("ghc-http-types" ,ghc-http-types)
+       ("ghc-lifted-base" ,ghc-lifted-base)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-network" ,ghc-network)
+       ("ghc-old-locale" ,ghc-old-locale)
+       ("ghc-safe" ,ghc-safe)
+       ("ghc-scientific" ,ghc-scientific)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-utf8-string" ,ghc-utf8-string)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-xml-conduit" ,ghc-xml-conduit)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-errors" ,ghc-errors)
+       ("ghc-http-client" ,ghc-http-client)
+       ("ghc-http-client-tls" ,ghc-http-client-tls)
+       ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-conduit-combinators" ,ghc-conduit-combinators)))
+    (home-page "https://github.com/aristidb/aws")
+    (synopsis "Amazon Web Services for Haskell")
+    (description "This package attempts to provide support for using
+Amazon Web Services like S3 (storage), SQS (queuing) and others to
+Haskell programmers.  The ultimate goal is to support all Amazon
+Web Services.")
+    (license license:bsd-3)))
+
+(define-public ghc-base16-bytestring
+  (package
+    (name "ghc-base16-bytestring")
+    (version "0.1.1.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/base16-bytestring/"
+             "base16-bytestring-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0jf40m3yijqw6wd1rwwvviww46fasphaay9m9rgqyhf5aahnbzjs"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/bos/base16-bytestring")
+    (synopsis "Fast base16 (hex) encoding and decoding for ByteStrings")
+    (description
+     "This package provides a Haskell library for working with base16-encoded
+data quickly and efficiently, using the ByteString type.")
+    (license license:bsd-3)))
+
+(define-public ghc-base64-bytestring
+  (package
+    (name "ghc-base64-bytestring")
+    (version "1.0.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/base64-bytestring/base64-bytestring-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32 "13305brzlac24pifiqd5a2z10c6k6amhpdy9cc0z5ryrkgnm8dhr"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f))         ; FIXME: testing libraries are missing.
+    (home-page "https://github.com/bos/base64-bytestring")
+    (synopsis "Base64 encoding and decoding for ByteStrings")
+    (description "This library provides fast base64 encoding and decoding for
+Haskell @code{ByteString}s.")
+    (license license:bsd-3)))
+
+(define-public ghc-base-compat
+  (package
+    (name "ghc-base-compat")
+    (version "0.10.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/base-compat/base-compat-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0ksp990gxs731mq19rzbxrbs43nazfljjc8krlx5bjqblw3kfs8d"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://hackage.haskell.org/package/base-compat")
+    (synopsis "Haskell compiler compatibility library")
+    (description "This library provides functions available in later versions
+of base to a wider range of compilers, without requiring the use of CPP
+pragmas in your code.")
+    (license license:bsd-3)))
+
+(define-public ghc-basement
+  (package
+    (name "ghc-basement")
+    (version "0.0.8")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "basement/basement-" version ".tar.gz"))
+       (sha256
+        (base32
+         "194jw567di4q2758943q9rrwkbf9gl261my7qc21i9xhyabipx67"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/haskell-foundation/foundation")
+    (synopsis "Basic primitives for Foundation starter pack")
+    (description
+     "This package contains basic primitives for the Foundation set of
+packages.")
+    (license license:bsd-3)))
+
+(define-public ghc-base-orphans
+  (package
+    (name "ghc-base-orphans")
+    (version "0.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/base-orphans/base-orphans-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "057f9npnqk71ccfh95djfkpd54dzazphj06grwxa3fyhwcwxrb8a"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://hackage.haskell.org/package/base-orphans")
+    (synopsis "Orphan instances for backwards compatibility")
+    (description "This package defines orphan instances that mimic instances
+available in later versions of base to a wider (older) range of compilers.")
+    (license license:bsd-3)))
+
+(define-public ghc-base-prelude
+  (package
+    (name "ghc-base-prelude")
+    (version "1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "base-prelude-" version "/"
+                           "base-prelude-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1zk728sd09hh2r4xwz4lazsrrgg5cshydn64932sm0vckplndk73"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/nikita-volkov/base-prelude")
+    (synopsis "The most complete prelude formed solely from the Haskell's base
+package")
+    (description "This Haskell package aims to reexport all the non-conflicting
+and most general definitions from the \"base\" package.
+
+This includes APIs for applicatives, arrows, monoids, foldables, traversables,
+exceptions, generics, ST, MVars and STM.
+
+This package will never have any dependencies other than \"base\".
+
+Versioning policy:
+
+The versioning policy of this package deviates from PVP in the sense
+that its exports in part are transitively determined by the version of \"base\".
+Therefore it's recommended for the users of @code{ghc-base-prelude} to specify
+the bounds of \"base\" as well.")
+    (license license:expat)))
+
+(define-public ghc-base-unicode-symbols
+  (package
+    (name "ghc-base-unicode-symbols")
+    (version "0.2.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/base-unicode-symbols/base-unicode-symbols-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1ia6li7qjg1zkak4gf6mnbshw45mq9bfjr0jch58ds0lscmvwyzf"))))
+    (build-system haskell-build-system)
+    (home-page "http://www.haskell.org/haskellwiki/Unicode-symbols")
+    (synopsis "Unicode alternatives for common functions and operators")
+    (description "This package defines new symbols for a number of functions,
+operators and types in the base package.  All symbols are documented with
+their actual definition and information regarding their Unicode code point.
+They should be completely interchangeable with their definitions.  For
+further Unicode goodness you can enable the @code{UnicodeSyntax}
+@url{https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/glasgow_exs.html#unicode-syntax,
+language extension}.  This extension enables Unicode characters to be used to
+stand for certain ASCII character sequences, i.e. → instead of @code{->},
+∀ instead of @code{forall} and many others.")
+    (license license:bsd-3)))
+
+(define-public ghc-bifunctors
+  (package
+    (name "ghc-bifunctors")
+    (version "5.5.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/bifunctors/bifunctors-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1jn9rxg643xnlhrknmjz88nblcpsr45xwjkwwnn5nxpasa7m4d6l"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-base-orphans" ,ghc-base-orphans)
+       ("ghc-comonad" ,ghc-comonad)
+       ("ghc-th-abstraction" ,ghc-th-abstraction)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-semigroups" ,ghc-semigroups)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/ekmett/bifunctors/")
+    (synopsis "Bifunctors for Haskell")
+    (description "This package provides bifunctors for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-bindings-dsl
+  (package
+    (name "ghc-bindings-dsl")
+    (version "1.0.25")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/bindings-DSL/"
+                           "bindings-DSL-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0kqrd78nspl3lk4a0fqn47d8dirjg3b24dkvkigcrlb81hw35pk3"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/jwiegley/bindings-dsl/wiki")
+    (synopsis "FFI domain specific language, on top of hsc2hs")
+    (description
+     "This is a set of macros to be used when writing Haskell FFI.  They were
+designed to be able to fully describe C interfaces, so that @code{hsc2hs} can
+extract from them all Haskell code needed to mimic such interfaces.  All
+Haskell names used are automatically derived from C names, structures are
+mapped to Haskell instances of @code{Storable}, and there are also macros you
+can use with C code to help write bindings to inline functions or macro
+functions.")
+    (license license:bsd-3)))
+
+(define-public ghc-blaze-builder
+  (package
+    (name "ghc-blaze-builder")
+    (version "0.4.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/blaze-builder/blaze-builder-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "05681dih2d8s96an945wkbwl05w8ddbcfx8n3r3ck79ydyb8pz4i"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f))          ; FIXME: Missing test libraries.
+    (inputs
+     `(("ghc-utf8-string" ,ghc-utf8-string)))
+    (home-page "https://github.com/lpsmith/blaze-builder")
+    (synopsis "Efficient buffered output")
+    (description "This library provides an implementation of the older
+@code{blaze-builder} interface in terms of the new builder that shipped with
+@code{bytestring-0.10.4.0}.  This implementation is mostly intended as a
+bridge to the new builder, so that code that uses the old interface can
+interoperate with code that uses the new implementation.")
+    (license license:bsd-3)))
+
+(define-public ghc-blaze-markup
+  (package
+    (name "ghc-blaze-markup")
+    (version "0.8.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "blaze-markup/blaze-markup-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0ih1c3qahkdgzbqihdhny5s313l2m66fbb88w8jbx7yz56y7rawh"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "blaze-markup.cabal"
+               (("tasty            >= 1\\.0  && < 1\\.1")
+                "tasty            >= 1.0  && < 1.2")))))))
+    (inputs
+     `(("ghc-blaze-builder" ,ghc-blaze-builder)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (home-page "https://jaspervdj.be/blaze")
+    (synopsis "Fast markup combinator library for Haskell")
+    (description "This library provides core modules of a markup combinator
+library for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-bloomfilter
+  (package
+    (name "ghc-bloomfilter")
+    (version "2.0.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "bloomfilter/bloomfilter-" version ".tar.gz"))
+       (sha256
+        (base32
+         "03vrmncg1c10a2wcg5skq30m1yiknn7nwxz2gblyyfaxglshspkc"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-random" ,ghc-random)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://github.com/bos/bloomfilter")
+    (synopsis "Pure and impure Bloom filter implementations")
+    (description "This package provides both mutable and immutable Bloom
+filter data types, along with a family of hash functions and an easy-to-use
+interface.")
+    (license license:bsd-3)))
+
+(define-public ghc-boxes
+  (package
+    (name "ghc-boxes")
+    (version "0.1.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/boxes/boxes-"
+                           version ".tar.gz"))
+       (sha256
+        (base32 "1hsnmw95i58d4bkpxby3ddsj1cawypw4mdyb18m393s5i8p7iq9q"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-split" ,ghc-split)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://hackage.haskell.org/package/boxes")
+    (synopsis "2D text pretty-printing library")
+    (description
+     "Boxes is a pretty-printing library for laying out text in two dimensions,
+using a simple box model.")
+    (license license:bsd-3)))
+
+(define-public ghc-byteable
+  (package
+    (name "ghc-byteable")
+    (version "0.1.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "byteable/byteable-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1qizg0kxxjqnd3cbrjhhidk5pbbciz0pb3z5kzikjjxnnnhk8fr4"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/vincenthz/hs-byteable")
+    (synopsis "Type class for sequence of bytes")
+    (description
+     "This package provides an abstract class to manipulate sequence of bytes.
+The use case of this class is abstracting manipulation of types that are just
+wrapping a bytestring with stronger and more meaniful name.")
+    (license license:bsd-3)))
+
+(define-public ghc-byteorder
+  (package
+    (name "ghc-byteorder")
+    (version "1.0.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/byteorder/byteorder-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "06995paxbxk8lldvarqpb3ygcjbg4v8dk4scib1rjzwlhssvn85x"))))
+    (build-system haskell-build-system)
+    (home-page
+     "http://community.haskell.org/~aslatter/code/byteorder")
+    (synopsis
+     "Exposes the native endianness of the system")
+    (description
+     "This package is for working with the native byte-ordering of the
+system.")
+    (license license:bsd-3)))
+
+(define-public ghc-bytes
+  (package
+   (name "ghc-bytes")
+   (version "0.15.5")
+   (source
+    (origin
+     (method url-fetch)
+     (uri
+      (string-append "https://hackage.haskell.org/package/bytes-"
+                     version "/bytes-"
+                     version ".tar.gz"))
+     (file-name (string-append name "-" version ".tar.gz"))
+     (sha256
+      (base32
+       "063il2vrn0p88r9gzndh4ijs0mxj37khkc9ym9bqdsv7ngk3b683"))))
+   (build-system haskell-build-system)
+   (inputs `(("ghc-cereal" ,ghc-cereal)
+             ("cabal-doctest" ,cabal-doctest)
+             ("ghc-doctest" ,ghc-doctest)
+             ("ghc-scientific" ,ghc-scientific)
+             ("ghc-transformers-compat" ,ghc-transformers-compat)
+             ("ghc-unordered-containers" ,ghc-unordered-containers)
+             ("ghc-void" ,ghc-void)
+             ("ghc-vector" ,ghc-vector)))
+   (synopsis "Serialization between @code{binary} and @code{cereal}")
+   (description "This package provides a simple compatibility shim that lets
+you work with both @code{binary} and @code{cereal} with one chunk of
+serialization code.")
+   (home-page "https://hackage.haskell.org/package/bytes")
+   (license license:bsd-3)))
+
+(define-public ghc-bytestring-builder
+  (package
+    (name "ghc-bytestring-builder")
+    (version "0.10.8.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/bytestring-builder"
+             "/bytestring-builder-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1hnvjac28y44yn78c9vdp1zvrknvlw98ky3g4n5vivr16rvh8x3d"))))
+    (build-system haskell-build-system)
+    (arguments `(#:haddock? #f)) ; Package contains no documentation.
+    (home-page "https://hackage.haskell.org/package/bytestring-builder")
+    (synopsis "The new bytestring builder, packaged outside of GHC")
+    (description "This package provides the bytestring builder that is
+debuting in bytestring-0.10.4.0, which should be shipping with GHC 7.8.
+Compatibility package for older packages.")
+    (license license:bsd-3)))
+
+(define-public ghc-bytestring-handle
+  (package
+    (name "ghc-bytestring-handle")
+    (version "0.1.0.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/bytestring-handle/bytestring-handle-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "18f17aja1ivhr3zyg2cccn2m03hdn5jf5410dndkhf12gvgiqs7y"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "bytestring-handle.cabal"
+               (("QuickCheck >= 2\\.1\\.2 && < 2\\.11")
+                "QuickCheck >= 2.1.2 && < 2.12")
+               (("base >= 4\\.2 && < 4\\.11")
+                "base >= 4.2 && < 4.12")))))))
+    (inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://hub.darcs.net/ganesh/bytestring-handle")
+    (synopsis "ByteString-backed Handles")
+    (description "ByteString-backed Handles") ; There is no description
+    (license license:bsd-3)))
+
+(define-public ghc-bytestring-lexing
+  (package
+    (name "ghc-bytestring-lexing")
+    (version "0.5.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "bytestring-lexing/bytestring-lexing-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0wrzniawhgpphc6yx1v972gyqxdbv0pizaz9bafahrshyb9svy81"))))
+    (build-system haskell-build-system)
+    (home-page "http://code.haskell.org/~wren/")
+    (synopsis "Parse and produce literals from strict or lazy bytestrings")
+    (description
+     "This package provides tools to parse and produce literals efficiently
+from strict or lazy bytestrings.")
+    (license license:bsd-2)))
+
+(define-public ghc-bzlib-conduit
+  (package
+    (name "ghc-bzlib-conduit")
+    (version "0.3.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/bzlib-conduit/"
+                           "bzlib-conduit-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0fd2hnr782s7qgipazg2yxwia9qqhkvm9bcm90773c3zkxa13n23"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-bindings-dsl" ,ghc-bindings-dsl)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-data-default-class" ,ghc-data-default-class)
+       ("ghc-resourcet" ,ghc-resourcet)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-random" ,ghc-random)))
+    (home-page "https://github.com/snoyberg/bzlib-conduit")
+    (synopsis "Streaming compression/decompression via conduits")
+    (description
+     "This package provides Haskell bindings to bzlib and Conduit support for
+streaming compression and decompression.")
+    (license license:bsd-3)))
+
+(define-public ghc-c2hs
+  (package
+    (name "ghc-c2hs")
+    (version "0.28.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/c2hs/c2hs-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1nplgxfin139x12sb656f5870rpdclrhzi8mq8pry035qld15pci"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-language-c" ,ghc-language-c)
+       ("ghc-dlist" ,ghc-dlist)))
+    (native-inputs
+     `(("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-shelly" ,ghc-shelly)
+       ("gcc" ,gcc)))
+    (arguments
+     `(;; XXX: Test failures are induced by a parse error in <bits/floatn.h>
+       ;; of glibc 2.28.
+       #:tests? #f
+
+       #:phases
+       (modify-phases %standard-phases
+         (add-before 'check 'set-cc
+           ;; add a cc executable in the path, needed for some tests to pass
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let ((gcc (assoc-ref inputs "gcc"))
+                   (tmpbin (tmpnam))
+                   (curpath (getenv "PATH")))
+               (mkdir-p tmpbin)
+               (symlink (which "gcc") (string-append tmpbin "/cc"))
+               (setenv "PATH" (string-append tmpbin ":" curpath)))
+             #t))
+         (add-after 'check 'remove-cc
+           ;; clean the tmp dir made in 'set-cc
+           (lambda _
+             (let* ((cc-path (which "cc"))
+                    (cc-dir (dirname cc-path)))
+               (delete-file-recursively cc-dir)
+               #t))))))
+    (home-page "https://github.com/haskell/c2hs")
+    (synopsis "Create Haskell bindings to C libraries")
+    (description "C->Haskell assists in the development of Haskell bindings to
+C libraries.  It extracts interface information from C header files and
+generates Haskell code with foreign imports and marshaling.  Unlike writing
+foreign imports by hand (or using hsc2hs), this ensures that C functions are
+imported with the correct Haskell types.")
+    (license license:gpl2)))
+
+(define-public ghc-cairo
+  (package
+    (name "ghc-cairo")
+    (version "0.13.5.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/cairo/"
+                           "cairo-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1wxylv4d8120ri0vgar168ikqa9m6533ipdwi38qlmxmw20ws2j2"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:modules ((guix build haskell-build-system)
+                  (guix build utils)
+                  (ice-9 match)
+                  (srfi srfi-26))
+       #:phases
+       (modify-phases %standard-phases
+         ;; FIXME: This is a copy of the standard configure phase with a tiny
+         ;; difference: this package needs the -package-db flag to be passed
+         ;; to "runhaskell" in addition to the "configure" action, because it
+         ;; depends on gtk2hs-buildtools, which provide setup hooks.  Without
+         ;; this option the Setup.hs file cannot be evaluated.  The
+         ;; haskell-build-system should be changed to pass "-package-db" to
+         ;; "runhaskell" in any case.
+         (replace 'configure
+           (lambda* (#:key outputs inputs tests? (configure-flags '())
+                     #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (name-version (strip-store-file-name out))
+                    (input-dirs (match inputs
+                                  (((_ . dir) ...)
+                                   dir)
+                                  (_ '())))
+                    (ghc-path (getenv "GHC_PACKAGE_PATH"))
+                    (params (append `(,(string-append "--prefix=" out))
+                                    `(,(string-append "--libdir=" out "/lib"))
+                                    `(,(string-append "--bindir=" out "/bin"))
+                                    `(,(string-append
+                                        "--docdir=" out
+                                        "/share/doc/" name-version))
+                                    '("--libsubdir=$compiler/$pkg-$version")
+                                    '("--package-db=../package.conf.d")
+                                    '("--global")
+                                    `(,@(map
+                                         (cut string-append "--extra-include-dirs=" <>)
+                                         (search-path-as-list '("include") input-dirs)))
+                                    `(,@(map
+                                         (cut string-append "--extra-lib-dirs=" <>)
+                                         (search-path-as-list '("lib") input-dirs)))
+                                    (if tests?
+                                        '("--enable-tests")
+                                        '())
+                                    configure-flags)))
+               (unsetenv "GHC_PACKAGE_PATH")
+               (apply invoke "runhaskell" "-package-db=../package.conf.d"
+                      "Setup.hs" "configure" params)
+               (setenv "GHC_PACKAGE_PATH" ghc-path)
+               #t))))))
+    (inputs
+     `(("ghc-utf8-string" ,ghc-utf8-string)
+       ("cairo" ,cairo)))
+    (native-inputs
+     `(("ghc-gtk2hs-buildtools" ,ghc-gtk2hs-buildtools)
+       ("pkg-config" ,pkg-config)))
+    (home-page "http://projects.haskell.org/gtk2hs/")
+    (synopsis "Haskell bindings to the Cairo vector graphics library")
+    (description
+     "Cairo is a library to render high quality vector graphics.  There exist
+various backends that allows rendering to Gtk windows, PDF, PS, PNG and SVG
+documents, amongst others.")
+    (license license:bsd-3)))
+
+(define-public ghc-call-stack
+  (package
+    (name "ghc-call-stack")
+    (version "0.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "call-stack/call-stack-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1qmihf5jafmc79sk52l6gpx75f5bnla2lp62kh3p34x3j84mwpzj"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-nanospec" ,ghc-nanospec)))
+    (home-page "https://github.com/sol/call-stack#readme")
+    (synopsis "Use GHC call-stacks in a backward compatible way")
+    (description "This package provides a compatibility layer for using GHC
+call stacks with different versions of the compiler.")
+    (license license:expat)))
+
+;; This is used as an input to ghc-hunit.  We cannot use ghc-call-stack there,
+;; because it depends on ghc-nanospec, which depends on ghc-hunit.
+(define-public ghc-call-stack-boot
+  (hidden-package
+   (package
+     (inherit ghc-call-stack)
+     (arguments '(#:tests? #f))
+     (inputs '()))))
+
+(define-public ghc-case-insensitive
+  (package
+    (name "ghc-case-insensitive")
+    (version "1.2.0.11")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/case-insensitive/case-insensitive-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1qrpxfirsxckg7jv28f5ah2qc8lh95hp7rnqkbqs1ahcwlbnvkm7"))))
+    (build-system haskell-build-system)
+    ;; these inputs are necessary to use this library
+    (inputs
+     `(("ghc-hashable" ,ghc-hashable)))
+    (arguments
+     `(#:tests? #f)) ; FIXME: currently missing libraries used for tests.
+    (home-page
+     "https://github.com/basvandijk/case-insensitive")
+    (synopsis "Case insensitive string comparison")
+    (description
+     "The module @code{Data.CaseInsensitive} provides the @code{CI} type
+constructor which can be parameterised by a string-like type like:
+@code{String}, @code{ByteString}, @code{Text}, etc.  Comparisons of values of
+the resulting type will be insensitive to cases.")
+    (license license:bsd-3)))
+
+(define-public ghc-cereal
+  (package
+    (name "ghc-cereal")
+    (version "0.5.7.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/cereal/cereal-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1j7imh2mzqcljld7sx0av69699955rpy3hzivi5723i6a9nszgbs"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-fail" ,ghc-fail)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://hackage.haskell.org/package/cereal")
+    (synopsis "Binary serialization library")
+    (description "This package provides a binary serialization library,
+similar to @code{binary}, that introduces an @code{isolate} primitive for
+parser isolation, and labeled blocks for better error messages.")
+    (license license:bsd-3)))
+
+(define-public ghc-cereal-conduit
+  (package
+    (name "ghc-cereal-conduit")
+    (version "0.8.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "cereal-conduit/cereal-conduit-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1srr7agvgfw78q5s1npjq5sgynvhjgllpihiv37ylkwqm4c4ap6r"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-conduit" ,ghc-conduit)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-cereal" ,ghc-cereal)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://github.com/snoyberg/conduit")
+    (synopsis "Turn Data.Serialize Gets and Puts into Sources, Sinks, and Conduits")
+    (description
+     "This package turn @code{Data.Serialize} @code{Gets} and @code{Puts} into
+@code{Sources}, @code{Sinks}, and @code{Conduits}.")
+    (license license:bsd-3)))
+
+(define-public ghc-cgi
+  (package
+    (name "ghc-cgi")
+    (version "3001.3.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/cgi/cgi-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1hbpplss1m4rdpm4ibip6fpimlhssqa14fl338kl2jbc463i64cj"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "cgi.cabal"
+               (("exceptions < 0\\.9")
+                "exceptions < 0.11")
+               (("time >= 1\\.5 && < 1\\.7")
+                "time >= 1.5 && < 1.9")
+               (("doctest >= 0\\.8 && < 0\\.12")
+                "doctest >= 0.8 && < 0.17")
+               (("QuickCheck >= 2\\.8\\.1 && < 2\\.10")
+                "QuickCheck >= 2.8.1 && < 2.12")))))))
+    (inputs
+     `(("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-multipart" ,ghc-multipart)
+       ("ghc-network-uri" ,ghc-network-uri)
+       ("ghc-network" ,ghc-network)))
+    (native-inputs
+     `(("ghc-doctest" ,ghc-doctest)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page
+     "https://github.com/cheecheeo/haskell-cgi")
+    (synopsis "Library for writing CGI programs")
+    (description
+     "This is a Haskell library for writing CGI programs.")
+    (license license:bsd-3)))
+
+(define-public ghc-charset
+  (package
+    (name "ghc-charset")
+    (version "0.3.7.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/charset/charset-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1gn0m96qpjww8hpp2g1as5yy0wcwy4iq73h3kz6g0yxxhcl5sh9x"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)))
+    (home-page "https://github.com/ekmett/charset")
+    (synopsis "Fast unicode character sets for Haskell")
+    (description "This package provides fast unicode character sets for
+Haskell, based on complemented PATRICIA tries.")
+    (license license:bsd-3)))
+
+(define-public ghc-chart
+  (package
+    (name "ghc-chart")
+    (version "1.9")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/Chart/"
+                           "Chart-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1f5azj17y8xsb3gjhf7gg1gnnlq12rxkmfjmgcly314d7vghs05z"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-old-locale" ,ghc-old-locale)
+       ("ghc-lens" ,ghc-lens)
+       ("ghc-colour" ,ghc-colour)
+       ("ghc-data-default-class" ,ghc-data-default-class)
+       ("ghc-operational" ,ghc-operational)
+       ("ghc-vector" ,ghc-vector)))
+    (home-page "https://github.com/timbod7/haskell-chart/wiki")
+    (synopsis "Library for generating 2D charts and plots")
+    (description
+     "This package provides a library for generating 2D charts and plots, with
+backends provided by the @code{Cairo} and @code{Diagrams} libraries.")
+    (license license:bsd-3)))
+
+(define-public ghc-chart-cairo
+  (package
+    (name "ghc-chart-cairo")
+    (version "1.9")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/Chart-cairo/"
+                           "Chart-cairo-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0iany6lfyfb1cw0pxfs5aw5k0a6x41m6ql9ad9w59biwdckbsyqr"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-old-locale" ,ghc-old-locale)
+       ("ghc-cairo" ,ghc-cairo)
+       ("ghc-colour" ,ghc-colour)
+       ("ghc-data-default-class" ,ghc-data-default-class)
+       ("ghc-operational" ,ghc-operational)
+       ("ghc-lens" ,ghc-lens)
+       ("ghc-chart" ,ghc-chart)))
+    (home-page "https://github.com/timbod7/haskell-chart/wiki")
+    (synopsis "Cairo backend for Charts")
+    (description "This package provides a Cairo vector graphics rendering
+backend for the Charts library.")
+    (license license:bsd-3)))
+
+(define-public ghc-chasingbottoms
+  (package
+    (name "ghc-chasingbottoms")
+    (version "1.3.1.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/ChasingBottoms/"
+                           "ChasingBottoms-" version ".tar.gz"))
+       (sha256
+        (base32
+         "06cynx6hcbfpky7qq3b3mjjgwbnaxkwin3znbwq4b9ikiw0ng633"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-random" ,ghc-random)
+       ("ghc-syb" ,ghc-syb)))
+    (home-page "https://hackage.haskell.org/package/ChasingBottoms")
+    (synopsis "Testing of partial and infinite values in Haskell")
+    (description
+     ;; FIXME: There should be a @comma{} in the uref text, but it is not
+     ;; rendered properly.
+     "This is a library for testing code involving bottoms or infinite values.
+For the underlying theory and a larger example involving use of QuickCheck,
+see the article
+@uref{http://www.cse.chalmers.se/~nad/publications/danielsson-jansson-mpc2004.html,
+\"Chasing Bottoms A Case Study in Program Verification in the Presence of
+Partial and Infinite Values\"}.")
+    (license license:expat)))
+
+(define-public ghc-cheapskate
+  (package
+    (name "ghc-cheapskate")
+    (version "0.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/cheapskate/cheapskate-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1hiqi7h76shjzs2zj0j8g6wnq2hbiq1hmfafdazr97fba2zl2432"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-blaze-html" ,ghc-blaze-html)
+       ("ghc-xss-sanitize" ,ghc-xss-sanitize)
+       ("ghc-data-default" ,ghc-data-default)
+       ("ghc-syb" ,ghc-syb)
+       ("ghc-uniplate" ,ghc-uniplate)))
+    (home-page "https://github.com/jgm/cheapskate")
+    (synopsis "Experimental markdown processor")
+    (description "Cheapskate is an experimental Markdown processor in pure
+Haskell.  It aims to process Markdown efficiently and in the most forgiving
+possible way.  It is designed to deal with any input, including garbage, with
+linear performance.  Output is sanitized by default for protection against
+cross-site scripting (@dfn{XSS}) attacks.")
+    (license license:bsd-3)))
+
+(define-public ghc-chell
+  (package
+    (name "ghc-chell")
+    (version "0.4.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/chell/chell-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "10ingy9qnbmc8cqh4i9pskcw43l0mzk8f3d76b3qz3fig5ary3j9"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-options-bootstrap" ,ghc-options-bootstrap)
+       ("ghc-patience" ,ghc-patience)
+       ("ghc-random" ,ghc-random)
+       ("ghc-ansi-terminal" ,ghc-ansi-terminal)))
+    (home-page "https://john-millikin.com/software/chell/")
+    (synopsis "Simple and intuitive library for automated testing")
+    (description
+     "Chell is a simple and intuitive library for automated testing.
+It natively supports assertion-based testing, and can use companion
+libraries such as @code{chell-quickcheck} to support more complex
+testing strategies.")
+    (license license:expat)))
+
+(define-public ghc-chell-quickcheck
+  (package
+    (name "ghc-chell-quickcheck")
+    (version "0.2.5.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/chell-quickcheck/"
+             "chell-quickcheck-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1iicsys9igx7m7n4l2b8djardmjy2ah5ibzp7kzs758h460fq53a"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "chell-quickcheck.cabal"
+               (("QuickCheck >= 2\\.3 && < 2\\.11")
+                "QuickCheck >= 2.3 && < 2.12")))))))
+    (inputs
+     `(("ghc-chell" ,ghc-chell)
+       ("ghc-chell-quickcheck-bootstrap" ,ghc-chell-quickcheck-bootstrap)
+       ("ghc-random" ,ghc-random)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://john-millikin.com/software/chell/")
+    (synopsis "QuickCheck support for the Chell testing library")
+    (description "More complex tests for @code{chell}.")
+    (license license:expat)))
+
+(define ghc-chell-quickcheck-bootstrap
+  (package
+    (name "ghc-chell-quickcheck-bootstrap")
+    (version "0.2.5.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/chell-quickcheck/"
+             "chell-quickcheck-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1iicsys9igx7m7n4l2b8djardmjy2ah5ibzp7kzs758h460fq53a"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-chell" ,ghc-chell)
+       ("ghc-random" ,ghc-random)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (arguments
+     `(#:tests? #f
+       #:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "chell-quickcheck.cabal"
+               (("QuickCheck >= 2\\.3 && < 2\\.11")
+                "QuickCheck >= 2.3 && < 2.12")))))))
+    (home-page "https://john-millikin.com/software/chell/")
+    (synopsis "QuickCheck support for the Chell testing library")
+    (description "More complex tests for @code{chell}.")
+    (license license:expat)))
+
+(define-public ghc-chunked-data
+  (package
+    (name "ghc-chunked-data")
+    (version "0.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "chunked-data-" version "/"
+                           "chunked-data-" version ".tar.gz"))
+       (sha256
+        (base32
+         "16m7y7fwrirbjbqqcsfmr4yxa9qvfax6r7pw0zl9ky71ms0wa47p"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-vector" ,ghc-vector)
+              ("ghc-semigroups" ,ghc-semigroups)))
+    (home-page "https://github.com/snoyberg/mono-traversable")
+    (synopsis "Typeclasses for dealing with various chunked data
+representations for Haskell")
+    (description "This Haskell package was originally present in
+classy-prelude.")
+    (license license:expat)))
+
+(define-public ghc-clock
+  (package
+    (name "ghc-clock")
+    (version "0.7.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/"
+             "clock/"
+             "clock-" version ".tar.gz"))
+       (sha256
+        (base32 "07v91s20halsqjmziqb1sqjp2sjpckl9by7y28aaklwqi2bh2rl8"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (home-page "https://hackage.haskell.org/package/clock")
+    (synopsis "High-resolution clock for Haskell")
+    (description "A package for convenient access to high-resolution clock and
+timer functions of different operating systems via a unified API.")
+    (license license:bsd-3)))
+
+;; This package builds `clock` without tests, since the tests rely on tasty
+;; and tasty-quickcheck, which in turn require clock to build.
+(define-public ghc-clock-bootstrap
+  (package
+    (inherit ghc-clock)
+    (name "ghc-clock-bootstrap")
+    (arguments '(#:tests? #f))
+    (inputs '())
+    (properties '((hidden? #t)))))
+
+(define-public ghc-cmark
+  (package
+    (name "ghc-cmark")
+    (version "0.5.6")
+    (source (origin
+              (method url-fetch)
+              ;; XXX As of version 0.5.6, this package bundles libcmark 0.28.0.
+              ;; See cbits/cmark_version.h.
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "cmark/cmark-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1c1j3a8b9qx5zk9myqm3gap8ymz7fipwrdmyfsq9wkkdr9x4np45"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://github.com/jgm/commonmark-hs")
+    (synopsis "Fast, accurate CommonMark (Markdown) parser and renderer")
+    (description
+     "This package provides Haskell bindings for
+@uref{https://github.com/jgm/cmark, libcmark}, the reference parser for
+CommonMark, a fully specified variant of Markdown.  It includes bundled libcmark
+sources, and does not require prior installation of the C library.")
+    (license license:bsd-3)))
+
+(define-public ghc-cmark-gfm
+  (package
+    (name "ghc-cmark-gfm")
+    (version "0.1.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "cmark-gfm/cmark-gfm-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "13b0mqks5c1q989slgsa3ixr5vvkfyic4ynzgv00kgl5qrs7hqk7"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://github.com/kivikakk/cmark-gfm-hs")
+    (synopsis
+     "Fast, accurate GitHub Flavored Markdown parser and renderer")
+    (description
+     "This package provides Haskell bindings for libcmark-gfm, the reference
+parser for GitHub Flavored Markdown, a fully specified variant of Markdown.
+It includes sources for libcmark-gfm and does not require prior installation
+of the C library.")
+    (license license:bsd-3)))
+
+(define-public ghc-cmdargs
+  (package
+    (name "ghc-cmdargs")
+    (version "0.10.20")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/cmdargs/cmdargs-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0cbkmgrcnwgigg6z88y3c09gm7g6dwm7gzbgr53h8k1xik29s9hf"))))
+    (build-system haskell-build-system)
+    (home-page
+     "http://community.haskell.org/~ndm/cmdargs/")
+    (synopsis "Command line argument processing")
+    (description
+     "This library provides an easy way to define command line parsers.")
+    (license license:bsd-3)))
+
+(define-public ghc-code-page
+  (package
+  (name "ghc-code-page")
+  (version "0.1.3")
+  (source
+   (origin
+     (method url-fetch)
+     (uri (string-append
+           "https://hackage.haskell.org/package/code-page/code-page-"
+           version ".tar.gz"))
+      (sha256
+       (base32
+        "1491frk4jx6dlhifky9dvcxbsbcfssrz979a5hp5zn061rh8cp76"))))
+  (build-system haskell-build-system)
+  (home-page "https://github.com/RyanGlScott/code-page")
+  (synopsis "Windows code page library for Haskell")
+  (description "A cross-platform library with functions for adjusting
+code pages on Windows.  On all other operating systems, the library does
+nothing.")
+  (license license:bsd-3)))
+
+(define-public ghc-colour
+(package
+  (name "ghc-colour")
+  (version "2.3.4")
+  (source
+   (origin
+     (method url-fetch)
+     (uri (string-append
+           "https://hackage.haskell.org/package/colour/colour-"
+           version ".tar.gz"))
+     (sha256
+      (base32
+       "1sy51nz096sv91nxqk6yk7b92b5a40axv9183xakvki2nc09yhqg"))))
+  (arguments
+   ;; The tests for this package have the following dependency cycle:
+   ;; ghc-test-framework -> ghc-ansi-terminal -> ghc-colour.
+   `(#:tests? #f))
+  (build-system haskell-build-system)
+  (home-page "https://www.haskell.org/haskellwiki/Colour")
+  (synopsis "Model for human colour perception")
+  (description
+   "This package provides a data type for colours and transparency.
+Colours can be blended and composed.  Various colour spaces are
+supported.  A module of colour names (\"Data.Colour.Names\") is provided.")
+  (license license:expat)))
+
+(define-public ghc-comonad
+  (package
+    (name "ghc-comonad")
+    (version "5.0.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/comonad/comonad-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "09g870c4flp4k3fgbibsd0mmfjani1qcpbcl685v8x89kxzrva3q"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("cabal-doctest" ,cabal-doctest)
+       ("ghc-doctest" ,ghc-doctest)))
+    (inputs
+     `(("ghc-contravariant" ,ghc-contravariant)
+       ("ghc-distributive" ,ghc-distributive)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (home-page "https://github.com/ekmett/comonad/")
+    (synopsis "Comonads for Haskell")
+    (description "This library provides @code{Comonad}s for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-concatenative
+  (package
+    (name "ghc-concatenative")
+    (version "1.0.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/concatenative/concatenative-"
+                    version ".tar.gz"))
+              (sha256
+               (base32
+                "05xwqvcdnk8bsyj698ab9jxpa1nk23pf3m7wi9mwmw0q8n99fngd"))))
+    (build-system haskell-build-system)
+    (home-page
+     "https://patch-tag.com/r/salazar/concatenative/snapshot/current/content/pretty")
+    (synopsis "Library for postfix control flow")
+    (description
+     "Concatenative gives Haskell Factor-style combinators and arrows for
+postfix notation.  For more information on stack based languages, see
+@uref{https://concatenative.org}.")
+    (license license:bsd-3)))
+
 (define-public ghc-concurrent-extra
   (package
     (name "ghc-concurrent-extra")
@@ -76,6 +1887,3408 @@ This package was inspired by the concurrency libraries of Java and
 Python.")
     (license license:bsd-3)))
 
+(define-public ghc-concurrent-output
+  (package
+    (name "ghc-concurrent-output")
+    (version "1.10.9")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/concurrent-output/concurrent-output-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0mwf155w89nbbkjln7hhbn8k3f8p0ylcvgrg31cm7ijpx4499i4c"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-async" ,ghc-async)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
+       ("ghc-terminal-size" ,ghc-terminal-size)))
+    (home-page
+     "https://hackage.haskell.org/package/concurrent-output")
+    (synopsis
+     "Ungarble output from several threads or commands")
+    (description
+     "Lets multiple threads and external processes concurrently output to the
+console, without it getting all garbled up.
+
+Built on top of that is a way of defining multiple output regions, which are
+automatically laid out on the screen and can be individually updated by
+concurrent threads.  Can be used for progress displays etc.")
+    (license license:bsd-2)))
+
+(define-public ghc-conduit
+  (package
+    (name "ghc-conduit")
+    (version "1.3.0.3")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "conduit/conduit-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1sangm0qqi9dzlq95746a3kl14k8b09592a423shxjf2a0b1yx5v"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-lifted-base" ,ghc-lifted-base)
+       ("ghc-mono-traversable" ,ghc-mono-traversable)
+       ("ghc-mmorph" ,ghc-mmorph)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-silently" ,ghc-silently)
+       ("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-unliftio" ,ghc-unliftio)
+       ("ghc-unliftio-core" ,ghc-unliftio-core)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-void" ,ghc-void)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-safe" ,ghc-safe)
+       ("ghc-split" ,ghc-split)))
+    (home-page "https://github.com/snoyberg/conduit")
+    (synopsis "Streaming data library ")
+    (description
+     "The conduit package is a solution to the streaming data problem,
+allowing for production, transformation, and consumption of streams of data
+in constant memory.  It is an alternative to lazy I/O which guarantees
+deterministic resource handling, and fits in the same general solution
+space as enumerator/iteratee and pipes.")
+    (license license:expat)))
+
+(define-public ghc-conduit-algorithms
+  (package
+    (name "ghc-conduit-algorithms")
+    (version "0.0.8.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "conduit-algorithms/conduit-algorithms-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "07gx2q3d1bbfw14q41rmqg0i4m018pci10lswc0k1ij6lw7sb9fd"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-async" ,ghc-async)
+       ("ghc-bzlib-conduit" ,ghc-bzlib-conduit)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-conduit-combinators" ,ghc-conduit-combinators)
+       ("ghc-conduit-extra" ,ghc-conduit-extra)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-lzma-conduit" ,ghc-lzma-conduit)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-pqueue" ,ghc-pqueue)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-stm-conduit" ,ghc-stm-conduit)
+       ("ghc-streaming-commons" ,ghc-streaming-commons)
+       ("ghc-unliftio-core" ,ghc-unliftio-core)
+       ("ghc-vector" ,ghc-vector)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-th" ,ghc-test-framework-th)))
+    (home-page "https://github.com/luispedro/conduit-algorithms#readme")
+    (synopsis "Conduit-based algorithms")
+    (description
+     "This package provides algorithms on @code{Conduits}, including higher
+level asynchronous processing and some other utilities.")
+    (license license:expat)))
+
+(define-public ghc-conduit-combinators
+  (package
+    (name "ghc-conduit-combinators")
+    (version "1.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "conduit-combinators-" version "/"
+                           "conduit-combinators-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1lz70vwp4y4lpsivxl0cshq7aq3968rh48r6rjvpyaj2l0bdj5wp"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-conduit" ,ghc-conduit)
+              ("ghc-conduit-extra" ,ghc-conduit-extra)
+              ("ghc-transformers-base" ,ghc-transformers-base)
+              ("ghc-primitive" ,ghc-primitive)
+              ("ghc-vector" ,ghc-vector)
+              ("ghc-void" ,ghc-void)
+              ("ghc-mwc-random" ,ghc-mwc-random)
+              ("ghc-unix-compat" ,ghc-unix-compat)
+              ("ghc-base16-bytestring" ,ghc-base16-bytestring)
+              ("ghc-base64-bytestring" ,ghc-base64-bytestring)
+              ("ghc-resourcet" ,ghc-resourcet)
+              ("ghc-monad-control" ,ghc-monad-control)
+              ("ghc-chunked-data" ,ghc-chunked-data)
+              ("ghc-mono-traversable" ,ghc-mono-traversable)))
+    (native-inputs `(("ghc-hspec" ,ghc-hspec)
+                     ("ghc-silently" ,ghc-silently)
+                     ("ghc-safe" ,ghc-safe)
+                     ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/snoyberg/mono-traversable")
+    (synopsis "Commonly used conduit functions, for both chunked and
+unchunked data")
+    (description "This Haskell package provides a replacement for Data.Conduit.List,
+as well as a convenient Conduit module.")
+    (license license:expat)))
+
+(define-public ghc-conduit-extra
+  (package
+    (name "ghc-conduit-extra")
+    (version "1.3.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "conduit-extra/conduit-extra-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0jaj350vv6mbb26gdwcqz4gwzfzrjydv5pis2da49wz1npbakcfw"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-conduit" ,ghc-conduit)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-typed-process" ,ghc-typed-process)
+       ("ghc-async" ,ghc-async)
+       ("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-blaze-builder" ,ghc-blaze-builder)
+       ("ghc-network" ,ghc-network)
+       ("ghc-primitive" ,ghc-primitive)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-streaming-commons" ,ghc-streaming-commons)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-bytestring-builder" ,ghc-bytestring-builder)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (native-inputs
+     `(("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/snoyberg/conduit")
+    (synopsis "Conduit adapters for common libraries")
+    (description
+     "The @code{conduit} package itself maintains relative small dependencies.
+The purpose of this package is to collect commonly used utility functions
+wrapping other library dependencies, without depending on heavier-weight
+dependencies.  The basic idea is that this package should only depend on
+@code{haskell-platform} packages and @code{conduit}.")
+    (license license:expat)))
+
+(define-public ghc-configurator
+  (package
+    (name "ghc-configurator")
+    (version "0.3.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "configurator/configurator-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1d1iq1knwiq6ia5g64rw5hqm6dakz912qj13r89737rfcxmrkfbf"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-unix-compat" ,ghc-unix-compat)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
+    (home-page "http://github.com/bos/configurator")
+    (synopsis "Configuration management")
+    (description
+     "This package provides a configuration management library for programs
+and daemons.  The features include:
+
+@enumerate
+@item Automatic, dynamic reloading in response to modifications to
+  configuration files.
+@item A simple, but flexible, configuration language, supporting several of
+  the most commonly needed types of data, along with interpolation of strings
+  from the configuration or the system environment (e.g. @code{$(HOME)}).
+@item Subscription-based notification of changes to configuration properties.
+@item An @code{import} directive allows the configuration of a complex
+  application to be split across several smaller files, or common configuration
+  data to be shared across several applications.
+@end enumerate\n")
+    (license license:bsd-3)))
+
+(define-public ghc-connection
+  (package
+    (name "ghc-connection")
+    (version "0.2.8")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "connection/connection-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "1swkb9w5vx9ph7x55y51dc0srj2z27nd9ibgn8c0qcl6hx7g9cbh"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-byteable" ,ghc-byteable)
+       ("ghc-data-default-class" ,ghc-data-default-class)
+       ("ghc-network" ,ghc-network)
+       ("ghc-tls" ,ghc-tls)
+       ("ghc-socks" ,ghc-socks)
+       ("ghc-x509" ,ghc-x509)
+       ("ghc-x509-store" ,ghc-x509-store)
+       ("ghc-x509-system" ,ghc-x509-system)
+       ("ghc-x509-validation" ,ghc-x509-validation)))
+    (home-page "https://github.com/vincenthz/hs-connection")
+    (synopsis "Simple and easy network connections API")
+    (description
+     "This package provides a simple network library for all your connection
+needs.  It provides a very simple API to create sockets to a destination with
+the choice of SSL/TLS, and SOCKS.")
+    (license license:bsd-3)))
+
+(define-public ghc-constraints
+  (package
+    (name "ghc-constraints")
+    (version "0.10.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/constraints/constraints-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1xy3vv78jxc17hm0z7qqspxjwv7l2jbcbj670yrl2f053qkfr02q"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-hashable" ,ghc-hashable)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/ekmett/constraints/")
+    (synopsis "Constraint manipulation")
+    (description
+     "GHC 7.4 gave us the ability to talk about @code{ConstraintKinds}.
+They stopped crashing the compiler in GHC 7.6.  This package provides
+a vocabulary for working with them.")
+    (license license:bsd-3)))
+
+(define-public ghc-contravariant
+  (package
+    (name "ghc-contravariant")
+    (version "1.4.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/contravariant/contravariant-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1vfhk8c5cxmmakx7rflap1ipkx5q0j5vnlrcz7yz6y53kxhksgf9"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-void" ,ghc-void)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-statevar" ,ghc-statevar)
+       ("ghc-semigroups" ,ghc-semigroups)))
+    (home-page
+     "https://github.com/ekmett/contravariant/")
+    (synopsis "Contravariant functors")
+    (description "Contravariant functors for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-contravariant-extras
+  (package
+    (name "ghc-contravariant-extras")
+    (version "0.3.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "contravariant-extras-" version "/"
+                           "contravariant-extras-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0gg62ccl94kvh7mnvdq09pifqxjx2kgs189si90nmg44bafj7a9n"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-tuple-th" ,ghc-tuple-th)
+       ("ghc-contravariant" ,ghc-contravariant)
+       ("ghc-base-prelude" ,ghc-base-prelude)
+       ("ghc-semigroups" ,ghc-semigroups)))
+    (home-page "https://github.com/nikita-volkov/contravariant-extras")
+    (synopsis "Extras for the @code{ghc-contravariant} Haskell package")
+    (description "This Haskell package provides extras for the
+@code{ghc-contravariant} package.")
+    (license license:expat)))
+
+(define-public ghc-convertible
+  (package
+    (name "ghc-convertible")
+    (version "1.1.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/convertible/"
+                           "convertible-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0v18ap1mccnndgxmbfgyjdicg8jlss01bd5fq8a576dr0h4sgyg9"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-old-time" ,ghc-old-time)
+       ("ghc-old-locale" ,ghc-old-locale)))
+    (home-page "https://hackage.haskell.org/package/convertible")
+    (synopsis "Typeclasses and instances for converting between types")
+    (description
+     "This package provides a typeclass with a single function that is
+designed to help convert between different types: numeric values, dates and
+times, and the like.  The conversions perform bounds checking and return a
+pure @code{Either} value.  This means that you need not remember which specific
+function performs the conversion you desire.")
+    (license license:bsd-3)))
+
+(define-public ghc-data-accessor
+  (package
+    (name "ghc-data-accessor")
+    (version "0.2.2.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/data-accessor/data-accessor-"
+             version ".tar.gz"))
+       (sha256
+        (base32 "1vf2g1gac3rm32g97rl0fll51m88q7ry4m6khnl5j47qsmx24r9l"))))
+    (build-system haskell-build-system)
+    (home-page "https://www.haskell.org/haskellwiki/Record_access")
+    (synopsis
+     "Haskell utilities for accessing and manipulating fields of records")
+    (description "This package provides Haskell modules for accessing and
+manipulating fields of records.")
+    (license license:bsd-3)))
+
+(define-public ghc-data-accessor-transformers
+  (package
+    (name "ghc-data-accessor-transformers")
+    (version "0.2.1.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/data-accessor-transformers/"
+             "data-accessor-transformers-" version ".tar.gz"))
+       (sha256
+        (base32 "0yp030vafbpddl27m606aibbbr5ar5j5bsv4bksscz3cq4yq5j10"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-data-accessor" ,ghc-data-accessor)))
+    (home-page "https://www.haskell.org/haskellwiki/Record_access")
+    (synopsis "Use Accessor to access state in transformers State monad")
+    (description "This package provides Haskell modules to allow use of
+Accessor to access state in transformers State monad.")
+    (license license:bsd-3)))
+
+(define-public ghc-data-default
+  (package
+    (name "ghc-data-default")
+    (version "0.7.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/data-default/data-default-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32 "04d5n8ybmcxba9qb6h389w9zfq1lvj81b82jh6maqp6pkhkmvydh"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-data-default-class"
+        ,ghc-data-default-class)
+       ("ghc-data-default-instances-base"
+        ,ghc-data-default-instances-base)
+       ("ghc-data-default-instances-containers"
+        ,ghc-data-default-instances-containers)
+       ("ghc-data-default-instances-dlist"
+        ,ghc-data-default-instances-dlist)
+       ("ghc-data-default-instances-old-locale"
+        ,ghc-data-default-instances-old-locale)))
+    (home-page "https://hackage.haskell.org/package/data-default")
+    (synopsis "Types with default values")
+    (description
+     "This package defines a class for types with a default value, and
+provides instances for types from the base, containers, dlist and old-locale
+packages.")
+    (license license:bsd-3)))
+
+(define-public ghc-data-default-class
+  (package
+    (name "ghc-data-default-class")
+    (version "0.1.2.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/data-default-class/"
+             "data-default-class-" version ".tar.gz"))
+       (sha256
+        (base32 "0miyjz8d4jyvqf2vp60lyfbnflx6cj2k8apmm9ly1hq0y0iv80ag"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/data-default-class")
+    (synopsis "Types with default values")
+    (description
+     "This package defines a class for types with default values.")
+    (license license:bsd-3)))
+
+(define-public ghc-data-default-instances-base
+  (package
+    (name "ghc-data-default-instances-base")
+    (version "0.1.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/"
+             "data-default-instances-base/"
+             "data-default-instances-base-" version ".tar.gz"))
+       (sha256
+        (base32 "0ym1sw3ssdzzifxxhh76qlv8kkmb2iclc158incv1dklyr9y8kw4"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-data-default-class" ,ghc-data-default-class)))
+    (home-page "https://hackage.haskell.org/package/data-default-instances-base")
+    (synopsis "Default instances for types in base")
+    (description
+     "This package provides default instances for types from the base
+package.")
+    (license license:bsd-3)))
+
+(define-public ghc-data-default-instances-containers
+  (package
+    (name "ghc-data-default-instances-containers")
+    (version "0.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/"
+             "data-default-instances-containers/"
+             "data-default-instances-containers-" version ".tar.gz"))
+       (sha256
+        (base32 "06h8xka031w752a7cjlzghvr8adqbl95xj9z5zc1b62w02phfpm5"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-data-default-class" ,ghc-data-default-class)))
+    (home-page "https://hackage.haskell.org/package/data-default-instances-containers")
+    (synopsis "Default instances for types in containers")
+    (description "Provides default instances for types from the containers
+package.")
+    (license license:bsd-3)))
+
+(define-public ghc-data-default-instances-dlist
+  (package
+    (name "ghc-data-default-instances-dlist")
+    (version "0.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/"
+             "data-default-instances-dlist/"
+             "data-default-instances-dlist-" version ".tar.gz"))
+       (sha256
+        (base32 "0narkdqiprhgayjiawrr4390h4rq4pl2pb6mvixbv2phrc8kfs3x"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-data-default-class" ,ghc-data-default-class)
+       ("ghc-dlist" ,ghc-dlist)))
+    (home-page "https://hackage.haskell.org/package/data-default-instances-dlist")
+    (synopsis "Default instances for types in dlist")
+    (description "Provides default instances for types from the dlist
+package.")
+    (license license:bsd-3)))
+
+(define-public ghc-data-default-instances-old-locale
+  (package
+    (name "ghc-data-default-instances-old-locale")
+    (version "0.0.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (string-append
+              "https://hackage.haskell.org/package/"
+              "data-default-instances-old-locale/"
+              "data-default-instances-old-locale-" version ".tar.gz"))
+        (sha256
+          (base32 "00h81i5phib741yj517p8mbnc48myvfj8axzsw44k34m48lv1lv0"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-data-default-class" ,ghc-data-default-class)
+       ("ghc-old-locale" ,ghc-old-locale)))
+    (home-page
+      "https://hackage.haskell.org/package/data-default-instances-old-locale")
+    (synopsis "Default instances for types in old-locale")
+    (description "Provides Default instances for types from the old-locale
+  package.")
+    (license license:bsd-3)))
+
+(define-public ghc-data-hash
+  (package
+    (name "ghc-data-hash")
+    (version "0.2.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/data-hash"
+                           "/data-hash-" version ".tar.gz"))
+       (sha256
+        (base32 "1ghbqvc48gf9p8wiy71hdpaj7by3b9cw6wgwi3qqz8iw054xs5wi"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://hackage.haskell.org/package/data-hash")
+    (synopsis "Combinators for building fast hashing functions")
+    (description
+     "This package provides combinators for building fast hashing functions.
+It includes hashing functions for all basic Haskell98 types.")
+    (license license:bsd-3)))
+
+(define-public ghc-data-ordlist
+  (package
+    (name "ghc-data-ordlist")
+    (version "0.4.7.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/data-ordlist/data-ordlist-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "03a9ix1fcx08viwv2jg5ndw1qbkydyyrmjvqr9wasmcik9x1wv3g"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/data-ordlist")
+    (synopsis "Set and bag operations on ordered lists")
+    (description
+     "This module provides set and multiset operations on ordered lists.")
+    (license license:bsd-3)))
+
+(define-public ghc-deepseq-generics
+  (package
+    (name "ghc-deepseq-generics")
+    (version "0.2.0.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "deepseq-generics/deepseq-generics-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "17bwghc15mc9pchfd1w46jh2p3wzc86aj6a537wqwxn08rayzcxh"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("2" "1pnidf8w8x0w5fsqgv8hhrw07slmhxwy5x4fikgk0bd6k76aqicb")))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
+    (home-page "https://github.com/hvr/deepseq-generics")
+    (synopsis "Generic RNF implementation")
+    (description
+     "This package provides a @code{GHC.Generics}-based
+@code{Control.DeepSeq.Generics.genericRnf} function which can be used for
+providing an @code{rnf} implementation.")
+    (license license:bsd-3)))
+
+(define-public ghc-descriptive
+  (package
+    (name "ghc-descriptive")
+    (version "0.9.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/descriptive/descriptive-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0y5693zm2kvqjilybbmrcv1g6n6x2p6zjgi0k0axjw1sdhh1g237"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-bifunctors" ,ghc-bifunctors)
+       ("ghc-scientific" ,ghc-scientific)
+       ("ghc-vector" ,ghc-vector)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-hspec" ,ghc-hspec)))
+    (home-page
+     "https://github.com/chrisdone/descriptive")
+    (synopsis
+     "Self-describing consumers/parsers: forms, cmd-line args, JSON, etc.")
+    (description
+     "This package provides datatypes and functions for creating consumers
+and parsers with useful semantics.")
+    (license license:bsd-3)))
+
+(define-public ghc-diff
+  (package
+    (name "ghc-diff")
+    (version "0.3.4")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "Diff/Diff-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0bqcdvhxx8dmqc3793m6axg813wv9ldz2j37f1wygbbrbbndmdvp"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://hub.darcs.net/sterlingclover/Diff")
+    (synopsis "O(ND) diff algorithm in Haskell")
+    (description
+     "This package provides an implementation of the standard diff algorithm,
+and utilities for pretty printing.")
+    (license license:bsd-3)))
+
+(define-public ghc-disk-free-space
+  (package
+    (name "ghc-disk-free-space")
+    (version "0.1.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "disk-free-space/disk-free-space-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "07rqj8k1vh3cykq9yidpjxhgh1f7vgmjs6y1nv5kq2217ff4yypi"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/redneb/disk-free-space")
+    (synopsis "Retrieve information about disk space usage")
+    (description "A cross-platform library for retrieving information about
+disk space usage.")
+    (license license:bsd-3)))
+
+(define-public ghc-distributive
+  (package
+    (name "ghc-distributive")
+    (version "0.5.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/distributive/distributive-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0y566r97sfyvhsmd4yxiz4ns2mqgwf5bdbp56wgxl6wlkidq0wwi"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("6" "06bd38rf31yrvvy989r44pm0id3dsxwcp6nxg7wk6ccj3n2b8rzk")))
+    (inputs
+     `(("ghc-tagged" ,ghc-tagged)
+       ("ghc-base-orphans" ,ghc-base-orphans)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-generic-deriving" ,ghc-generic-deriving)))
+    (native-inputs
+     `(("cabal-doctest" ,cabal-doctest)
+       ("ghc-doctest" ,ghc-doctest)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/ekmett/distributive/")
+    (synopsis "Distributive functors for Haskell")
+    (description "This package provides distributive functors for Haskell.
+Dual to @code{Traversable}.")
+    (license license:bsd-3)))
+
+(define-public ghc-dlist
+  (package
+    (name "ghc-dlist")
+    (version "0.8.0.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/dlist/dlist-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32 "0yirrh0s6acjy9hhvf5fqg2d6q5y6gm9xs04v6w1imndh1xqdwdc"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/spl/dlist")
+    (synopsis "Difference lists")
+    (description
+     "Difference lists are a list-like type supporting O(1) append.  This is
+particularly useful for efficient logging and pretty printing (e.g. with the
+Writer monad), where list append quickly becomes too expensive.")
+    (license license:bsd-3)))
+
+(define-public ghc-doctemplates
+  (package
+    (name "ghc-doctemplates")
+    (version "0.2.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "doctemplates/doctemplates-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1gyckfg3kgvzhxw14i7iwrw0crygvsp86sy53bbr1yn7bxbgn33b"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-blaze-markup" ,ghc-blaze-markup)
+       ("ghc-blaze-html" ,ghc-blaze-html)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-scientific" ,ghc-scientific)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)))
+    (home-page "https://github.com/jgm/doctemplates#readme")
+    (synopsis "Pandoc-style document templates")
+    (description
+     "This package provides a simple text templating system used by pandoc.")
+    (license license:bsd-3)))
+
+(define-public ghc-doctest
+  (package
+    (name "ghc-doctest")
+    (version "0.16.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/doctest/doctest-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0hkccch65s3kp0b36h7bqhilnpi4bx8kngncm7ma9vbd3dwacjdv"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f))          ; FIXME: missing test framework
+    (inputs
+     `(("ghc-syb" ,ghc-syb)
+       ("ghc-paths" ,ghc-paths)
+       ("ghc-base-compat" ,ghc-base-compat)
+       ("ghc-code-page" ,ghc-code-page)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-stringbuilder" ,ghc-stringbuilder)
+       ("ghc-silently" ,ghc-silently)
+       ("ghc-setenv" ,ghc-setenv)))
+    (home-page
+     "https://github.com/sol/doctest#readme")
+    (synopsis "Test interactive Haskell examples")
+    (description "The doctest program checks examples in source code comments.
+It is modeled after doctest for Python, see
+@uref{https://docs.python.org/library/doctest.html, the Doctest website}.")
+    (license license:expat)))
+
+(define-public ghc-double-conversion
+  (package
+    (name "ghc-double-conversion")
+    (version "2.0.2.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "double-conversion/double-conversion-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0sx2kc1gw72mjvd8vph8bbjw5whfxfv92rsdhjg1c0al75rf3ka4"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://github.com/bos/double-conversion")
+    (synopsis "Fast conversion between double precision floating point and text")
+    (description
+     "This package provides a library that performs fast, accurate conversion
+between double precision floating point and text.")
+    (license license:bsd-3)))
+
+(define-public ghc-easy-file
+  (package
+    (name "ghc-easy-file")
+    (version "0.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/easy-file/easy-file-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0zmlcz723051qpn8l8vi51c5rx1blwrw4094jcshkmj8p9r2xxaj"))))
+    (build-system haskell-build-system)
+    (home-page
+     "https://github.com/kazu-yamamoto/easy-file")
+    (synopsis "File handling library for Haskell")
+    (description "This library provides file handling utilities for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-easyplot
+  (package
+    (name "ghc-easyplot")
+    (version "1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/easyplot/easyplot-"
+             version ".tar.gz"))
+       (sha256
+        (base32 "18kndgvdj2apjpfga6fp7m16y1gx8zrwp3c5vfj03sx4v6jvciqk"))))
+    (build-system haskell-build-system)
+    (propagated-inputs `(("gnuplot" ,gnuplot)))
+    (arguments
+     `(#:phases (modify-phases %standard-phases
+                  (add-after 'unpack 'fix-setup-suffix
+                    (lambda _ (rename-file "Setup.lhs" "Setup.hs") #t)))))
+    (home-page "https://hub.darcs.net/scravy/easyplot")
+    (synopsis "Haskell plotting library based on gnuplot")
+    (description "This package provides a plotting library for
+Haskell, using gnuplot for rendering.")
+    (license license:expat)))
+
+(define-public ghc-echo
+  (package
+    (name "ghc-echo")
+    (version "0.1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/echo/echo-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1vw5ykpwhr39wc0hhcgq3r8dh59zq6ib4zxbz1qd2wl21wqhfkvh"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("1" "0br8wfiybcw5hand4imiw0i5hacdmrax1dv8g95f35gazffbx42l")))
+    (home-page "https://github.com/RyanGlScott/echo")
+    (synopsis "Echo terminal input portably")
+    (description "The @code{base} library exposes the @code{hGetEcho} and
+@code{hSetEcho} functions for querying and setting echo status, but
+unfortunately, neither function works with MinTTY consoles on Windows.
+This library provides an alternative interface which works with both
+MinTTY and other consoles.")
+    (license license:bsd-3)))
+
+(define-public ghc-edisonapi
+  (package
+    (name "ghc-edisonapi")
+    (version "1.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/EdisonAPI"
+                           "/EdisonAPI-" version ".tar.gz"))
+       (sha256
+        (base32 "0vmmlsj8ggbpwx6fkf5fvb6jp0zpx6iba6b28m80lllr2p8bi8wm"))))
+    (build-system haskell-build-system)
+    (home-page "http://rwd.rdockins.name/edison/home/")
+    (synopsis "Library of efficient, purely-functional data structures (API)")
+    (description
+     "Edison is a library of purely functional data structures written by
+Chris Okasaki.  It is named after Thomas Alva Edison and for the mnemonic
+value EDiSon (Efficient Data Structures).  Edison provides several families of
+abstractions, each with multiple implementations.  The main abstractions
+provided by Edison are: Sequences such as stacks, queues, and dequeues;
+Collections such as sets, bags and heaps; and Associative Collections such as
+finite maps and priority queues where the priority and element are distinct.")
+    (license license:expat)))
+
+(define-public ghc-edisoncore
+  (package
+    (name "ghc-edisoncore")
+    (version "1.3.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/EdisonCore"
+                           "/EdisonCore-" version ".tar.gz"))
+       (sha256
+        (base32 "0fgj5iwiv3v2gdgx7kjcr15dcs4x1kvmjspp3p99wyhh0x6h3ikk"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-edisonapi" ,ghc-edisonapi)))
+    (home-page "http://rwd.rdockins.name/edison/home/")
+    (synopsis "Library of efficient, purely-functional data structures")
+    (description
+     "This package provides the core Edison data structure implementations,
+including multiple sequence, set, bag, and finite map concrete implementations
+with various performance characteristics.")
+    (license license:expat)))
+
+(define-public ghc-edit-distance
+  (package
+    (name "ghc-edit-distance")
+    (version "0.2.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/edit-distance"
+                           "/edit-distance-" version ".tar.gz"))
+       (sha256
+        (base32 "0jkca97zyv23yyilp3jydcrzxqhyk27swhzh82llvban5zp8b21y"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "edit-distance.cabal"
+               (("QuickCheck >= 2\\.4 && <2\\.9")
+                "QuickCheck >= 2.4 && < 2.12")))))))
+    (inputs
+     `(("ghc-random" ,ghc-random)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://github.com/phadej/edit-distance")
+    (synopsis "Levenshtein and restricted Damerau-Levenshtein edit distances")
+    (description
+     "This package provides optimized functions to determine the edit
+distances for fuzzy matching, including Levenshtein and restricted
+Damerau-Levenshtein algorithms.")
+    (license license:bsd-3)))
+
+(define-public ghc-either
+  (package
+    (name "ghc-either")
+    (version "5.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "either-" version "/"
+                           "either-" version ".tar.gz"))
+       (sha256
+        (base32
+         "064hjfld7dkzs78sy30k5qkiva3hx24rax6dvzz5ygr2c0zypdkc"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-bifunctors" ,ghc-bifunctors)
+              ("ghc-exceptions" ,ghc-exceptions)
+              ("ghc-free" ,ghc-free)
+              ("ghc-monad-control" ,ghc-monad-control)
+              ("ghc-manodrandom" ,ghc-monadrandom)
+              ("ghc-mmorph" ,ghc-mmorph)
+              ("ghc-profunctors" ,ghc-profunctors)
+              ("ghc-semigroups" ,ghc-semigroups)
+              ("ghc-semigroupoids" ,ghc-semigroupoids)
+              ("ghc-transformers-base" ,ghc-transformers-base)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://github.com/ekmett/either")
+    (synopsis "Provides an either monad transformer for Haskell")
+    (description "This Haskell package provides an either monad transformer.")
+    (license license:bsd-3)))
+
+(define-public ghc-email-validate
+  (package
+    (name "ghc-email-validate")
+    (version "2.3.2.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/"
+             "email-validate/email-validate-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0chgylvc8xmhp933rdbmpg5sv4y7yg2h6kbf0ip1dzmbd5p55pa5"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-doctest" ,ghc-doctest)))
+    (home-page
+     "https://github.com/Porges/email-validate-hs")
+    (synopsis "Email address validator for Haskell")
+    (description
+     "This Haskell package provides a validator that can validate an email
+address string against RFC 5322.")
+    (license license:bsd-3)))
+
+(define-public ghc-enclosed-exceptions
+  (package
+    (name "ghc-enclosed-exceptions")
+    (version "1.0.3")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "enclosed-exceptions/enclosed-exceptions-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "1fghjj7nkiddrf03ks8brjpr5x25yi9fs7xg6adbi4mc2gqr6vdg"))))
+    (build-system haskell-build-system)
+    ;; FIXME: one of the tests blocks forever:
+    ;; "thread blocked indefinitely in an MVar operation"
+    (arguments '(#:tests? #f))
+    (inputs
+     `(("ghc-lifted-base" ,ghc-lifted-base)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-async" ,ghc-async)
+       ("ghc-transformers-base" ,ghc-transformers-base)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/jcristovao/enclosed-exceptions")
+    (synopsis "Catch all exceptions from within an enclosed computation")
+    (description
+     "This library implements a technique to catch all exceptions raised
+within an enclosed computation, while remaining responsive to (external)
+asynchronous exceptions.")
+    (license license:expat)))
+
+(define-public ghc-equivalence
+  (package
+    (name "ghc-equivalence")
+    (version "0.3.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/equivalence"
+                           "/equivalence-" version ".tar.gz"))
+       (sha256
+        (base32 "0a85bdyyvjqs5z4kfhhf758210k9gi9dv42ik66a3jl0z7aix8kx"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-stmonadtrans" ,ghc-stmonadtrans)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://github.com/pa-ba/equivalence")
+    (synopsis "Maintaining an equivalence relation implemented as union-find")
+    (description
+     "This is an implementation of Tarjan's Union-Find algorithm (Robert E.@:
+Tarjan.  \"Efficiency of a Good But Not Linear Set Union Algorithm\",JACM
+22(2), 1975) in order to maintain an equivalence relation.  This
+implementation is a port of the @code{union-find} package using the @code{ST}
+monad transformer (instead of the IO monad).")
+    (license license:bsd-3)))
+
+(define-public ghc-erf
+  (package
+    (name "ghc-erf")
+    (version "2.0.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "erf-" version "/"
+                           "erf-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0dxk2r32ajmmc05vaxcp0yw6vgv4lkbmh8jcshncn98xgsfbgw14"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/erf")
+    (synopsis "The error function, erf, and related functions for Haskell")
+    (description "This Haskell library provides a type class for the
+error function, erf, and related functions.  Instances for Float and
+Double.")
+    (license license:bsd-3)))
+
+(define-public ghc-errorcall-eq-instance
+  (package
+    (name "ghc-errorcall-eq-instance")
+    (version "0.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "errorcall-eq-instance/errorcall-eq-instance-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0hqw82m8bbrxy5vgdwb83bhzdx070ibqrm9rshyja7cb808ahijm"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-base-orphans" ,ghc-base-orphans)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "http://hackage.haskell.org/package/errorcall-eq-instance")
+    (synopsis "Orphan Eq instance for ErrorCall")
+    (description
+     "Prior to @code{base-4.7.0.0} there was no @code{Eq} instance for @code{ErrorCall}.
+This package provides an orphan instance.")
+    (license license:expat)))
+
+(define-public ghc-errors
+  (package
+    (name "ghc-errors")
+    (version "2.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "errors-" version "/"
+                           "errors-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0x8znwn31qcx6kqx99wp7bc86kckfb39ncz3zxvj1s07kxlfawk7"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-unexceptionalio" ,ghc-unexceptionalio)
+       ("ghc-safe" ,ghc-safe)))
+    (home-page "https://github.com/gabriel439/haskell-errors-library")
+    (synopsis "Error handling library for Haskell")
+    (description "This library encourages an error-handling style that
+directly uses the type system, rather than out-of-band exceptions.")
+    (license license:bsd-3)))
+
+(define-public ghc-esqueleto
+  (let ((version "2.5.3")
+        (revision "1")
+        (commit "b81e0d951e510ebffca03c5a58658ad884cc6fbd"))
+    (package
+      (name "ghc-esqueleto")
+      (version (git-version version revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/bitemyapp/esqueleto")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "0lz1qxms7cfg5p3j37inlych0r2fwhm8xbarcys3df9m7jy9nixa"))))
+      (build-system haskell-build-system)
+      (arguments
+       `(#:haddock? #f  ; Haddock reports an internal error.
+         #:phases
+         (modify-phases %standard-phases
+           ;; This package normally runs tests for the MySQL, PostgreSQL, and
+           ;; SQLite backends.  Since we only have Haskell packages for
+           ;; SQLite, we remove the other two test suites.  FIXME: Add the
+           ;; other backends and run all three test suites.
+           (add-before 'configure 'remove-non-sqlite-test-suites
+             (lambda _
+               (use-modules (ice-9 rdelim))
+               (with-atomic-file-replacement "esqueleto.cabal"
+                 (lambda (in out)
+                   (let loop ((line (read-line in 'concat)) (deleting? #f))
+                     (cond
+                      ((eof-object? line) #t)
+                      ((string-every char-set:whitespace line)
+                       (unless deleting? (display line out))
+                       (loop (read-line in 'concat) #f))
+                      ((member line '("test-suite mysql\n"
+                                      "test-suite postgresql\n"))
+                       (loop (read-line in 'concat) #t))
+                      (else
+                       (unless deleting? (display line out))
+                       (loop (read-line in 'concat) deleting?)))))))))))
+      (inputs
+       `(("ghc-blaze-html" ,ghc-blaze-html)
+         ("ghc-conduit" ,ghc-conduit)
+         ("ghc-monad-logger" ,ghc-monad-logger)
+         ("ghc-persistent" ,ghc-persistent)
+         ("ghc-resourcet" ,ghc-resourcet)
+         ("ghc-tagged" ,ghc-tagged)
+         ("ghc-unliftio" ,ghc-unliftio)
+         ("ghc-unordered-containers" ,ghc-unordered-containers)))
+      (native-inputs
+       `(("ghc-hspec" ,ghc-hspec)
+         ("ghc-persistent-sqlite" ,ghc-persistent-sqlite)
+         ("ghc-persistent-template" ,ghc-persistent-template)))
+      (home-page "https://github.com/bitemyapp/esqueleto")
+      (synopsis "Type-safe embedded domain specific language for SQL queries")
+      (description "This library provides a type-safe embedded domain specific
+language (EDSL) for SQL queries that works with SQL backends as provided by
+@code{ghc-persistent}.  Its language closely resembles SQL, so you don't have
+to learn new concepts, just new syntax, and it's fairly easy to predict the
+generated SQL and optimize it for your backend.")
+      (license license:bsd-3))))
+
+(define-public ghc-exactprint
+  (package
+    (name "ghc-exactprint")
+    (version "0.5.6.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/"
+             "ghc-exactprint/ghc-exactprint-" version ".tar.gz"))
+       (sha256
+        (base32
+         "141k6qiys0m0r4br7ikp4i546vs3xcil9cwglzcdfcbnb5nj1z87"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-paths" ,ghc-paths)
+       ("ghc-syb" ,ghc-syb)
+       ("ghc-free" ,ghc-free)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-diff" ,ghc-diff)
+       ("ghc-silently" ,ghc-silently)
+       ("ghc-filemanip" ,ghc-filemanip)))
+    (home-page
+     "http://hackage.haskell.org/package/ghc-exactprint")
+    (synopsis "ExactPrint for GHC")
+    (description
+     "Using the API Annotations available from GHC 7.10.2, this library
+provides a means to round-trip any code that can be compiled by GHC, currently
+excluding @file{.lhs} files.")
+    (license license:bsd-3)))
+
+(define-public ghc-exceptions
+  (package
+    (name "ghc-exceptions")
+    (version "0.10.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/exceptions/exceptions-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1ms9zansv0pwzwdjncvx4kf18lnkjy2p61hvjhvxmjx5bqp93p8y"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (inputs
+     `(("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (home-page "https://github.com/ekmett/exceptions/")
+    (synopsis "Extensible optionally-pure exceptions")
+    (description "This library provides extensible optionally-pure exceptions
+for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-executable-path
+  (package
+    (name "ghc-executable-path")
+    (version "0.0.3.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "executable-path/executable-path-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "0vxwmnsvx13cawcyhbyljkds0l1vr996ijldycx7nj0asjv45iww"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/executable-path")
+    (synopsis "Find out the full path of the executable")
+    (description
+     "The documentation of @code{System.Environment.getProgName} says that
+\"However, this is hard-to-impossible to implement on some non-Unix OSes, so
+instead, for maximum portability, we just return the leafname of the program
+as invoked.\" This library tries to provide the missing path.")
+    (license license:public-domain)))
+
+(define-public ghc-extensible-exceptions
+  (package
+    (name "ghc-extensible-exceptions")
+    (version "0.1.1.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "extensible-exceptions/extensible-exceptions-"
+                           version ".tar.gz"))
+       (sha256
+        (base32 "1273nqws9ij1rp1bsq5jc7k2jxpqa0svawdbim05lf302y0firbc"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/extensible-exceptions")
+    (synopsis "Extensible exceptions for Haskell")
+    (description
+     "This package provides extensible exceptions for both new and old
+versions of GHC (i.e., < 6.10).")
+    (license license:bsd-3)))
+
+(define-public ghc-extra
+  (package
+    (name "ghc-extra")
+    (version "1.6.9")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/extra/extra-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0xxcpb00pgwi9cmy6a7ghh6rblxry42p8pz5ssfgj20fs1xwzj1b"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-clock" ,ghc-clock)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/ndmitchell/extra")
+    (synopsis "Extra Haskell functions")
+    (description "This library provides extra functions for the standard
+Haskell libraries.  Most functions are simple additions, filling out missing
+functionality.  A few functions are available in later versions of GHC, but
+this package makes them available back to GHC 7.2.")
+    (license license:bsd-3)))
+
+(define-public ghc-fail
+  (package
+    (name "ghc-fail")
+    (version "4.9.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/fail/fail-"
+                           version ".tar.gz"))
+       (sha256
+        (base32 "18nlj6xvnggy61gwbyrpmvbdkq928wv0wx2zcsljb52kbhddnp3d"))))
+    (build-system haskell-build-system)
+    (arguments `(#:haddock? #f)) ; Package contains no documentation.
+    (home-page "https://prime.haskell.org/wiki/Libraries/Proposals/MonadFail")
+    (synopsis "Forward-compatible MonadFail class")
+    (description
+     "This package contains the @code{Control.Monad.Fail} module providing the
+@uref{https://prime.haskell.org/wiki/Libraries/Proposals/MonadFail, MonadFail}
+class that became available in
+@uref{https://hackage.haskell.org/package/base-4.9.0.0, base-4.9.0.0} for
+older @code{base} package versions.  This package turns into an empty package
+when used with GHC versions which already provide the
+@code{Control.Monad.Fail} module.")
+    (license license:bsd-3)))
+
+(define-public ghc-fast-logger
+  (package
+    (name "ghc-fast-logger")
+    (version "2.4.11")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/fast-logger/fast-logger-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1ad2vq4nifdxshqk9yrmghqizhkgybfz134kpr6padglb2mxxrdv"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-auto-update" ,ghc-auto-update)
+       ("ghc-easy-file" ,ghc-easy-file)
+       ("ghc-unix-time" ,ghc-unix-time)))
+    (native-inputs
+     `(("hspec-discover" ,hspec-discover)
+       ("ghc-hspec" ,ghc-hspec)))
+    (home-page "https://hackage.haskell.org/package/fast-logger")
+    (synopsis "Fast logging system")
+    (description "This library provides a fast logging system for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-feed
+  (package
+    (name "ghc-feed")
+    (version "1.0.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "feed/feed-" version ".tar.gz"))
+       (sha256
+        (base32
+         "05rgg7x1984mgfhkmz792xj8lhwjgznixhygzr8blf517lns2nck"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("4" "0baavcavm3ywykcr9cm07aqr7sna98jba2n68lyn3kany8ri214d")))
+    (inputs
+     `(("ghc-base-compat" ,ghc-base-compat)
+       ("ghc-old-locale" ,ghc-old-locale)
+       ("ghc-old-time" ,ghc-old-time)
+       ("ghc-safe" ,ghc-safe)
+       ("ghc-time-locale-compat" ,ghc-time-locale-compat)
+       ("ghc-utf8-string" ,ghc-utf8-string)
+       ("ghc-xml-conduit" ,ghc-xml-conduit)
+       ("ghc-xml-types" ,ghc-xml-types)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
+    (home-page "https://github.com/bergmark/feed")
+    (synopsis "Haskell package for handling various syndication formats")
+    (description "This Haskell package includes tools for generating and
+consuming feeds in both RSS (Really Simple Syndication) and Atom format.")
+    (license license:bsd-3)))
+
+(define-public ghc-fgl
+  (package
+    (name "ghc-fgl")
+    (version "5.6.0.0")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/fgl/fgl-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1i6cp4b3w7sjk7y1dq3fh6bci2sm5h3lnbbaw9ln19nwncg2wwll"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "fgl.cabal"
+               (("QuickCheck >= 2\\.8 && < 2\\.10")
+                "QuickCheck >= 2.8 && < 2.12")
+               (("hspec >= 2\\.1 && < 2\\.5")
+                "hspec >= 2.1 && < 2.6")))))))
+    (inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://web.engr.oregonstate.edu/~erwig/fgl/haskell")
+    (synopsis
+     "Martin Erwig's Functional Graph Library")
+    (description "The functional graph library, FGL, is a collection of type
+and function definitions to address graph problems.  The basis of the library
+is an inductive definition of graphs in the style of algebraic data types that
+encourages inductive, recursive definitions of graph algorithms.")
+    (license license:bsd-3)))
+
+(define-public ghc-fgl-arbitrary
+  (package
+    (name "ghc-fgl-arbitrary")
+    (version "0.2.0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/fgl-arbitrary/fgl-arbitrary-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0ln1szgfy8fa78l3issq4fx3aqnnd54w3cb4wssrfi48vd5rkfjm"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "fgl-arbitrary.cabal"
+               (("QuickCheck >= 2\\.3 && < 2\\.10")
+                "QuickCheck >= 2.3 && < 2.12")
+               (("hspec >= 2\\.1 && < 2\\.5")
+                "hspec >= 2.1 && < 2.6")))))))
+    (inputs
+     `(("ghc-fgl" ,ghc-fgl)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)))
+    (home-page "https://hackage.haskell.org/package/fgl-arbitrary")
+    (synopsis "QuickCheck support for fgl")
+    (description
+     "Provides Arbitrary instances for fgl graphs to avoid adding a
+QuickCheck dependency for fgl whilst still making the instances
+available to others.  Also available are non-fgl-specific functions
+for generating graph-like data structures.")
+    (license license:bsd-3)))
+
+(define-public ghc-file-embed
+  (package
+    (name "ghc-file-embed")
+    (version "0.0.10.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/file-embed/"
+                           "file-embed-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0lj164cnzqyd487mli91nnr7137a4h4qsasfwsnsh77sx12fpk9k"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/snoyberg/file-embed")
+    (synopsis "Use Template Haskell to embed file contents directly")
+    (description
+     "This package allows you to use Template Haskell to read a file or all
+the files in a directory, and turn them into @code{(path, bytestring)} pairs
+embedded in your Haskell code.")
+    (license license:bsd-3)))
+
+(define-public ghc-filemanip
+  (package
+    (name "ghc-filemanip")
+    (version "0.3.6.3")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "filemanip/filemanip-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0ilqr8jv41zxcj5qyicg29m8s30b9v70x6f9h2h2rw5ap8bxldl8"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-unix-compat" ,ghc-unix-compat)))
+    (home-page "https://github.com/bos/filemanip")
+    (synopsis "File and directory manipulation for Haskell")
+    (description
+     "This package provides a Haskell library for working with files and
+directories.  It includes code for pattern matching, finding files, modifying
+file contents, and more.")
+    (license license:bsd-3)))
+
+(define-public ghc-findbin
+  (package
+    (name "ghc-findbin")
+    (version "0.0.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/FindBin/FindBin-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "197xvn05yysmibm1p5wzxfa256lvpbknr5d1l2ws6g40w1kpk717"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/audreyt/findbin")
+    (synopsis "Get the absolute path of the running program")
+    (description
+     "This module locates the full directory of the running program, to allow
+the use of paths relative to it.  FindBin supports invocation of Haskell
+programs via \"ghci\", via \"runhaskell/runghc\", as well as compiled as
+an executable.")
+    (license license:bsd-3)))
+
+(define-public ghc-fingertree
+  (package
+    (name "ghc-fingertree")
+    (version "0.1.4.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/fingertree/fingertree-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "192fyzv0pn1437wdpqg1l80rswkk4rw3w61r4bq7dhv354bdqy4p"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://hackage.haskell.org/package/fingertree")
+    (synopsis "Generic finger-tree structure")
+    (description "This library provides finger trees, a general sequence
+representation with arbitrary annotations, for use as a base for
+implementations of various collection types.  It includes examples, as
+described in section 4 of Ralf Hinze and Ross Paterson, \"Finger trees: a
+simple general-purpose data structure\".")
+    (license license:bsd-3)))
+
+(define-public ghc-fixed
+  (package
+    (name "ghc-fixed")
+    (version "0.2.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/fixed/fixed-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1qhmwx8iqshns0crmr9d2f8hm65jxbcp3dvv0c39v34ra7if3a94"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/ekmett/fixed")
+    (synopsis "Signed 15.16 precision fixed point arithmetic")
+    (description
+     "This package provides functions for signed 15.16 precision fixed point
+arithmetic.")
+    (license license:bsd-3)))
+
+(define-public ghc-fmlist
+  (package
+    (name "ghc-fmlist")
+    (version "0.9.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/fmlist/fmlist-"
+         version ".tar.gz"))
+       (sha256
+        (base32
+         "02868865hqm189h5wjd916abvqwkhbrx5b0119s1dwp70ifvbi4g"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/sjoerdvisscher/fmlist")
+    (synopsis "FoldMap lists")
+    (description "FoldMap lists are lists represented by their
+@code{foldMap} function.  FoldMap lists have @math{O(1)} cons, snoc and
+append, just like DLists, but other operations might have favorable
+performance characteristics as well.  These wild claims are still
+completely unverified though.")
+    (license license:bsd-3)))
+
+(define-public ghc-foldl
+  (package
+    (name "ghc-foldl")
+    (version "1.4.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "foldl-" version "/"
+                           "foldl-" version ".tar.gz"))
+       (sha256
+        (base32
+         "13n0ca3hw5jzqf6rxsdbhbwkn61a9zlm13f0f205s60j3sc72jzk"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-mwc-randam" ,ghc-mwc-random)
+              ("ghc-primitive" ,ghc-primitive)
+              ("ghc-vector" ,ghc-vector)
+              ("ghc-unordered-containers" ,ghc-unordered-containers)
+              ("ghc-hashable" ,ghc-hashable)
+              ("ghc-contravariant" ,ghc-contravariant)
+              ("ghc-semigroups" ,ghc-semigroups)
+              ("ghc-profunctors" ,ghc-profunctors)
+              ("ghc-semigroupoids" ,ghc-semigroupoids)
+              ("ghc-comonad" ,ghc-comonad)
+              ("ghc-vector-builder" ,ghc-vector-builder)))
+    (home-page "https://github.com/Gabriel439/Haskell-Foldl-Library")
+    (synopsis "Composable, streaming, and efficient left folds for Haskell")
+    (description "This Haskell library provides strict left folds that stream
+in constant memory, and you can combine folds using @code{Applicative} style
+to derive new folds.  Derived folds still traverse the container just once
+and are often as efficient as hand-written folds.")
+    (license license:bsd-3)))
+
+(define-public ghc-foundation
+  (package
+    (name "ghc-foundation")
+    (version "0.0.21")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "foundation/foundation-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1q43y8wfj0wf9gdq2kzphwjwq6m5pvryy1lqgk954aq5z3ks1lsf"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-basement" ,ghc-basement)))
+    (home-page "https://github.com/haskell-foundation/foundation")
+    (synopsis "Alternative prelude with batteries and no dependencies")
+    (description
+     "This package provides a custom prelude with no dependencies apart from
+the base package.
+
+Foundation has the following goals:
+
+@enumerate
+@item provide a base like sets of modules that provide a consistent set of
+   features and bugfixes across multiple versions of GHC (unlike base).
+@item provide a better and more efficient prelude than base's prelude.
+@item be self-sufficient: no external dependencies apart from base;
+@item provide better data-types: packed unicode string by default, arrays;
+@item Numerical classes that better represent mathematical things (no more
+   all-in-one @code{Num});
+@item I/O system with less lazy IO.
+@end enumerate\n")
+    (license license:bsd-3)))
+
+(define-public ghc-free
+  (package
+    (name "ghc-free")
+    (version "5.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/free/free-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "15m3n9vhz7z3kzv1w3wlfa3x8jp4cbrkwmrcjr7jlx39iqffn1gg"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-prelude-extras" ,ghc-prelude-extras)
+       ("ghc-profunctors" ,ghc-profunctors)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-bifunctors" ,ghc-bifunctors)
+       ("ghc-comonad" ,ghc-comonad)
+       ("ghc-distributive" ,ghc-distributive)
+       ("ghc-semigroupoids" ,ghc-semigroupoids)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (home-page "https://github.com/ekmett/free/")
+    (synopsis "Unrestricted monads for Haskell")
+    (description "This library provides free monads, which are useful for many
+tree-like structures and domain specific languages.  If @code{f} is a
+@code{Functor} then the free @code{Monad} on @code{f} is the type of trees
+whose nodes are labeled with the constructors of @code{f}.  The word \"free\"
+is used in the sense of \"unrestricted\" rather than \"zero-cost\": @code{Free
+f} makes no constraining assumptions beyond those given by @code{f} and the
+definition of @code{Monad}.")
+    (license license:bsd-3)))
+
+(define-public ghc-fsnotify
+  (package
+    (name "ghc-fsnotify")
+    (version "0.3.0.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/fsnotify/"
+                    "fsnotify-" version ".tar.gz"))
+              (sha256
+               (base32
+                "19bdbz9wb9jvln6yg6qm0hz0w84bypvkxf0wjhgrgd52f9gidlny"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-async" ,ghc-async)
+       ("ghc-unix-compat" ,ghc-unix-compat)
+       ("ghc-hinotify" ,ghc-hinotify)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-random" ,ghc-random)
+       ("ghc-shelly" ,ghc-shelly)
+       ("ghc-temporary" ,ghc-temporary)))
+    (home-page "https://github.com/haskell-fswatch/hfsnotify")
+    (synopsis "Cross platform library for file change notification.")
+    (description "Cross platform library for file creation, modification, and
+deletion notification. This library builds upon existing libraries for platform
+specific Windows, Mac, and Linux file system event notification.")
+    (license license:bsd-3)))
+
+(define-public ghc-generic-deriving
+  (package
+    (name "ghc-generic-deriving")
+    (version "1.12.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/generic-deriving/generic-deriving-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1i7d6cpj9yhaqb79zays3nqchhaacacjz9bkc0zlwj73y5gvi22n"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-th-abstraction" ,ghc-th-abstraction)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://hackage.haskell.org/package/generic-deriving")
+    (synopsis "Generalise the deriving mechanism to arbitrary classes")
+    (description "This package provides functionality for generalising the
+deriving mechanism in Haskell to arbitrary classes.")
+    (license license:bsd-3)))
+
+(define-public ghc-generics-sop
+  (package
+    (name "ghc-generics-sop")
+    (version "0.3.2.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "generics-sop-" version "/"
+                           "generics-sop-" version ".tar.gz"))
+       (sha256
+        (base32
+         "168v62i845jh9jbfaz3ldz8svz4wmzq9mf2vhb7pxlnbkk8fqq1h"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (home-page "https://github.com/well-typed/generics-sop")
+    (synopsis "Generic Programming using True Sums of Products for Haskell")
+    (description "This Haskell package supports the definition of generic
+functions.  Datatypes are viewed in a uniform, structured way: the choice
+between constructors is represented using an n-ary sum, and the arguments of
+each constructor are represented using an n-ary product.")
+    (license license:bsd-3)))
+
+(define-public ghc-geniplate-mirror
+  (package
+    (name "ghc-geniplate-mirror")
+    (version "0.7.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package"
+                           "/geniplate-mirror"
+                           "/geniplate-mirror-" version ".tar.gz"))
+       (sha256
+        (base32 "1y0m0bw5zpm1y1y6d9qmxj3swl8j8hlw1shxbr5awycf6k884ssb"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/danr/geniplate")
+    (synopsis "Use Template Haskell to generate Uniplate-like functions")
+    (description
+     "Use Template Haskell to generate Uniplate-like functions.  This is a
+maintained mirror of the @uref{https://hackage.haskell.org/package/geniplate,
+geniplate} package, written by Lennart Augustsson.")
+    (license license:bsd-3)))
+
+(define-public ghc-genvalidity
+  (package
+    (name "ghc-genvalidity")
+    (version "0.5.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/genvalidity/genvalidity-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "17ykq38j9a2lzir6dqz5jgy6ndaafrpkhqhcg96c5ppg7wcxaaj0"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-validity" ,ghc-validity)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)
+       ("ghc-hspec-core" ,ghc-hspec-core)))
+    (home-page
+     "https://github.com/NorfairKing/validity")
+    (synopsis
+     "Testing utilities for the @code{validity} library")
+    (description
+     "This package provides testing utilities that are useful in conjunction
+with the @code{Validity} typeclass.")
+    (license license:expat)))
+
+(define-public ghc-genvalidity-property
+  (package
+    (name "ghc-genvalidity-property")
+    (version "0.2.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/"
+             "genvalidity-property/genvalidity-property-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0cjw5i2pydidda9bnp6x37ylhxdk9g874x5sadr6sscg5kq85a1b"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-genvalidity" ,ghc-genvalidity)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)
+       ("ghc-validity" ,ghc-validity)))
+    (native-inputs `(("ghc-doctest" ,ghc-doctest)))
+    (home-page
+     "https://github.com/NorfairKing/validity")
+    (synopsis
+     "Standard properties for functions on @code{Validity} types")
+    (description
+     "This package supplements the @code{Validity} typeclass with standard
+properties for functions operating on them.")
+    (license license:expat)))
+
+(define-public ghc-gitrev
+  (package
+    (name "ghc-gitrev")
+    (version "1.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/gitrev/gitrev-"
+                           version ".tar.gz"))
+       (sha256
+        (base32 "0cl3lfm6k1h8fxp2vxa6ihfp4v8igkz9h35iwyq2frzm4kdn96d8"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-base-compat" ,ghc-base-compat)))
+    (home-page "https://github.com/acfoltzer/gitrev")
+    (synopsis "Compile git revision info into Haskell projects")
+    (description
+     "This package provides some handy Template Haskell splices for including
+the current git hash and branch in the code of your project.  This is useful
+for including in panic messages, @command{--version} output, or diagnostic
+info for more informative bug reports.")
+    (license license:bsd-3)))
+
+(define-public ghc-glob
+  (package
+    (name "ghc-glob")
+    (version "0.9.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "Glob-" version "/"
+                           "Glob-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1rbwcq9w9951qsnp13vqcm9r01yax2yh1wk8s4zxa3ckk9717iwg"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-dlist" ,ghc-dlist)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "http://iki.fi/matti.niemenmaa/glob/")
+    (synopsis "Haskell library matching glob patterns against file paths")
+    (description "This package provides a Haskell library for @dfn{globbing}:
+matching patterns against file paths.")
+    (license license:bsd-3)))
+
+(define-public ghc-gluraw
+  (package
+    (name "ghc-gluraw")
+    (version "2.0.0.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/GLURaw/GLURaw-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1i2xi35n5z0d372px9mh6cyhgg1m0cfaiy3fnspkf6kbn9fgsqxq"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-openglraw" ,ghc-openglraw)))
+    (home-page "https://www.haskell.org/haskellwiki/Opengl")
+    (synopsis "Raw Haskell bindings GLU")
+    (description "GLURaw is a raw Haskell binding for the GLU 1.3 OpenGL
+utility library.  It is basically a 1:1 mapping of GLU's C API, intended as a
+basis for a nicer interface.")
+    (license license:bsd-3)))
+
+(define-public ghc-glut
+  (package
+    (name "ghc-glut")
+    (version "2.7.0.14")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/GLUT/GLUT-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "01i162fly4q1751fp60lgkzlb8kr0qqbvmxj74zc6skb19qggy2w"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-statevar" ,ghc-statevar)
+       ("ghc-opengl" ,ghc-opengl)
+       ("ghc-openglraw" ,ghc-openglraw)
+       ("freeglut" ,freeglut)))
+    (home-page "https://www.haskell.org/haskellwiki/Opengl")
+    (synopsis "Haskell bindings for the OpenGL Utility Toolkit")
+    (description "This library provides Haskell bindings for the OpenGL
+Utility Toolkit, a window system-independent toolkit for writing OpenGL
+programs.")
+    (license license:bsd-3)))
+
+(define-public ghc-gnuplot
+  (package
+    (name "ghc-gnuplot")
+    (version "0.5.5.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/gnuplot/gnuplot-"
+             version ".tar.gz"))
+       (sha256
+        (base32 "1mlppnc13ygjzmf6ldydys4wvy35yb3xjwwfgf9rbi7nfcqjr6mn"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-temporary" ,ghc-temporary)
+       ("ghc-utility-ht" ,ghc-utility-ht)
+       ("ghc-data-accessor-transformers" ,ghc-data-accessor-transformers)
+       ("ghc-data-accessor" ,ghc-data-accessor)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("gnuplot" ,gnuplot)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'fix-path-to-gnuplot
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let ((gnuplot (assoc-ref inputs "gnuplot")))
+               (substitute* "os/generic/Graphics/Gnuplot/Private/OS.hs"
+                 (("(gnuplotName = ).*$" all cmd)
+                  (string-append cmd "\"" gnuplot "/bin/gnuplot\"")))))))))
+    (home-page "https://www.haskell.org/haskellwiki/Gnuplot")
+    (synopsis "2D and 3D plots using gnuplot")
+    (description "This package provides a Haskell module for creating 2D and
+3D plots using gnuplot.")
+    (license license:bsd-3)))
+
+(define-public ghc-graphviz
+  (package
+    (name "ghc-graphviz")
+    (version "2999.20.0.2")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "graphviz/graphviz-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0kj7ap0gnliviq2p8lscw1m06capnsa90vpvcys24nqy5nw2wrp7"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-colour" ,ghc-colour)
+       ("ghc-dlist" ,ghc-dlist)
+       ("ghc-fgl" ,ghc-fgl)
+       ("ghc-fgl-arbitrary" ,ghc-fgl-arbitrary)
+       ("ghc-polyparse" ,ghc-polyparse)
+       ("ghc-temporary" ,ghc-temporary)
+       ("ghc-wl-pprint-text" ,ghc-wl-pprint-text)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("graphviz" ,graphviz)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://hackage.haskell.org/package/graphviz")
+    (synopsis "Bindings to Graphviz for graph visualisation")
+    (description
+     "This library provides bindings for the Dot language used by
+the @uref{https://graphviz.org/, Graphviz} suite of programs for
+visualising graphs, as well as functions to call those programs.
+Main features of the graphviz library include:
+
+@enumerate
+@item Almost complete coverage of all Graphviz attributes and syntax
+@item Support for specifying clusters
+@item The ability to use a custom node type
+@item Functions for running a Graphviz layout tool with all specified output types
+@item Generate and parse Dot code with two options: strict and liberal
+@item Functions to convert FGL graphs and other graph-like data structures
+@item Round-trip support for passing an FGL graph through Graphviz to augment node
+and edge labels with positional information, etc.
+@end enumerate\n")
+    (license license:bsd-3)))
+
+(define-public ghc-gtk2hs-buildtools
+  (package
+    (name "ghc-gtk2hs-buildtools")
+    (version "0.13.4.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "gtk2hs-buildtools/gtk2hs-buildtools-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0yg6xmylgpylmnh5g33qwwn5x9bqckdvvv4czqzd9vrr12lnnghg"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-random" ,ghc-random)
+       ("ghc-hashtables" ,ghc-hashtables)))
+    (native-inputs
+     `(("ghc-alex" ,ghc-alex)
+       ("ghc-happy" ,ghc-happy)))
+    (home-page "http://projects.haskell.org/gtk2hs/")
+    (synopsis "Tools to build the Gtk2Hs suite of user interface libraries")
+    (description
+     "This package provides a set of helper programs necessary to build the
+Gtk2Hs suite of libraries. These tools include a modified c2hs binding tool
+that is used to generate FFI declarations, a tool to build a type hierarchy
+that mirrors the C type hierarchy of GObjects found in glib, and a generator
+for signal declarations that are used to call back from C to Haskell. These
+tools are not needed to actually run Gtk2Hs programs.")
+    (license license:gpl2)))
+
+(define-public ghc-hackage-security
+  (package
+    (name "ghc-hackage-security")
+    (version "0.5.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "hackage-security/hackage-security-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "08bwawc7ramgdh54vcly2m9pvfchp0ahhs8117jajni6x4bnx66v"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:tests? #f)) ; Tests fail because of framework updates.
+    (inputs
+     `(("ghc-base16-bytestring" ,ghc-base16-bytestring)
+       ("ghc-base64-bytestring" ,ghc-base64-bytestring)
+       ("ghc-cryptohash-sha256" ,ghc-cryptohash-sha256)
+       ("ghc-ed25519" ,ghc-ed25519)
+       ("ghc-network" ,ghc-network)
+       ("ghc-network-uri" ,ghc-network-uri)
+       ("ghc-tar" ,ghc-tar)
+       ("ghc-zlib" ,ghc-zlib)))
+    (native-inputs
+     `(("ghc-network-uri" ,ghc-network-uri)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-tar" ,ghc-tar)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-temporary" ,ghc-temporary)
+       ("ghc-zlib" ,ghc-zlib)))
+    (home-page "https://github.com/haskell/hackage-security")
+    (synopsis "Hackage security library")
+    (description "This Hackage security library provides both server and
+client utilities for securing @uref{http://hackage.haskell.org/, the
+Hackage package server}.  It is based on
+@uref{http://theupdateframework.com/, The Update Framework}, a set of
+recommendations developed by security researchers at various universities
+in the US as well as developers on the @uref{https://www.torproject.org/,
+Tor project}.")
+    (license license:bsd-3)))
+
+(define-public ghc-haddock
+  (package
+    (name "ghc-haddock")
+    (version "2.19.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/haddock/haddock-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1g1j9j0hf2yhyyh0gwz6bzbvfvliqz9x8a8hnkmwghm7w3xa6sb7"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         ;; There are four test suites that require the ghc-haddock-test
+         ;; package, which no longer builds with GHC 8.4.3.  This phase
+         ;; removes these four test suites from the Cabal file, so that we
+         ;; do not need ghc-haddock-test as an input.
+         (add-before 'configure 'remove-haddock-test-test-suites
+           (lambda _
+             (use-modules (ice-9 rdelim))
+             (with-atomic-file-replacement "haddock.cabal"
+               (lambda (in out)
+                 (let loop ((line (read-line in 'concat)) (deleting? #f))
+                   (cond
+                    ((eof-object? line) #t)
+                    ((string-every char-set:whitespace line)
+                     (unless deleting? (display line out))
+                     (loop (read-line in 'concat) #f))
+                    ((member line '("test-suite html-test\n"
+                                    "test-suite hypsrc-test\n"
+                                    "test-suite latex-test\n"
+                                    "test-suite hoogle-test\n"))
+                     (loop (read-line in 'concat) #t))
+                    (else
+                     (unless deleting? (display line out))
+                     (loop (read-line in 'concat) deleting?)))))))))))
+    (inputs `(("ghc-haddock-api" ,ghc-haddock-api)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)))
+    (home-page "https://www.haskell.org/haddock/")
+    (synopsis
+     "Documentation-generation tool for Haskell libraries")
+    (description
+     "Haddock is a documentation-generation tool for Haskell libraries.")
+    (license license:bsd-3)))
+
+(define-public ghc-haddock-api
+  (package
+    (name "ghc-haddock-api")
+    (version "2.19.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/haddock-api/haddock-api-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0c6i7sljp7myz25d90gyw68a90i5jcrkajkxcciikp2hjirfaas3"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "haddock-api.cabal"
+               (("Cabal           \\^>= 2\\.0\\.0")
+                "Cabal           ^>= 2.2.0")
+               (("hspec           \\^>= 2\\.4\\.4")
+                "hspec            >= 2.4.4 && < 2.6")))))))
+    (inputs
+     `(("ghc-paths" ,ghc-paths)
+       ("ghc-haddock-library" ,ghc-haddock-library)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://www.haskell.org/haddock/")
+    (synopsis "API for documentation-generation tool Haddock")
+    (description "This package provides an API to Haddock, the
+documentation-generation tool for Haskell libraries.")
+    (license license:bsd-3)))
+
+(define-public ghc-haddock-library
+  (package
+    (name "ghc-haddock-library")
+    (version "1.5.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/haddock-library/haddock-library-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1cmbg8l5xrwpliclwy3l057raypjqy0hsg1h1743ahaj8gq10b7z"))
+       (patches (search-patches
+                 "ghc-haddock-library-unbundle.patch"))
+       (modules '((guix build utils)))
+       (snippet '(begin
+                   (delete-file-recursively "vendor")
+                   #t))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'relax-test-suite-dependencies
+           (lambda _
+             (substitute* "haddock-library.cabal"
+               (("base-compat\\s*\\^>= 0\\.9\\.3") "base-compat")
+               (("hspec\\s*\\^>= 2\\.4\\.4") "hspec"))))
+         ;; The release tarball does not contain the "fixtures/examples"
+         ;; directory, which is required for testing.  In the upstream
+         ;; repository, the directory exists and is populated.  Here, we
+         ;; create an empty directory to placate the tests.
+         (add-before 'check 'add-examples-directory
+           (lambda _
+             (mkdir "fixtures/examples")
+             #t)))))
+    (native-inputs
+     `(("ghc-base-compat" ,ghc-base-compat)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-optparse-applicative" ,ghc-optparse-applicative)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-tree-diff" ,ghc-tree-diff)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://www.haskell.org/haddock/")
+    (synopsis "Library exposing some functionality of Haddock")
+    (description
+     "Haddock is a documentation-generation tool for Haskell libraries.  These
+modules expose some functionality of it without pulling in the GHC dependency.
+Please note that the API is likely to change so specify upper bounds in your
+project if you can't release often.  For interacting with Haddock itself, see
+the ‘haddock’ package.")
+    (license license:bsd-3)))
+
+(define-public ghc-half
+  (package
+    (name "ghc-half")
+    (version "0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/half/half-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "14r0nx8hm5fic9gz0ybjjw4kyc758zfgvhhwvzsshpx5caq6zch6"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/ekmett/half")
+    (synopsis "Half-precision floating-point computations")
+    (description "This library provides a half-precision floating-point
+computation library for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-happy
+  (package
+    (name "ghc-happy")
+    (version "1.19.9")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/happy/happy-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "138xpxdb7x62lpmgmb6b3v3vgdqqvqn4273jaap3mjmc2gla709y"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'skip-test-issue93
+           (lambda _
+             ;; Tests run out of memory on a system with 2GB of available RAM,
+             ;; in 'issue93.a.hs' and 'issue93.n.hs'.
+             (substitute* "tests/Makefile"
+               ((" issue93.y ") " "))
+             #t)))))
+    (home-page "https://hackage.haskell.org/package/happy")
+    (synopsis "Parser generator for Haskell")
+    (description "Happy is a parser generator for Haskell.  Given a grammar
+specification in BNF, Happy generates Haskell code to parse the grammar.
+Happy works in a similar way to the yacc tool for C.")
+    (license license:bsd-3)))
+
+(define-public ghc-hashable
+  (package
+    (name "ghc-hashable")
+    (version "1.2.7.0")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/hashable/hashable-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1gra8gq3kb7b2sd845h55yxlrfqx3ii004c6vjhga8v0b30fzdgc"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-random" ,ghc-random)))
+    (native-inputs
+     `(("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/tibbe/hashable")
+    (synopsis "Class for types that can be converted to a hash value")
+    (description
+     "This package defines a class, @code{Hashable}, for types that can be
+converted to a hash value.  This class exists for the benefit of hashing-based
+data structures.  The package provides instances for basic types and a way to
+combine hash values.")
+    (license license:bsd-3)))
+
+(define-public ghc-hashable-bootstrap
+  (package
+    (inherit ghc-hashable)
+    (name "ghc-hashable-bootstrap")
+    (arguments `(#:tests? #f))
+    (native-inputs '())
+    (properties '((hidden? #t)))))
+
+(define-public ghc-hashable-time
+  (package
+    (name "ghc-hashable-time")
+    (version "0.2.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/hashable-time/hashable-time-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0k932nyd08l3xxbh2g3n76py2f4kd9yw4s5a065vjz0xp6wjnxdm"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("1" "0rv40xkg3gj8jnqsry1gq3f5s5la6d5arg8fzkirnwdpcgha1as6")))
+    (inputs `(("ghc-hashable" ,ghc-hashable)))
+    (home-page "http://hackage.haskell.org/package/hashable-time")
+    (synopsis "Hashable instances for Data.Time")
+    (description
+     "This package provides @code{Hashable} instances for types in
+@code{Data.Time}.")
+    (license license:bsd-3)))
+
+(define-public ghc-hashtables
+  (package
+    (name "ghc-hashtables")
+    (version "1.2.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/hashtables/hashtables-"
+             version ".tar.gz"))
+       (sha256
+        (base32 "1giw9caajr07slf09j7zry9b0kvm4yj9q78zy1mawzi6gk3wglcg"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-hashable" ,ghc-hashable)
+       ("ghc-primitive" ,ghc-primitive)
+       ("ghc-vector" ,ghc-vector)))
+    (home-page "https://github.com/gregorycollins/hashtables")
+    (synopsis "Haskell Mutable hash tables in the ST monad")
+    (description "This package provides a Haskell library including a
+couple of different implementations of mutable hash tables in the ST
+monad, as well as a typeclass abstracting their common operations, and
+a set of wrappers to use the hash tables in the IO monad.")
+    (license license:bsd-3)))
+
+(define-public ghc-haskell-lexer
+  (package
+    (name "ghc-haskell-lexer")
+    (version "1.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/haskell-lexer/haskell-lexer-"
+             version ".tar.gz"))
+       (sha256
+        (base32 "1wyxd8x33x4v5vxyzkhm610pl86gbkc8y439092fr1735q9g7kfq"))))
+    (build-system haskell-build-system)
+    (home-page "http://hackage.haskell.org/package/haskell-lexer")
+    (synopsis "Fully compliant Haskell 98 lexer")
+    (description
+     "This package provides a fully compliant Haskell 98 lexer.")
+    (license license:bsd-3)))
+
+(define-public ghc-haskell-src
+  (package
+    (name "ghc-haskell-src")
+    (version "1.0.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/haskell-src/haskell-src-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1g4dj1f0j68bhn4ixfac63wjzy6gsp6kwgxryb1k5nl3i0g99d5l"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-happy" ,ghc-happy)
+       ("ghc-syb" ,ghc-syb)))
+    (home-page
+     "https://hackage.haskell.org/package/haskell-src")
+    (synopsis
+     "Support for manipulating Haskell source code")
+    (description
+     "The @code{haskell-src} package provides support for manipulating Haskell
+source code.  The package provides a lexer, parser and pretty-printer, and a
+definition of a Haskell abstract syntax tree (AST).  Common uses of this
+package are to parse or generate Haskell 98 code.")
+    (license license:bsd-3)))
+
+(define-public ghc-haskell-src-exts
+  (package
+    (name "ghc-haskell-src-exts")
+    (version "1.20.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/haskell-src-exts/haskell-src-exts-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1sm3z4v1p5yffg01ldgavz71s3bvfhjfa13k428rk14bpkl8crlz"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("cpphs" ,cpphs)
+       ("ghc-happy" ,ghc-happy)
+       ("ghc-pretty-show" ,ghc-pretty-show)))
+    (native-inputs
+     `(("ghc-smallcheck" ,ghc-smallcheck)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-smallcheck" ,ghc-tasty-smallcheck)
+       ("ghc-tasty-golden" ,ghc-tasty-golden)))
+    (home-page "https://github.com/haskell-suite/haskell-src-exts")
+    (synopsis "Library for manipulating Haskell source")
+    (description "Haskell-Source with Extensions (HSE, haskell-src-exts) is an
+extension of the standard @code{haskell-src} package, and handles most
+registered syntactic extensions to Haskell.  All extensions implemented in GHC
+are supported.  Apart from these standard extensions, it also handles regular
+patterns as per the HaRP extension as well as HSX-style embedded XML syntax.")
+    (license license:bsd-3)))
+
+(define-public ghc-haskell-src-exts-util
+  (package
+    (name "ghc-haskell-src-exts-util")
+    (version "0.2.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "haskell-src-exts-util/haskell-src-exts-util-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1803718paq89f8pdck4mb88hv2k1ah9lxzq0lgjgwi9n88ryycz8"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-data-default" ,ghc-data-default)
+       ("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-uniplate" ,ghc-uniplate)))
+    (home-page "https://github.com/pepeiborra/haskell-src-exts-util")
+    (synopsis "Helper functions for working with haskell-src-exts trees")
+    (description
+     "This package provides helper functions for working with
+@code{haskell-src-exts} trees.")
+    (license license:bsd-3)))
+
+(define-public ghc-haskell-src-meta
+  (package
+    (name "ghc-haskell-src-meta")
+    (version "0.8.0.3")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "haskell-src-meta/haskell-src-meta-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "08jq156zv4m0fjq6712n99c1jwxnpa6kj6sq8ch0r1l0a1ay6ww4"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
+       ("ghc-syb" ,ghc-syb)
+       ("ghc-th-orphans" ,ghc-th-orphans)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
+    (home-page "https://hackage.haskell.org/package/haskell-src-meta")
+    (synopsis "Parse source to template-haskell abstract syntax")
+    (description
+     "This package provides tools to parse Haskell sources to the
+template-haskell abstract syntax.")
+    (license license:bsd-3)))
+
+(define-public ghc-hasktags
+  (package
+    (name "ghc-hasktags")
+    (version "0.71.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/hasktags/hasktags-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1s2k9qrgy1jily96img2pmn7g35mwnnfiw6si3aw32jfhg5zsh1c"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-system-filepath" ,ghc-system-filepath)
+       ("ghc-optparse-applicative" ,ghc-optparse-applicative)))
+    (native-inputs
+     `(("ghc-json" ,ghc-json)
+       ("ghc-utf8-string" ,ghc-utf8-string)
+       ("ghc-microlens-platform" ,ghc-microlens-platform)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "http://github.com/MarcWeber/hasktags")
+    (synopsis "Make @code{Ctags} and @code{Etags} files for Haskell programs")
+    (description
+     "This package provides a means of generating tag files for Emacs and
+Vim.")
+    (license license:bsd-3)))
+
+(define-public ghc-hex
+  (package
+    (name "ghc-hex")
+    (version "0.1.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "hex-" version "/"
+                           "hex-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1v31xiaivrrn0q2jz8919wvkjplv1kxna5ajhsj701fqxm1i5vhj"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/hex")
+    (synopsis "Convert strings into hexadecimal and back")
+    (description "This package provides conversion functions between
+bytestrings and their hexademical representation.")
+    (license license:bsd-3)))
+
+(define-public ghc-highlighting-kate
+  (package
+    (name "ghc-highlighting-kate")
+    (version "0.6.4")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "highlighting-kate/highlighting-kate-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "1bqv00gfmrsf0jjr4qf3lhshvfkyzmhbi3pjb6mafbnsyn2k7f6q"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-diff" ,ghc-diff)
+       ("ghc-regex-pcre-builtin" ,ghc-regex-pcre-builtin)))
+    (native-inputs
+     `(("ghc-blaze-html" ,ghc-blaze-html)
+       ("ghc-utf8-string" ,ghc-utf8-string)))
+    (home-page "https://github.com/jgm/highlighting-kate")
+    (synopsis "Syntax highlighting library")
+    (description
+     "Highlighting-kate is a syntax highlighting library with support for
+nearly one hundred languages.  The syntax parsers are automatically generated
+from @uref{https://kate-editor.org/, Kate syntax descriptions}, so any syntax
+supported by Kate can be added.  An (optional) command-line program is
+provided, along with a utility for generating new parsers from Kate XML syntax
+descriptions.")
+    (license license:gpl2+)))
+
+(define-public ghc-hindent
+  (package
+    (name "ghc-hindent")
+    (version "5.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/hindent/hindent-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0wkfik7mvqskk23kyh7ybgnlh3j9j1ym7d3ncahsbli9w654b7xg"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:modules ((guix build haskell-build-system)
+                  (guix build utils)
+                  (guix build emacs-utils))
+       #:imported-modules (,@%haskell-build-system-modules
+                           (guix build emacs-utils))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'install 'emacs-install
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((out   (assoc-ref outputs "out"))
+                    (elisp-file "elisp/hindent.el")
+                    (dest  (string-append out "/share/emacs/site-lisp"
+                                          "/guix.d/hindent-" ,version))
+                    (emacs (string-append (assoc-ref inputs "emacs")
+                                          "/bin/emacs")))
+               (make-file-writable elisp-file)
+               (emacs-substitute-variables elisp-file
+                 ("hindent-process-path"
+                  (string-append out "/bin/hindent")))
+               (install-file elisp-file dest)
+               (emacs-generate-autoloads "hindent" dest)))))))
+    (inputs
+     `(("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
+       ("ghc-monad-loops" ,ghc-monad-loops)
+       ("ghc-utf8-string" ,ghc-utf8-string)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-yaml" ,ghc-yaml)
+       ("ghc-unix-compat" ,ghc-unix-compat)
+       ("ghc-path" ,ghc-path)
+       ("ghc-path-io" ,ghc-path-io)
+       ("ghc-optparse-applicative" ,ghc-optparse-applicative)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-diff" ,ghc-diff)
+       ("emacs" ,emacs-minimal)))
+    (home-page
+     "https://github.com/commercialhaskell/hindent")
+    (synopsis "Extensible Haskell pretty printer")
+    (description
+     "This package provides automatic formatting for Haskell files.  Both a
+library and an executable.")
+    (license license:bsd-3)))
+
+(define-public ghc-hinotify
+  (package
+    (name "ghc-hinotify")
+    (version "0.3.10")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/hinotify/"
+                    "hinotify-" version ".tar.gz"))
+              (sha256
+               (base32
+                "17ax3n68a5c2ddazp86aciliskrh6znd3bnry0wcllmb6dbpsaxg"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-async" ,ghc-async)))
+    (home-page "https://github.com/kolmodin/hinotify.git")
+    (synopsis "Haskell binding to inotify")
+    (description "This library provides a wrapper to the Linux kernel's inotify
+feature, allowing applications to subscribe to notifications when a file is
+accessed or modified.")
+    (license license:bsd-3)))
+
+(define-public ghc-hmatrix
+  (package
+    (name "ghc-hmatrix")
+    (version "0.19.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/hmatrix/hmatrix-"
+             version ".tar.gz"))
+       (sha256
+        (base32 "10jd69nby29dggghcyjk6ykyr5wrn97nrv1dkpyrp0y5xm12xssj"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-random" ,ghc-random)
+       ("ghc-split" ,ghc-split)
+       ("ghc-storable-complex" ,ghc-storable-complex)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-vector" ,ghc-vector)
+       ;;("openblas" ,openblas)
+       ("lapack" ,lapack)))
+    ;; Guix's OpenBLAS is built with the flag "NO_LAPACK=1" which
+    ;; disables inclusion of the LAPACK functions.
+    ;; (arguments `(#:configure-flags '("--flags=openblas")))
+    (home-page "https://github.com/albertoruiz/hmatrix")
+    (synopsis "Haskell numeric linear algebra library")
+    (description "The HMatrix package provices a Haskell library for
+dealing with linear systems, matrix decompositions, and other
+numerical computations based on BLAS and LAPACK.")
+    (license license:bsd-3)))
+
+(define-public ghc-hmatrix-gsl
+  (package
+    (name "ghc-hmatrix-gsl")
+    (version "0.19.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/hmatrix-gsl/hmatrix-gsl-"
+             version ".tar.gz"))
+       (sha256
+        (base32 "0v6dla426x4ywaq59jm89ql1i42n39iw6z0j378xwb676v9kfxhm"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-hmatrix" ,ghc-hmatrix)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-random" ,ghc-random)
+       ("gsl" ,gsl)))
+    (native-inputs `(("pkg-config" ,pkg-config)))
+    (home-page "https://github.com/albertoruiz/hmatrix")
+    (synopsis "Haskell GSL binding")
+    (description "This Haskell library provides a purely functional
+interface to selected numerical computations, internally implemented
+using GSL.")
+    (license license:gpl3+)))
+
+(define-public ghc-hmatrix-gsl-stats
+  (package
+    (name "ghc-hmatrix-gsl-stats")
+    (version "0.4.1.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/hmatrix-gsl-stats/hmatrix-gsl-stats-"
+         version ".tar.gz"))
+       (sha256
+        (base32 "1gslgk58lzin43cvbpivhw7nrn9qyaa6qwhy1z9ypvyal5p8n3sa"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-vector" ,ghc-vector)
+       ("ghc-storable-complex" ,ghc-storable-complex)
+       ("ghc-hmatrix" ,ghc-hmatrix)
+       ("gsl" ,gsl)))
+    (native-inputs `(("pkg-config" ,pkg-config)))
+    (home-page "http://code.haskell.org/hmatrix-gsl-stats")
+    (synopsis "GSL Statistics interface for Haskell")
+    (description "This Haskell library provides a purely functional
+interface for statistics based on hmatrix and GSL.")
+    (license license:bsd-3)))
+
+(define-public ghc-hmatrix-special
+  (package
+    (name "ghc-hmatrix-special")
+    (version "0.19.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/hmatrix-special/hmatrix-special-"
+         version ".tar.gz"))
+       (sha256
+        (base32 "1mywr61kr852sbff26n9x95kswx9l4ycbv6s68qsbkh02xzqq7qz"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-hmatrix" ,ghc-hmatrix)
+       ("ghc-hmatrix-gsl" ,ghc-hmatrix-gsl)))
+    (home-page "https://github.com/albertoruiz/hmatrix")
+    (synopsis "Haskell interface to GSL special functions")
+    (description "This library provides an interface to GSL special
+functions for Haskell.")
+    (license license:gpl3+)))
+
+(define-public ghc-hostname
+  (package
+    (name "ghc-hostname")
+    (version "1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/hostname/"
+                           "hostname-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0p6gm4328946qxc295zb6vhwhf07l1fma82vd0siylnsnsqxlhwv"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/hostname")
+    (synopsis "Hostname in Haskell")
+    (description "Network.HostName is a simple package providing a means to
+determine the hostname.")
+    (license license:bsd-3)))
+
+(define-public ghc-hourglass
+  (package
+    (name "ghc-hourglass")
+    (version "0.2.12")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "hourglass/hourglass-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0jnay5j13vpz6i1rkaj3j0d9v8jfpri499xn3l7wd01f81f5ncs4"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-old-locale" ,ghc-old-locale)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
+    (home-page "https://github.com/vincenthz/hs-hourglass")
+    (synopsis "Simple time-related library for Haskell")
+    (description
+     "This is a simple time library providing a simple but powerful and
+performant API.  The backbone of the library are the @code{Timeable} and
+@code{Time} type classes.  Each @code{Timeable} instances can be converted to
+a type that has a @code{Time} instances, and thus are different
+representations of current time.")
+    (license license:bsd-3)))
+
+(define-public ghc-hpack
+  (package
+    (name "ghc-hpack")
+    (version "0.28.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/hpack/"
+                           "hpack-" version ".tar.gz"))
+       (sha256
+        (base32
+         "18w0h76jdp3mk9vin8da9iz3cwhcxmw787xy8wlh8bxcpcr16q5r"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-bifunctors" ,ghc-bifunctors)
+       ("ghc-cryptonite" ,ghc-cryptonite)
+       ("ghc-glob" ,ghc-glob)
+       ("ghc-http-client" ,ghc-http-client)
+       ("ghc-http-client-tls" ,ghc-http-client-tls)
+       ("ghc-http-types" ,ghc-http-types)
+       ("ghc-scientific" ,ghc-scientific)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-yaml" ,ghc-yaml)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-interpolate" ,ghc-interpolate)
+       ("ghc-mockery" ,ghc-mockery)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-temporary" ,ghc-temporary)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/sol/hpack")
+    (synopsis "Tools for an alternative Haskell package format")
+    (description
+     "Hpack is a format for Haskell packages.  It is an alternative to the
+Cabal package format and follows different design principles.  Hpack packages
+are described in a file named @code{package.yaml}.  Both @code{cabal2nix} and
+@code{stack} support @code{package.yaml} natively.  For other build tools the
+@code{hpack} executable can be used to generate a @code{.cabal} file from
+@code{package.yaml}.")
+    (license license:expat)))
+
+(define-public ghc-hs-bibutils
+  (package
+    (name "ghc-hs-bibutils")
+    (version "6.6.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/hs-bibutils/hs-bibutils-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0n2sz2zl4naspryd49ii858qkjp2lapns5a2gr8zm6vvn5sh1f0l"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-syb" ,ghc-syb)))
+    (home-page "https://hackage.haskell.org/package/hs-bibutils")
+    (synopsis "Haskell bindings to bibutils")
+    (description
+     "This package provides Haskell bindings to @code{bibutils}, a library
+that interconverts between various bibliography formats using a common
+MODS-format XML intermediate.")
+    (license license:gpl2+)))
+
+(define-public ghc-hslogger
+  (package
+    (name "ghc-hslogger")
+    (version "1.2.10")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "hslogger-" version "/" "hslogger-"
+                           version ".tar.gz"))
+       (sha256 (base32
+                "0as5gvlh6pi2gflakp695qnlizyyp059dqrhvjl4gjxalja6xjnp"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-network" ,ghc-network)
+       ("ghc-old-locale" ,ghc-old-locale)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://software.complete.org/hslogger")
+    (synopsis "Logging framework for Haskell, similar to Python's logging module")
+    (description "Hslogger lets each log message have a priority and source be
+associated with it.  The programmer can then define global handlers that route
+or filter messages based on the priority and source.  It also has a syslog
+handler built in.")
+    (license license:bsd-3)))
+
+(define-public ghc-hslua
+  (package
+    (name "ghc-hslua")
+    (version "0.9.5.2")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "hslua/hslua-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1rdvv01p214zfjh6fcqjjgqwi8y42wad6cqzhlcv5gvclzw2ck8f"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:configure-flags '("-fsystem-lua")))
+    (inputs
+     `(("lua" ,lua)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-fail" ,ghc-fail)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-expected-failure" ,ghc-tasty-expected-failure)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)))
+    (home-page "https://hackage.haskell.org/package/hslua")
+    (synopsis "Lua language interpreter embedding in Haskell")
+    (description
+     "The Scripting.Lua module is a wrapper of the Lua language interpreter as
+described in @url{https://www.lua.org/}.")
+    (license license:expat)))
+
+(define-public ghc-hslua-module-text
+  (package
+    (name "ghc-hslua-module-text")
+    (version "0.1.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "hslua-module-text/hslua-module-text-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0bcfpb1dhnxp0gr376ai4w7vczr9zrjl1r3r6w7kcxivfkwq9cxf"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("1" "0vajlsd7y6pwa08635q0cx8z5c1c55bk7fvavw7g2vmyvxqjzx6n")))
+    (inputs
+     `(("ghc-hslua" ,ghc-hslua)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
+    (home-page "https://github.com/hslua/hslua-module-text")
+    (synopsis "Lua module for text")
+    (description
+     "This package provides a UTF-8 aware subset of Lua's @code{string} module
+for Haskell.  The functions provided by this module are @code{upper},
+@code{lower}, @code{len}, @code{reverse}, and @code{sub}.")
+    (license license:expat)))
+
+(define-public ghc-http-api-data
+  (package
+    (name "ghc-http-api-data")
+    (version "0.3.8.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "http-api-data-" version "/"
+                           "http-api-data-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1cq6459b8wz6nvkvpi89dg189n5q2xdq4rdq435hf150555vmskf"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f))  ;  FIXME: Tests require QuickCheck >= 2.9
+    (inputs `(("ghc-attoparsec" ,ghc-attoparsec)
+              ("ghc-attoparsec-iso8601" ,ghc-attoparsec-iso8601)
+              ("ghc-hashable" ,ghc-hashable)
+              ("ghc-http-types" ,ghc-http-types)
+              ("ghc-time-locale-compat" ,ghc-time-locale-compat)
+              ("ghc-unordered-containers" ,ghc-unordered-containers)
+              ("ghc-uri-bytestring" ,ghc-uri-bytestring)
+              ("ghc-uuid-types" ,ghc-uuid-types)))
+    (home-page "https://github.com/fizruk/http-api-data")
+    (synopsis "Convert to/from HTTP API data like URL pieces, headers and
+query parameters")
+    (description "This Haskell package defines typeclasses used for converting
+Haskell data types to and from HTTP API data.")
+    (license license:bsd-3)))
+
+(define-public ghc-ieee754
+  (package
+    (name "ghc-ieee754")
+    (version "0.8.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/ieee754/"
+                    "ieee754-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1lcs521g9lzy9d7337vg4w7q7s8500rfqy7rcifcz6pm6yfgyb8f"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/patperry/hs-ieee754")
+    (synopsis "Utilities for dealing with IEEE floating point numbers")
+    (description "Utilities for dealing with IEEE floating point numbers,
+ported from the Tango math library; approximate and exact equality comparisons
+for general types.")
+    (license license:bsd-3)))
+
+(define-public ghc-ifelse
+  (package
+    (name "ghc-ifelse")
+    (version "0.85")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "IfElse/IfElse-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1kfx1bwfjczj93a8yqz1n8snqiq5655qgzwv1lrycry8wb1vzlwa"))))
+    (build-system haskell-build-system)
+    (home-page "http://hackage.haskell.org/package/IfElse")
+    (synopsis "Monadic control flow with anaphoric variants")
+    (description "This library provides functions for control flow inside of
+monads with anaphoric variants on @code{if} and @code{when} and a C-like
+@code{switch} function.")
+    (license license:bsd-3)))
+
+(define-public ghc-indents
+  (package
+    (name "ghc-indents")
+    (version "0.5.0.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/indents/indents-"
+                    version ".tar.gz"))
+              (sha256
+               (base32
+                "1ly3v41jacc6lrsvg4j3m5a6zs90gr8dyif5m6bf34hj1k5cgg0n"))))
+    (build-system haskell-build-system)
+    ;; This package needs an older version of tasty.
+    (arguments '(#:tests? #f))
+    (inputs
+     `(("ghc-concatenative" ,ghc-concatenative)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
+    (home-page "http://patch-tag.com/r/salazar/indents")
+    (synopsis "Indentation sensitive parser-combinators for parsec")
+    (description
+     "This library provides functions for use in parsing indentation sensitive
+contexts.  It parses blocks of lines all indented to the same level as well as
+lines continued at an indented level below.")
+    (license license:bsd-3)))
+
+(define-public ghc-inline-c
+  (package
+    (name "ghc-inline-c")
+    (version "0.6.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/inline-c/"
+                           "inline-c-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0vbfrsqsi7mdziqsnj68bsqlwbqxxhvrmy9rv6w8z18d1m8w3n6h"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-ansi-wl-pprint" ,ghc-ansi-wl-pprint)
+       ("ghc-cryptohash" ,ghc-cryptohash)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-parsers" ,ghc-parsers)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-vector" ,ghc-vector)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-raw-strings-qq" ,ghc-raw-strings-qq)
+       ("ghc-regex-posix" ,ghc-regex-posix)))
+    (home-page "http://hackage.haskell.org/package/inline-c")
+    (synopsis "Write Haskell source files including C code inline")
+    (description
+     "inline-c lets you seamlessly call C libraries and embed high-performance
+inline C code in Haskell modules.  Haskell and C can be freely intermixed in
+the same source file, and data passed to and from code in either language with
+minimal overhead.  No FFI required.")
+    (license license:expat)))
+
+(define-public ghc-inline-c-cpp
+  (package
+    (name "ghc-inline-c-cpp")
+    (version "0.2.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/inline-c-cpp/"
+                           "inline-c-cpp-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1rk7fmpkmxw9hhwr8df29kadnf0ybnwj64ggdbnsdrpfyhnkisci"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-inline-c" ,ghc-inline-c)
+       ("ghc-safe-exceptions" ,ghc-safe-exceptions)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)))
+    (home-page "https://hackage.haskell.org/package/inline-c-cpp")
+    (synopsis "Lets you embed C++ code into Haskell")
+    (description
+     "This package provides utilities to inline C++ code into Haskell using
+@code{inline-c}.")
+    (license license:expat)))
+
+(define-public ghc-integer-logarithms
+  (package
+    (name "ghc-integer-logarithms")
+    (version "1.0.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "integer-logarithms/integer-logarithms-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1wj8kgjg5bn2yrs4zh9qfjv85cx6w998j9pi39yrbv305944mb9j"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "integer-logarithms.cabal"
+               (("tasty >= 0\\.10 && < 1\\.1")
+                "tasty >= 0.10 && < 1.2")))))))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-smallcheck" ,ghc-smallcheck)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-tasty-smallcheck" ,ghc-tasty-smallcheck)))
+    (home-page "https://github.com/Bodigrim/integer-logarithms")
+    (synopsis "Integer logarithms")
+    (description
+     "This package provides the following modules:
+@code{Math.NumberTheory.Logarithms} and
+@code{Math.NumberTheory.Powers.Integer} from the @code{arithmoi} package,
+@code{GHC.Integer.Logarithms.Compat} and
+@code{Math.NumberTheory.Power.Natural}, as well as some additional functions
+in migrated modules.")
+    (license license:expat)))
+
+(define-public ghc-integer-logarithms-bootstrap
+  (package
+    (inherit ghc-integer-logarithms)
+    (name "ghc-integer-logarithms-bootstrap")
+    (arguments `(#:tests? #f))
+    (native-inputs '())
+    (properties '(hidden? #t))))
+
+(define-public ghc-interpolate
+  (package
+    (name "ghc-interpolate")
+    (version "0.2.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/interpolate/"
+                           "interpolate-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1gkaj98yz363v38fv78sqby236mp8yqwqcilx7kr2b9z0w3204bf"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-haskell-src-meta" ,ghc-haskell-src-meta)))
+    (native-inputs
+     `(("ghc-base-compat" ,ghc-base-compat)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/sol/interpolate")
+    (synopsis "String interpolation library")
+    (description "This package provides a string interpolation library for
+Haskell.")
+    (license license:expat)))
+
+(define-public ghc-intervalmap
+  (package
+    (name "ghc-intervalmap")
+    (version "0.6.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/IntervalMap/"
+                           "IntervalMap-" version ".tar.gz"))
+       (sha256
+        (base32
+         "06hin9wf1by8aqa7820fsi2339bh82184frkwz3jsb9sqa0hszcg"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "http://www.chr-breitkopf.de/comp/IntervalMap")
+    (synopsis "Containers for intervals, with efficient search")
+    (description
+     "This package provides ordered containers of intervals, with efficient
+search for all keys containing a point or overlapping an interval.  See the
+example code on the home page for a quick introduction.")
+    (license license:bsd-3)))
+
+(define-public ghc-invariant
+  (package
+    (name "ghc-invariant")
+    (version "0.5.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/invariant/invariant-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0aqj7z55632qdg45074kgn9qfdxzb0a2f8lgjzr0l0i4mm2rr37b"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-bifunctors" ,ghc-bifunctors)
+       ("ghc-comonad" ,ghc-comonad)
+       ("ghc-contravariant" ,ghc-contravariant)
+       ("ghc-profunctors" ,ghc-profunctors)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-statevar" ,ghc-statevar)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-th-abstraction" ,ghc-th-abstraction)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/nfrisby/invariant-functors")
+    (synopsis "Haskell98 invariant functors")
+    (description "Haskell98 invariant functors (also known as exponential
+functors).  For more information, see Edward Kmett's article
+@uref{http://comonad.com/reader/2008/rotten-bananas/, Rotten Bananas}.")
+    (license license:bsd-2)))
+
 (define-public ghc-io-streams
   (package
     (name "ghc-io-streams")
@@ -146,6 +5359,160 @@ about a networked peer (like remote address and port) to be propagated
 through a forwarding proxy that is configured to speak this protocol.")
     (license license:bsd-3)))
 
+(define-public ghc-iproute
+  (package
+    (name "ghc-iproute")
+    (version "1.7.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/iproute/iproute-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1vw1nm3s8vz1hqnjnqd3wh5rr4q3m2r4izn5ynhf93h9185qwqzd"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f)) ; FIXME: Tests cannot find System.ByteOrder,
+                               ; exported by ghc-byteorder.  Doctest issue.
+    (inputs
+     `(("ghc-appar" ,ghc-appar)
+       ("ghc-byteorder" ,ghc-byteorder)
+       ("ghc-network" ,ghc-network)
+       ("ghc-safe" ,ghc-safe)))
+    (home-page "https://www.mew.org/~kazu/proj/iproute/")
+    (synopsis "IP routing table")
+    (description "IP Routing Table is a tree of IP ranges to search one of
+them on the longest match base.  It is a kind of TRIE with one way branching
+removed.  Both IPv4 and IPv6 are supported.")
+    (license license:bsd-3)))
+
+(define-public ghc-iwlib
+  (package
+    (name "ghc-iwlib")
+    (version "0.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/iwlib/iwlib-"
+                           version ".tar.gz"))
+       (sha256
+        (base32 "0khmfwql4vwj55idsxmhjhrbqzfir3g9wm5lmpvnf77mm95cfpdz"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("wireless-tools" ,wireless-tools)))
+    (home-page "https://github.com/jaor/iwlib")
+    (synopsis "Haskell binding to the iw wireless networking library")
+    (description
+     "IWlib is a thin Haskell binding to the iw C library.  It provides
+information about the current wireless network connections, and adapters on
+supported systems.")
+    (license license:bsd-3)))
+
+(define-public ghc-json
+  (package
+    (name "ghc-json")
+    (version "0.9.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/json/"
+                           "json-" version ".tar.gz"))
+       (sha256
+        (base32
+         "13kkfgx58z18jphbg56jn08jn72wi3kvfndlwwx87hqwg7x1dfz6"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-syb" ,ghc-syb)))
+    (home-page "https://hackage.haskell.org/package/json")
+    (synopsis "Serializes Haskell data to and from JSON")
+    (description "This package provides a parser and pretty printer for
+converting between Haskell values and JSON.
+JSON (JavaScript Object Notation) is a lightweight data-interchange format.")
+    (license license:bsd-3)))
+
+(define-public ghc-juicypixels
+  (package
+    (name "ghc-juicypixels")
+    (version "3.2.9.5")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "JuicyPixels/JuicyPixels-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "0mf3ihr0xy2wc2wzb9a17g0n3p60x7pvm8akwpvhdy8klvs6r744"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-zlib" ,ghc-zlib)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-primitive" ,ghc-primitive)
+       ("ghc-mmap" ,ghc-mmap)))
+    (home-page "https://github.com/Twinside/Juicy.Pixels")
+    (synopsis "Picture loading and serialization library")
+    (description
+     "This library can load and store images in PNG, Bitmap, JPEG, Radiance,
+TIFF and GIF formats.")
+    (license license:bsd-3)))
+
+(define-public ghc-kan-extensions
+  (package
+    (name "ghc-kan-extensions")
+    (version "5.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/kan-extensions/kan-extensions-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1lyvyiwwh962j2nnnsqzlvp5zq6z8p3spvhmji99cjvldxc7wwkb"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-adjunctions" ,ghc-adjunctions)
+       ("ghc-comonad" ,ghc-comonad)
+       ("ghc-contravariant" ,ghc-contravariant)
+       ("ghc-distributive" ,ghc-distributive)
+       ("ghc-free" ,ghc-free)
+       ("ghc-invariant" ,ghc-invariant)
+       ("ghc-semigroupoids" ,ghc-semigroupoids)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (home-page "https://github.com/ekmett/kan-extensions/")
+    (synopsis "Kan extensions library")
+    (description "This library provides Kan extensions, Kan lifts, various
+forms of the Yoneda lemma, and (co)density (co)monads for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-language-c
+  (package
+    (name "ghc-language-c")
+    (version "0.8.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "language-c/language-c-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0sdkjj0hq8p69fcdm6ljbjkjvrsrb8a6rl5dq6dj6byj32ajrm3d"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-syb" ,ghc-syb)))
+    (native-inputs
+     `(("ghc-happy" ,ghc-happy)
+       ("ghc-alex" ,ghc-alex)))
+    (home-page "https://visq.github.io/language-c/")
+    (synopsis "Analysis and generation of C code")
+    (description
+     "Language C is a Haskell library for the analysis and generation of C code.
+It features a complete, well-tested parser and pretty printer for all of C99
+and a large set of GNU extensions.")
+    (license license:bsd-3)))
+
 (define-public ghc-language-glsl
   (package
     (name "ghc-language-glsl")
@@ -170,6 +5537,2133 @@ through a forwarding proxy that is configured to speak this protocol.")
 representation, parsing, and pretty-printing of GLSL 1.50 code.")
     (license license:bsd-3)))
 
+(define-public ghc-language-haskell-extract
+  (package
+    (name "ghc-language-haskell-extract")
+    (version "0.2.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "language-haskell-extract-" version "/"
+                           "language-haskell-extract-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1nxcs7g8a1sp91bzpy4cj6s31k5pvc3gvig04cbrggv5cvjidnhl"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-regex-posix" ,ghc-regex-posix)))
+    (home-page "https://github.com/finnsson/template-helper")
+    (synopsis "Haskell module to automatically extract functions from
+the local code")
+    (description "This package contains helper functions on top of
+Template Haskell.
+
+For example, @code{functionExtractor} extracts all functions after a
+regexp-pattern, which can be useful if you wish to extract all functions
+beginning with @code{test} (for a test framework) or all functions beginning
+with @code{wc} (for a web service).")
+    (license license:bsd-3)))
+
+(define-public ghc-lens
+  (package
+    (name "ghc-lens")
+    (version "4.16.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/lens/lens-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1im4drhbydbawd6i0jsrzpqihnmx4ywpkg7yg94ddwsw3mxwkgpm"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("2" "11h83lj5mba4grhz1qx3irz10ysm9c3k7k6i6xv2cr60q8xin3ri")))
+    (inputs
+     `(("ghc-base-orphans" ,ghc-base-orphans)
+       ("ghc-bifunctors" ,ghc-bifunctors)
+       ("ghc-distributive" ,ghc-distributive)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-free" ,ghc-free)
+       ("ghc-kan-extensions" ,ghc-kan-extensions)
+       ("ghc-parallel" ,ghc-parallel)
+       ("ghc-reflection" ,ghc-reflection)
+       ("ghc-semigroupoids" ,ghc-semigroupoids)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-call-stack" ,ghc-call-stack)
+       ("ghc-comonad" ,ghc-comonad)
+       ("ghc-contravariant" ,ghc-contravariant)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-profunctors" ,ghc-profunctors)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-void" ,ghc-void)
+       ("ghc-generic-deriving" ,ghc-generic-deriving)
+       ("ghc-nats" ,ghc-nats)
+       ("ghc-simple-reflect" ,ghc-simple-reflect)
+       ("hlint" ,hlint)))
+    (native-inputs
+     `(("cabal-doctest" ,cabal-doctest)
+       ("ghc-doctest" ,ghc-doctest)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-th" ,ghc-test-framework-th)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/ekmett/lens/")
+    (synopsis "Lenses, Folds and Traversals")
+    (description "This library provides @code{Control.Lens}.  The combinators
+in @code{Control.Lens} provide a highly generic toolbox for composing families
+of getters, folds, isomorphisms, traversals, setters and lenses and their
+indexed variants.")
+    (license license:bsd-3)))
+
+(define-public ghc-libffi
+  (package
+    (name "ghc-libffi")
+    (version "0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "libffi/libffi-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0g7jnhng3j7z5517aaqga0144aamibsbpgm3yynwyfzkq1kp0f28"))))
+    (build-system haskell-build-system)
+    (native-inputs `(("pkg-config" ,pkg-config)))
+    (inputs `(("libffi" ,libffi)))
+    (home-page "http://hackage.haskell.org/package/libffi")
+    (synopsis "Haskell binding to libffi")
+    (description
+     "A binding to libffi, allowing C functions of types only known at runtime
+to be called from Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-libmpd
+  (package
+    (name "ghc-libmpd")
+    (version "0.9.0.9")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/libmpd/libmpd-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1931m23iqb4wddpdidm4ph746zpaw41kkjzmb074j7yyfpk7x1jv"))))
+    (build-system haskell-build-system)
+    ;; Tests fail on i686.
+    ;; See https://github.com/vimus/libmpd-haskell/issues/112
+    (arguments `(#:tests? #f))
+    (inputs
+     `(("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-old-locale" ,ghc-old-locale)
+       ("ghc-data-default-class" ,ghc-data-default-class)
+       ("ghc-network" ,ghc-network)
+       ("ghc-utf8-string" ,ghc-utf8-string)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/vimus/libmpd-haskell")
+    (synopsis "Haskell client library for the Music Player Daemon")
+    (description "This package provides a pure Haskell client library for the
+Music Player Daemon.")
+    (license license:expat)))
+
+(define-public ghc-libxml
+  (package
+    (name "ghc-libxml")
+    (version "0.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/libxml/"
+                           "libxml-" version ".tar.gz"))
+       (sha256
+        (base32
+         "01zvk86kg726lf2vnlr7dxiz7g3xwi5a4ak9gcfbwyhynkzjmsfi"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("libxml2" ,libxml2)))
+    (arguments
+     `(#:configure-flags
+       `(,(string-append "--extra-include-dirs="
+                         (assoc-ref %build-inputs "libxml2")
+                         "/include/libxml2"))))
+    (home-page "https://hackage.haskell.org/package/libxml")
+    (synopsis "Haskell bindings to libxml2")
+    (description
+     "This library provides minimal Haskell binding to libxml2.")
+    (license license:bsd-3)))
+
+(define-public ghc-lifted-async
+  (package
+    (name "ghc-lifted-async")
+    (version "0.10.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/lifted-async/lifted-async-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1073r512c1x2m1v0jar9bwqg656slg7jd1jhsyj6m8awgx1l1mwf"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-async" ,ghc-async)
+       ("ghc-lifted-base" ,ghc-lifted-base)
+       ("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-constraints" ,ghc-constraints)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-expected-failure" ,ghc-tasty-expected-failure)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-th" ,ghc-tasty-th)))
+    (home-page "https://github.com/maoe/lifted-async")
+    (synopsis "Run lifted IO operations asynchronously and wait for their results")
+    (description
+     "This package provides IO operations from @code{async} package lifted to any
+instance of @code{MonadBase} or @code{MonadBaseControl}.")
+    (license license:bsd-3)))
+
+(define-public ghc-lifted-base
+  (package
+    (name "ghc-lifted-base")
+    (version "0.2.3.12")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/lifted-base/lifted-base-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1i8p8d3rkdh21bhgjjh32vd7qqjr7jq7p59qds0aw2kmargsjd61"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f)) ; FIXME: Missing testing libraries.
+    (inputs
+     `(("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://github.com/basvandijk/lifted-base")
+    (synopsis "Lifted IO operations from the base library")
+    (description "Lifted-base exports IO operations from the @code{base}
+library lifted to any instance of @code{MonadBase} or @code{MonadBaseControl}.
+Note that not all modules from @code{base} are converted yet.  The package
+includes a copy of the @code{monad-peel} test suite written by Anders
+Kaseorg.")
+    (license license:bsd-3)))
+
+(define-public ghc-linear
+  (package
+    (name "ghc-linear")
+    (version "1.20.8")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/linear/"
+                           "linear-" version ".tar.gz"))
+       (sha256
+        (base32
+         "046vkvxlb0s286qr55s0c6db0rlwbm1cmlmwhrrkqbkzhfcipgay"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-adjunctions" ,ghc-adjunctions)
+       ("ghc-base-orphans" ,ghc-base-orphans)
+       ("ghc-bytes" ,ghc-bytes)
+       ("ghc-cereal" ,ghc-cereal)
+       ("ghc-distributive" ,ghc-distributive)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-lens" ,ghc-lens)
+       ("ghc-reflection" ,ghc-reflection)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-semigroupoids" ,ghc-semigroupoids)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-void" ,ghc-void)))
+    (native-inputs
+     `(("cabal-doctest" ,cabal-doctest)
+       ("ghc-doctest" ,ghc-doctest)
+       ("ghc-simple-reflect" ,ghc-simple-reflect)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "http://github.com/ekmett/linear/")
+    (synopsis "Linear algebra library for Haskell")
+    (description
+     "This package provides types and combinators for linear algebra on free
+vector spaces.")
+    (license license:bsd-3)))
+
+(define-public ghc-listlike
+  (package
+    (name "ghc-listlike")
+    (version "4.6.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/ListLike/ListLike-"
+         version ".tar.gz"))
+       (sha256
+        (base32
+         "0m65x8yaq7q50gznln8mga2wrc8cvjx6gw9rim8s7xqcrx6y5zjh"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-vector" ,ghc-vector)
+       ("ghc-dlist" ,ghc-dlist)
+       ("ghc-fmlist" ,ghc-fmlist)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-random" ,ghc-random)
+       ("ghc-utf8-string" ,ghc-utf8-string)))
+    (home-page "https://github.com/JohnLato/listlike")
+    (synopsis "Generic support for list-like structures")
+    (description "The ListLike module provides a common interface to the
+various Haskell types that are list-like.  Predefined interfaces include
+standard Haskell lists, Arrays, ByteStrings, and lazy ByteStrings.
+Custom types can easily be made ListLike instances as well.
+
+ListLike also provides for String-like types, such as String and
+ByteString, for types that support input and output, and for types that
+can handle infinite lists.")
+    (license license:bsd-3)))
+
+(define-public ghc-logging-facade
+  (package
+    (name "ghc-logging-facade")
+    (version "0.3.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "logging-facade/logging-facade-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "0d0lwxxgd16is9aw6v3ps4r9prv3dj8xscmm45fvzq3nicjiawcf"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://hackage.haskell.org/package/logging-facade")
+    (synopsis "Simple logging abstraction that allows multiple back-ends")
+    (description
+     "This package provides a simple logging abstraction that allows multiple
+back-ends.")
+    (license license:expat)))
+
+(define-public ghc-logict
+  (package
+    (name "ghc-logict")
+    (version "0.6.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/logict/logict-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "07hnirv6snnym2r7iijlfz00b60jpy2856zvqxh989q0in7bd0hi"))))
+    (build-system haskell-build-system)
+    (home-page "http://code.haskell.org/~dolio/")
+    (synopsis "Backtracking logic-programming monad")
+    (description "This library provides a continuation-based, backtracking,
+logic programming monad.  An adaptation of the two-continuation implementation
+found in the paper \"Backtracking, Interleaving, and Terminating Monad
+Transformers\" available @uref{http://okmij.org/ftp/papers/LogicT.pdf,
+online}.")
+    (license license:bsd-3)))
+
+(define-public ghc-lzma
+  (package
+    (name "ghc-lzma")
+    (version "0.0.0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/lzma/"
+                           "lzma-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0i416gqi8j55nd1pqbkxvf3f6hn6fjys6gq98lkkxphva71j30xg"))))
+    (build-system haskell-build-system)
+    (arguments
+     '(#:tests? #f ; requires older versions of QuickCheck and tasty.
+       #:cabal-revision
+       ("3" "1sify6gnsalyp6dakfzi0mdy5jcz2kcp9jsdsgkmxd40nfzgd44m")))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (home-page "https://github.com/hvr/lzma")
+    (synopsis "LZMA/XZ compression and decompression")
+    (description
+     "This package provides a pure interface for compressing and
+decompressing LZMA streams of data represented as lazy @code{ByteString}s.  A
+monadic incremental interface is provided as well.")
+    (license license:bsd-3)))
+
+(define-public ghc-lzma-conduit
+  (package
+    (name "ghc-lzma-conduit")
+    (version "1.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/lzma-conduit/"
+                           "lzma-conduit-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0hm72da7xk9l3zxjh274yg444vf405djxqbkf3q3p2qhicmxlmg9"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-conduit" ,ghc-conduit)
+       ("ghc-lzma" ,ghc-lzma)
+       ("ghc-resourcet" ,ghc-resourcet)))
+    (native-inputs
+     `(("ghc-base-compat" ,ghc-base-compat)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/alphaHeavy/lzma-conduit")
+    (synopsis "Conduit interface for lzma/xz compression")
+    (description
+     "This package provides a @code{Conduit} interface for the LZMA
+compression algorithm used in the @code{.xz} file format.")
+    (license license:bsd-3)))
+
+(define-public ghc-markdown-unlit
+  (package
+    (name "ghc-markdown-unlit")
+    (version "0.5.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "mirror://hackage/package/markdown-unlit/"
+                    "markdown-unlit-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1gy79vr85vcp13rdjh0hz7zv6daqqffww4j0cqn2lpjjh9xhsbg7"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-base-compat" ,ghc-base-compat)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-silently" ,ghc-silently)
+       ("ghc-stringbuilder" ,ghc-stringbuilder)
+       ("ghc-temporary" ,ghc-temporary)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/sol/markdown-unlit#readme")
+    (synopsis "Literate Haskell support for Markdown")
+    (description "This package allows you to have a README.md that at the
+same time is a literate Haskell program.")
+    (license license:expat)))
+
+(define-public ghc-math-functions
+  (package
+    (name "ghc-math-functions")
+    (version "0.2.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "math-functions-" version "/"
+                           "math-functions-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1sv5vabsx332v1lpb6v3jv4zrzvpx1n7yprzd8wlcda5vsc5a6zp"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f))  ; FIXME: 1 test fails.
+    (inputs
+     `(("ghc-vector" ,ghc-vector)
+       ("ghc-vector-th-unbox" ,ghc-vector-th-unbox)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-erf" ,ghc-erf)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://github.com/bos/math-functions")
+    (synopsis "Special functions and Chebyshev polynomials for Haskell")
+    (description "This Haskell library provides implementations of
+special mathematical functions and Chebyshev polynomials.  These
+functions are often useful in statistical and numerical computing.")
+    (license license:bsd-3)))
+
+(define-public ghc-megaparsec
+  (package
+    (name "ghc-megaparsec")
+    (version "6.5.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "megaparsec/megaparsec-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "12iggy7qpf8x93jm64zf0g215xwy779bqyfyjk2bhmxqqr1yzgdy"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("4" "0ij3asi5vwlhbgwsy6nhli9a0qb7926mg809fsgyl1rnhs9fvpx1")))
+    (inputs
+     `(("ghc-case-insensitive" ,ghc-case-insensitive)
+       ("ghc-parser-combinators" ,ghc-parser-combinators)
+       ("ghc-scientific" ,ghc-scientific)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-hspec-expectations" ,ghc-hspec-expectations)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/mrkkrp/megaparsec")
+    (synopsis "Monadic parser combinators")
+    (description
+     "This is an industrial-strength monadic parser combinator library.
+Megaparsec is a feature-rich package that strikes a nice balance between
+speed, flexibility, and quality of parse errors.")
+    (license license:bsd-2)))
+
+(define-public ghc-memory
+  (package
+    (name "ghc-memory")
+    (version "0.14.16")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "memory/memory-" version ".tar.gz"))
+              (sha256
+               (base32
+                "03rbszi5d4z9rlbfv8ydrl1xf84xsh8z57g07f7j9qccn9587c3v"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-basement" ,ghc-basement)
+       ("ghc-foundation" ,ghc-foundation)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
+    (home-page "https://github.com/vincenthz/hs-memory")
+    (synopsis "Memory abstractions for Haskell")
+    (description
+     "This package provides memory abstractions, such as chunk of memory,
+polymorphic byte array management and manipulation functions.  It contains a
+polymorphic byte array abstraction and functions similar to strict ByteString,
+different type of byte array abstraction, raw memory IO operations (memory
+set, memory copy, ..) and more")
+    (license license:bsd-3)))
+
+(define-public ghc-memotrie
+  (package
+    (name "ghc-memotrie")
+    (version "0.6.9")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/MemoTrie/MemoTrie-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "157p0pi6rrq74a35mq6zkkycv4ah7xhkbrcmnkb9xf7pznw4aq0x"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-newtype-generics" ,ghc-newtype-generics)))
+    (home-page "https://github.com/conal/MemoTrie")
+    (synopsis "Trie-based memo functions")
+    (description "This package provides a functional library for creating
+efficient memo functions using tries.")
+    (license license:bsd-3)))
+
+(define-public ghc-microlens
+  (package
+    (name "ghc-microlens")
+    (version "0.4.9.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "microlens-" version "/"
+                           "microlens-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0j2nzf0vpx2anvsrg2w0vy2z4jn3kkcs2n6glkzblhn1j9piqh51"))))
+    (build-system haskell-build-system)
+    (home-page
+     "https://github.com/aelve/microlens")
+    (synopsis "Provides a tiny lens Haskell library with no dependencies")
+    (description "This Haskell package provides a lens library, just like
+@code{ghc-lens}, but smaller.  It provides essential lenses and
+traversals (like @code{_1} and @code{_Just}), as well as ones which are simply
+nice to have (like @code{each}, @code{at}, and @code{ix}), and some
+combinators (like @code{failing} and @code{singular}), but everything else is
+stripped.  As the result, this package has no dependencies.")
+    (license license:bsd-3)))
+
+(define-public ghc-microlens-ghc
+  (package
+    (name "ghc-microlens-ghc")
+    (version "0.4.9.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/microlens-ghc/microlens-ghc-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "03iwgg8zww9irv59l70c8yy7vzxir1zf66y12210xk91k5hq6jrj"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-microlens" ,ghc-microlens)))
+    (home-page "https://github.com/monadfix/microlens")
+    (synopsis "Use @code{microlens} with GHC libraries like @code{array}")
+    (description "This library provides everything that @code{microlens}
+provides plus instances to make @code{each}, @code{at}, and @code{ix}
+usable with arrays, @code{ByteString}, and containers.  This package is
+a part of the @uref{http://hackage.haskell.org/package/microlens,
+microlens} family; see the readme
+@uref{https://github.com/aelve/microlens#readme, on Github}.")
+    (license license:bsd-3)))
+
+(define-public ghc-microlens-mtl
+  (package
+    (name "ghc-microlens-mtl")
+    (version "0.1.11.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/microlens-mtl/microlens-mtl-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0l6z1gkzwcpv89bxf5vgfrjb6gq2pj7sjjc53nvi5b9alx34zryk"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-microlens" ,ghc-microlens)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (home-page "https://github.com/monadfix/microlens")
+    (synopsis
+     "@code{microlens} support for Reader/Writer/State from mtl")
+    (description
+     "This package contains functions (like @code{view} or @code{+=}) which
+work on @code{MonadReader}, @code{MonadWriter}, and @code{MonadState} from the
+mtl package.  This package is a part of the
+@uref{http://hackage.haskell.org/package/microlens, microlens} family; see the
+readme @uref{https://github.com/aelve/microlens#readme, on Github}.")
+    (license license:bsd-3)))
+
+(define-public ghc-microlens-platform
+  (package
+    (name "ghc-microlens-platform")
+    (version "0.3.10")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/"
+             "microlens-platform/microlens-platform-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1d4nhmgf9jq0ixc7qhwm7aaw3xdr0nalw58d0ydsydgf02cyazwv"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-hashable" ,ghc-hashable)
+       ("ghc-microlens" ,ghc-microlens)
+       ("ghc-microlens-ghc" ,ghc-microlens-ghc)
+       ("ghc-microlens-mtl" ,ghc-microlens-mtl)
+       ("ghc-microlens-th" ,ghc-microlens-th)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-vector" ,ghc-vector)))
+    (home-page "https://github.com/monadfix/microlens")
+    (synopsis "Feature-complete microlens")
+    (description
+     "This package exports a module which is the recommended starting point
+for using @uref{http://hackage.haskell.org/package/microlens, microlens} if
+you aren't trying to keep your dependencies minimal.  By importing
+@code{Lens.Micro.Platform} you get all functions and instances from
+@uref{http://hackage.haskell.org/package/microlens, microlens},
+@uref{http://hackage.haskell.org/package/microlens-th, microlens-th},
+@uref{http://hackage.haskell.org/package/microlens-mtl, microlens-mtl},
+@uref{http://hackage.haskell.org/package/microlens-ghc, microlens-ghc}, as
+well as instances for @code{Vector}, @code{Text}, and @code{HashMap}.  The
+minor and major versions of @code{microlens-platform} are incremented whenever
+the minor and major versions of any other @code{microlens} package are
+incremented, so you can depend on the exact version of
+@code{microlens-platform} without specifying the version of @code{microlens}
+you need.  This package is a part of the
+@uref{http://hackage.haskell.org/package/microlens, microlens} family; see the
+readme @uref{https://github.com/aelve/microlens#readme, on Github}.")
+    (license license:bsd-3)))
+
+(define-public ghc-microlens-th
+  (package
+    (name "ghc-microlens-th")
+    (version "0.4.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "microlens-th-" version "/"
+                           "microlens-th-" version ".tar.gz"))
+       (sha256
+        (base32
+         "02nj7lnl61yffi3c6wn341arxhld5r0vj6nzcb5zmqjhnqsv8c05"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-microlens" ,ghc-microlens)
+              ("ghc-th-abstraction" ,ghc-th-abstraction)))
+    (home-page
+     "https://github.com/aelve/microlens")
+    (synopsis "Automatic generation of record lenses for
+@code{ghc-microlens}")
+    (description "This Haskell package lets you automatically generate lenses
+for data types; code was extracted from the lens package, and therefore
+generated lenses are fully compatible with ones generated by lens (and can be
+used both from lens and microlens).")
+    (license license:bsd-3)))
+
+(define-public ghc-missingh
+  (package
+    (name "ghc-missingh")
+    (version "1.4.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/MissingH/"
+                           "MissingH-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0wcvgrmav480w7nf4bl14yi0jq2yzanysxwzwas9hpb28vyjlgr8"))))
+    (build-system haskell-build-system)
+    ;; Tests require the unmaintained testpack package, which depends on the
+    ;; outdated QuickCheck version 2.7, which can no longer be built with
+    ;; recent versions of GHC and Haskell libraries.
+    (arguments '(#:tests? #f))
+    (inputs
+     `(("ghc-network" ,ghc-network)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-regex-compat" ,ghc-regex-compat)
+       ("ghc-hslogger" ,ghc-hslogger)
+       ("ghc-random" ,ghc-random)
+       ("ghc-old-time" ,ghc-old-time)
+       ("ghc-old-locale" ,ghc-old-locale)))
+    (native-inputs
+     `(("ghc-errorcall-eq-instance" ,ghc-errorcall-eq-instance)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "http://software.complete.org/missingh")
+    (synopsis "Large utility library")
+    (description
+     "MissingH is a library of all sorts of utility functions for Haskell
+programmers.  It is written in pure Haskell and thus should be extremely
+portable and easy to use.")
+    (license license:bsd-3)))
+
+(define-public ghc-mmap
+  (package
+    (name "ghc-mmap")
+    (version "0.5.9")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "mmap/mmap-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1y5mk3yf4b8r6rzmlx1xqn4skaigrqnv08sqq0v7r3nbw42bpz2q"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/mmap")
+    (synopsis "Memory mapped files for Haskell")
+    (description
+     "This library provides a wrapper to @code{mmap}, allowing files or
+devices to be lazily loaded into memory as strict or lazy @code{ByteStrings},
+@code{ForeignPtrs} or plain @code{Ptrs}, using the virtual memory subsystem to
+do on-demand loading.")
+    (license license:bsd-3)))
+
+(define-public ghc-mmorph
+  (package
+    (name "ghc-mmorph")
+    (version "1.1.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/mmorph/mmorph-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1gjz1ib968lqybma7my1n19qq6cdj6a7nskrlnwy4jy9jrwzs2n9"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (home-page "https://hackage.haskell.org/package/mmorph")
+    (synopsis "Monad morphisms")
+    (description
+     "This library provides monad morphism utilities, most commonly used for
+manipulating monad transformer stacks.")
+    (license license:bsd-3)))
+
+(define-public ghc-mockery
+  (package
+    (name "ghc-mockery")
+    (version "0.3.5")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "mockery/mockery-" version ".tar.gz"))
+              (sha256
+               (base32
+                "09ypgm3z69gq8mj6y66ss58kbjnk15r8frwcwbqcfbfksfnfv8dp"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-temporary" ,ghc-temporary)
+       ("ghc-logging-facade" ,ghc-logging-facade)
+       ("ghc-base-compat" ,ghc-base-compat)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://hackage.haskell.org/package/mockery")
+    (synopsis "Support functions for automated testing")
+    (description
+     "The mockery package provides support functions for automated testing.")
+    (license license:expat)))
+
+(define-public ghc-monad-control
+  (package
+    (name "ghc-monad-control")
+    (version "1.0.2.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/monad-control"
+             "/monad-control-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1c92833gr6cadidjdp8mlznkpp8lyxl0w3y7d19y8yi3klc3843c"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (home-page "https://github.com/basvandijk/monad-control")
+    (synopsis "Monad transformers to lift control operations like exception
+catching")
+    (description "This package defines the type class @code{MonadBaseControl},
+a subset of @code{MonadBase} into which generic control operations such as
+@code{catch} can be lifted from @code{IO} or any other base monad.")
+    (license license:bsd-3)))
+
+(define-public ghc-monad-logger
+  (package
+    (name "ghc-monad-logger")
+    (version "0.3.29")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "monad-logger-" version "/"
+                           "monad-logger-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1z516s4pa9n94zf0l45mylssg07xr1d1m6zrz900p0iv3vfd07mv"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-transformers-compat" ,ghc-transformers-compat)
+              ("ghc-stm-chans" ,ghc-stm-chans)
+              ("ghc-lifted-base" ,ghc-lifted-base)
+              ("ghc-resourcet" ,ghc-resourcet)
+              ("ghc-conduit" ,ghc-conduit)
+              ("ghc-conduit-extra" ,ghc-conduit-extra)
+              ("ghc-fast-logger" ,ghc-fast-logger)
+              ("ghc-transformers-base" ,ghc-transformers-base)
+              ("ghc-monad-control" ,ghc-monad-control)
+              ("ghc-monad-loops" ,ghc-monad-loops)
+              ("ghc-blaze-builder" ,ghc-blaze-builder)
+              ("ghc-exceptions" ,ghc-exceptions)))
+    (home-page "https://github.com/kazu-yamamoto/logger")
+    (synopsis "Provides a class of monads which can log messages for Haskell")
+    (description "This Haskell package uses a monad transformer approach
+for logging.
+
+This package provides Template Haskell functions for determining source
+code locations of messages.")
+    (license license:expat)))
+
+(define-public ghc-monad-loops
+  (package
+    (name "ghc-monad-loops")
+    (version "0.4.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "monad-loops-" version "/"
+                           "monad-loops-" version ".tar.gz"))
+       (sha256
+        (base32
+         "062c2sn3hc8h50p1mhqkpyv6x8dydz2zh3ridvlfjq9nqimszaky"))))
+    (build-system haskell-build-system)
+    (native-inputs `(("ghc-tasty" ,ghc-tasty)
+                     ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
+    (home-page "https://github.com/mokus0/monad-loops")
+    (synopsis "Monadic loops for Haskell")
+    (description "This Haskell package provides some useful control
+operators for looping.")
+    (license license:public-domain)))
+
+(define-public ghc-monad-par
+  (package
+    (name "ghc-monad-par")
+    (version "0.3.4.8")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "monad-par-" version "/"
+                           "monad-par-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0ldrzqy24fsszvn2a2nr77m2ih7xm0h9bgkjyv1l274aj18xyk7q"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-abstract-par" ,ghc-abstract-par)
+              ("ghc-abstract-deque" ,ghc-abstract-deque)
+              ("ghc-monad-par-extras" ,ghc-monad-par-extras)
+              ("ghc-mwc-random" ,ghc-mwc-random)
+              ("ghc-parallel" ,ghc-parallel)))
+    (native-inputs `(("ghc-quickcheck" ,ghc-quickcheck)
+                     ("ghc-hunit" ,ghc-hunit)
+                     ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+                     ("ghc-test-framework-quickcheck2"
+                      ,ghc-test-framework-quickcheck2)
+                     ("ghc-test-framework" ,ghc-test-framework)
+                     ("ghc-test-framework-th" ,ghc-test-framework-th)))
+    (home-page "https://github.com/simonmar/monad-par")
+    (synopsis "Haskell library for parallel programming based on a monad")
+    (description "The @code{Par} monad offers an API for parallel
+programming.  The library works for parallelising both pure and @code{IO}
+computations, although only the pure version is deterministic.  The default
+implementation provides a work-stealing scheduler and supports forking tasks
+that are much lighter weight than IO-threads.")
+    (license license:bsd-3)))
+
+(define-public ghc-monad-par-extras
+  (package
+    (name "ghc-monad-par-extras")
+    (version "0.3.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "monad-par-extras-" version "/"
+                           "monad-par-extras-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0bl4bd6jzdc5zm20q1g67ppkfh6j6yn8fwj6msjayj621cck67p2"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-abstract-par" ,ghc-abstract-par)
+              ("ghc-cereal" ,ghc-cereal)
+              ("ghc-random" ,ghc-random)))
+    (home-page "https://github.com/simonmar/monad-par")
+    (synopsis "Combinators and extra features for Par monads for Haskell")
+    (description "This Haskell package provides additional data structures,
+and other added capabilities layered on top of the @code{Par} monad.")
+    (license license:bsd-3)))
+
+(define-public ghc-monadplus
+  (package
+    (name "ghc-monadplus")
+    (version "1.4.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/monadplus"
+                           "/monadplus-" version ".tar.gz"))
+       (sha256
+        (base32 "15b5320wdpmdp5slpphnc1x4rhjch3igw245dp2jxbqyvchdavin"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/monadplus")
+    (synopsis "Filtering and folding over arbitrary MonadPlus instances")
+    (description
+     "This package generalizes many common stream operations such as
+@code{filter}, @code{catMaybes} etc, enabling filtering and folding over
+arbitrary @code{MonadPlus} instances.")
+    (license license:bsd-3)))
+
+(define-public ghc-monadrandom
+  (package
+    (name "ghc-monadrandom")
+    (version "0.5.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "MonadRandom-" version "/"
+                           "MonadRandom-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0w44jl1n3kqvqaflh82l1wj3xxbhzfs3kf4m8rk7w6fgg8llmnmb"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-transformers-compat" ,ghc-transformers-compat)
+              ("ghc-primitive" ,ghc-primitive)
+              ("ghc-fail" ,ghc-fail)
+              ("ghc-random" ,ghc-random)))
+    (home-page "https://github.com/byorgey/MonadRandom")
+    (synopsis "Random-number generation monad for Haskell")
+    (description "This Haskell package provides support for computations
+which consume random values.")
+    (license license:bsd-3)))
+
+(define-public ghc-monads-tf
+  (package
+    (name "ghc-monads-tf")
+    (version "0.1.0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/monads-tf/monads-tf-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1wdhskwa6dw8qljbvwpyxj8ca6y95q2np7z4y4q6bpf4anmd5794"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/monads-tf")
+    (synopsis "Monad classes, using type families")
+    (description
+     "Monad classes using type families, with instances for various monad transformers,
+inspired by the paper 'Functional Programming with Overloading and Higher-Order
+Polymorphism', by Mark P Jones.  This package is almost a compatible replacement for
+the @code{mtl-tf} package.")
+    (license license:bsd-3)))
+
+(define-public ghc-mono-traversable
+  (package
+    (name "ghc-mono-traversable")
+    (version "1.0.9.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "mono-traversable-" version "/"
+                           "mono-traversable-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0180ks0dyvpk1r20w5jw2w2n79mjnk69n9vhspaxzlyxqgim5psa"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-unordered-containers" ,ghc-unordered-containers)
+              ("ghc-hashable" ,ghc-hashable)
+              ("ghc-vector" ,ghc-vector)
+              ("ghc-vector-algorithms" ,ghc-vector-algorithms)
+              ("ghc-split" ,ghc-split)))
+    (native-inputs `(("ghc-hspec" ,ghc-hspec)
+                     ("ghc-hunit" ,ghc-hunit)
+                     ("ghc-quickcheck" ,ghc-quickcheck)
+                     ("ghc-semigroups" ,ghc-semigroups)
+                     ("ghc-foldl" ,ghc-foldl)))
+    (home-page "https://github.com/snoyberg/mono-traversable")
+    (synopsis "Haskell classes for mapping, folding, and traversing monomorphic
+containers")
+    (description "This Haskell package provides Monomorphic variants of the
+Functor, Foldable, and Traversable typeclasses.  If you understand Haskell's
+basic typeclasses, you understand mono-traversable.  In addition to what
+you are used to, it adds on an IsSequence typeclass and has code for marking
+data structures as non-empty.")
+    (license license:expat)))
+
+(define-public ghc-murmur-hash
+  (package
+    (name "ghc-murmur-hash")
+    (version "0.1.0.9")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/murmur-hash"
+                           "/murmur-hash-" version ".tar.gz"))
+       (sha256
+        (base32 "1bb58kfnzvx3mpc0rc0dhqc1fk36nm8prd6gvf20gk6lxaadpfc9"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/nominolo/murmur-hash")
+    (synopsis "MurmurHash2 implementation for Haskell")
+    (description
+     "This package provides an implementation of MurmurHash2, a good, fast,
+general-purpose, non-cryptographic hashing function.  See
+@url{https://sites.google.com/site/murmurhash/} for details.  This
+implementation is pure Haskell, so it might be a bit slower than a C FFI
+binding.")
+    (license license:bsd-3)))
+
+(define-public ghc-mwc-random
+  (package
+    (name "ghc-mwc-random")
+    (version "0.13.6.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "mwc-random-" version "/"
+                           "mwc-random-" version ".tar.gz"))
+       (sha256
+        (base32
+         "05j7yh0hh9nxic3dijmzv44kc6gzclvamdph7sq7w19wq57k6pq6"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-primitive" ,ghc-primitive)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-math-functions" ,ghc-math-functions)))
+    (arguments
+     `(#:tests? #f)) ; FIXME: Test-Suite `spec` fails.
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://github.com/bos/mwc-random")
+    (synopsis "Random number generation library for Haskell")
+    (description "This Haskell package contains code for generating
+high quality random numbers that follow either a uniform or normal
+distribution.  The generated numbers are suitable for use in
+statistical applications.
+
+The uniform PRNG uses Marsaglia's MWC256 (also known as MWC8222)
+multiply-with-carry generator, which has a period of 2^{8222} and
+fares well in tests of randomness.  It is also extremely fast,
+between 2 and 3 times faster than the Mersenne Twister.")
+    (license license:bsd-3)))
+
+(define-public ghc-nats
+  (package
+    (name "ghc-nats")
+    (version "1.1.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/nats/nats-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1v40drmhixck3pz3mdfghamh73l4rp71mzcviipv1y8jhrfxilmr"))))
+    (build-system haskell-build-system)
+    (arguments `(#:haddock? #f))
+    (inputs
+     `(("ghc-hashable" ,ghc-hashable)))
+    (home-page "https://hackage.haskell.org/package/nats")
+    (synopsis "Natural numbers")
+    (description "This library provides the natural numbers for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-nats-bootstrap
+  (package
+    (inherit ghc-nats)
+    (name "ghc-nats-bootstrap")
+    (inputs
+     `(("ghc-hashable" ,ghc-hashable-bootstrap)))
+    (properties '((hidden? #t)))))
+
+(define-public ghc-network
+  (package
+    (name "ghc-network")
+    (version "2.6.3.6")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/network/network-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "198mam7ahny48p9fajznbqq16a8ya2gw0xm3gnm1si1rmc4hdplv"))))
+    (build-system haskell-build-system)
+    ;; The regression tests depend on an unpublished module.
+    (arguments `(#:tests? #f))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-doctest" ,ghc-doctest)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
+    (home-page "https://github.com/haskell/network")
+    (synopsis "Low-level networking interface")
+    (description
+     "This package provides a low-level networking interface.")
+    (license license:bsd-3)))
+
+(define-public ghc-network-info
+  (package
+    (name "ghc-network-info")
+    (version "0.2.0.10")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "network-info-" version "/"
+                           "network-info-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0anmgzcpnz7nw3n6vq0r25m1s9l2svpwi83wza0lzkrlbnbzd02n"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/jystic/network-info")
+    (synopsis "Access the local computer's basic network configuration")
+    (description "This Haskell library provides simple read-only access to the
+local computer's networking configuration.  It is currently capable of
+getting a list of all the network interfaces and their respective
+IPv4, IPv6 and MAC addresses.")
+    (license license:bsd-3)))
+
+(define-public ghc-network-uri
+  (package
+    (name "ghc-network-uri")
+    (version "2.6.1.0")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/network-uri/network-uri-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1w27zkvn39kjr9lmw9421y8w43h572ycsfafsb7kyvr3a4ihlgj2"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:tests? #f))  ; FIXME: currently missing libraries used for tests.
+    (inputs
+     `(("ghc-network" ,ghc-network)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)))
+    (home-page
+     "https://github.com/haskell/network-uri")
+    (synopsis "Library for URI manipulation")
+    (description "This package provides an URI manipulation interface.  In
+@code{network-2.6} the @code{Network.URI} module was split off from the
+@code{network} package into this package.")
+    (license license:bsd-3)))
+
+(define-public ghc-newtype-generics
+  (package
+    (name "ghc-newtype-generics")
+    (version "0.5.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "newtype-generics/newtype-generics-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0igyisw2djg19v9vkna1rwf47k97mvkvk4bbkmswznvbm00z15gj"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "http://github.com/sjakobi/newtype-generics")
+    (synopsis "Typeclass and set of functions for working with newtypes")
+    (description "The @code{Newtype} typeclass represents the packing and
+unpacking of a newtype, and allows you to operate under that newtype with
+functions such as @code{ala}.  Generics support was added in version 0.4,
+making this package a full replacement for the original newtype package,
+and an alternative to newtype-th.")
+    (license license:bsd-3)))
+
+(define-public ghc-non-negative
+  (package
+    (name "ghc-non-negative")
+    (version "0.1.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/non-negative/non-negative-"
+         version ".tar.gz"))
+       (sha256
+        (base32
+         "0f01q916dzkl1i0v15qrw9cviycki5g3fgi6x8gs45iwbzssq52n"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-utility-ht" ,ghc-utility-ht)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://hackage.haskell.org/package/non-negative")
+    (synopsis "Non-negative numbers class")
+    (description "This library provides a class for non-negative numbers,
+a wrapper which can turn any ordered numeric type into a member of that
+class, and a lazy number type for non-negative numbers (a generalization
+of Peano numbers).")
+    (license license:gpl3+)))
+
+(define-public ghc-objectname
+  (package
+    (name "ghc-objectname")
+    (version "1.1.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/ObjectName/ObjectName-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "046jm94rmm46cicd31pl54vdvfjvhd9ffbfycy2lxzc0fliyznvj"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/ObjectName")
+    (synopsis "Helper library for Haskell OpenGL")
+    (description "This tiny package contains the class ObjectName, which
+corresponds to the general notion of explicitly handled identifiers for API
+objects, e.g. a texture object name in OpenGL or a buffer object name in
+OpenAL.")
+    (license license:bsd-3)))
+
+(define-public ghc-old-locale
+  (package
+    (name "ghc-old-locale")
+    (version "1.0.0.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/old-locale/old-locale-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32 "0l3viphiszvz5wqzg7a45zp40grwlab941q5ay29iyw8p3v8pbyv"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("2" "04b9vn007hlvsrx4ksd3r8r3kbyaj2kvwxchdrmd4370qzi8p6gs")))
+    (home-page "https://hackage.haskell.org/package/old-locale")
+    (synopsis "Adapt to locale conventions")
+    (description
+     "This package provides the ability to adapt to locale conventions such as
+date and time formats.")
+    (license license:bsd-3)))
+
+(define-public ghc-old-time
+  (package
+    (name "ghc-old-time")
+    (version "1.1.0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/old-time/old-time-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1h9b26s3kfh2k0ih4383w90ibji6n0iwamxp6rfp2lbq1y5ibjqw"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("2" "1j6ln1dkvhdvnwl33bp0xf9lhc4sybqk0aw42p8cq81xwwzbn7y9")))
+    (inputs
+     `(("ghc-old-locale" ,ghc-old-locale)))
+    (home-page "https://hackage.haskell.org/package/old-time")
+    (synopsis "Time compatibility library for Haskell")
+    (description "Old-time is a package for backwards compatibility with the
+old @code{time} library.  For new projects, the newer
+@uref{https://hackage.haskell.org/package/time, time library} is recommended.")
+    (license license:bsd-3)))
+
+(define-public ghc-opengl
+  (package
+    (name "ghc-opengl")
+    (version "3.0.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/OpenGL/OpenGL-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "19vxwvx2n8zq2klj176l25n2b64ybp0b8mhm4p46gvpcivz41fjc"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-objectname" ,ghc-objectname)
+       ("ghc-gluraw" ,ghc-gluraw)
+       ("ghc-statevar" ,ghc-statevar)
+       ("ghc-openglraw" ,ghc-openglraw)))
+    (home-page "https://www.haskell.org/haskellwiki/Opengl")
+    (synopsis "Haskell bindings for the OpenGL graphics system")
+    (description "This package provides Haskell bindings for the OpenGL
+graphics system (GL, version 4.5) and its accompanying utility library (GLU,
+version 1.3).")
+    (license license:bsd-3)))
+
+(define-public ghc-openglraw
+  (package
+    (name "ghc-openglraw")
+    (version "3.3.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/OpenGLRaw/OpenGLRaw-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1x8w3x308jldj2c1xqcq3a3sc2jc06pdpgqkgjsmixi1skv4a1vb"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-half" ,ghc-half)
+       ("ghc-fixed" ,ghc-fixed)
+       ("glu" ,glu)))
+    (home-page "https://www.haskell.org/haskellwiki/Opengl")
+    (synopsis "Raw Haskell bindings for the OpenGL graphics system")
+    (description "OpenGLRaw is a raw Haskell binding for the OpenGL 4.5
+graphics system and lots of OpenGL extensions.  It is basically a 1:1 mapping
+of OpenGL's C API, intended as a basis for a nicer interface.  OpenGLRaw
+offers access to all necessary functions, tokens and types plus a general
+facility for loading extension entries.  The module hierarchy closely mirrors
+the naming structure of the OpenGL extensions, making it easy to find the
+right module to import.  All API entries are loaded dynamically, so no special
+C header files are needed for building this package.  If an API entry is not
+found at runtime, a userError is thrown.")
+    (license license:bsd-3)))
+
+(define-public ghc-operational
+  (package
+    (name "ghc-operational")
+    (version "0.2.3.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/operational/"
+                           "operational-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1x2abg2q9d26h1vzj40r6k7k3gqgappbs4g9d853vvg77837km4i"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-random" ,ghc-random)))
+    (home-page "http://wiki.haskell.org/Operational")
+    (synopsis "Implementation of difficult monads made easy with operational semantics")
+    (description
+     "This library makes it easy to implement monads with tricky control
+flow. This is useful for: writing web applications in a sequential style,
+programming games with a uniform interface for human and AI players and easy
+replay capababilities, implementing fast parser monads, designing monadic
+DSLs, etc.")
+    (license license:bsd-3)))
+
+(define-public ghc-options
+  (package
+    (name "ghc-options")
+    (version "1.2.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/options/options-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0qjs0v1ny52w51n5582d4z8wy9h6n0zw1xb5dh686ff5wadflgi8"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-monads-tf" ,ghc-monads-tf)
+       ("ghc-chell" ,ghc-chell)
+       ("ghc-chell-quickcheck" ,ghc-chell-quickcheck)))
+    (home-page "https://john-millikin.com/software/haskell-options/")
+    (synopsis "Powerful and easy-to-use command-line option parser")
+    (description
+     "The @code{options} package lets library and application developers
+easily work with command-line options.")
+    (license license:expat)))
+
+;; See ghc-system-filepath-bootstrap, chell and chell-quickcheck are required for tests.
+(define ghc-options-bootstrap
+  (package
+    (name "ghc-options-bootstrap")
+    (version "1.2.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/options/options-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0qjs0v1ny52w51n5582d4z8wy9h6n0zw1xb5dh686ff5wadflgi8"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:tests? #f))
+    (inputs
+     `(("ghc-monads-tf" ,ghc-monads-tf)))
+    (home-page "https://john-millikin.com/software/haskell-options/")
+    (synopsis "Powerful and easy-to-use command-line option parser")
+    (description
+     "The @code{options} package lets library and application developers
+easily work with command-line options.")
+    (license license:expat)))
+
+
+(define-public ghc-optparse-applicative
+  (package
+    (name "ghc-optparse-applicative")
+    (version "0.14.2.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/optparse-applicative"
+             "/optparse-applicative-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0c3z1mvynlyv1garjbdmdd3npm40dabgm75js4r07cf766c1wd71"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-ansi-wl-pprint" ,ghc-ansi-wl-pprint)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/pcapriotti/optparse-applicative")
+    (synopsis "Utilities and combinators for parsing command line options")
+    (description "This package provides utilities and combinators for parsing
+command line options in Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-pandoc
+  (package
+    (name "ghc-pandoc")
+    (version "2.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/pandoc/pandoc-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1dqin92w513l7whg5wdgrngnxsj5mb8gppfvn7kjgyv2pdgpy0zy"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "pandoc.cabal"
+               (("tasty >= 0\\.11 && < 1\\.1")
+                "tasty >= 0.11 && < 1.1.1"))))
+         (add-before 'configure 'patch-tests
+           (lambda _
+             ;; These tests fail benignly and have been adjusted upstream:
+             ;; <https://github.com/commercialhaskell/stackage/issues/3719>.
+             (substitute* "test/Tests/Old.hs"
+               (("lhsWriterTests \"html\"") "[]")))))))
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-aeson-pretty" ,ghc-aeson-pretty)
+       ("ghc-base64-bytestring" ,ghc-base64-bytestring)
+       ("ghc-blaze-html" ,ghc-blaze-html)
+       ("ghc-blaze-markup" ,ghc-blaze-markup)
+       ("ghc-cmark-gfm" ,ghc-cmark-gfm)
+       ("ghc-data-default" ,ghc-data-default)
+       ("ghc-deepseq-generics" ,ghc-deepseq-generics)
+       ("ghc-diff" ,ghc-diff)
+       ("ghc-doctemplates" ,ghc-doctemplates)
+       ("ghc-executable-path" ,ghc-executable-path)
+       ("ghc-glob" ,ghc-glob)
+       ("ghc-haddock-library" ,ghc-haddock-library)
+       ("ghc-hslua" ,ghc-hslua)
+       ("ghc-hslua-module-text" ,ghc-hslua-module-text)
+       ("ghc-http" ,ghc-http)
+       ("ghc-http-client" ,ghc-http-client)
+       ("ghc-http-client-tls" ,ghc-http-client-tls)
+       ("ghc-http-types" ,ghc-http-types)
+       ("ghc-juicypixels" ,ghc-juicypixels)
+       ("ghc-network" ,ghc-network)
+       ("ghc-network-uri" ,ghc-network-uri)
+       ("ghc-old-locale" ,ghc-old-locale)
+       ("ghc-pandoc-types" ,ghc-pandoc-types)
+       ("ghc-random" ,ghc-random)
+       ("ghc-scientific" ,ghc-scientific)
+       ("ghc-sha" ,ghc-sha)
+       ("ghc-skylighting" ,ghc-skylighting)
+       ("ghc-split" ,ghc-split)
+       ("ghc-syb" ,ghc-syb)
+       ("ghc-tagsoup" ,ghc-tagsoup)
+       ("ghc-temporary" ,ghc-temporary)
+       ("ghc-texmath" ,ghc-texmath)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-xml" ,ghc-xml)
+       ("ghc-yaml" ,ghc-yaml)
+       ("ghc-zip-archive" ,ghc-zip-archive)
+       ("ghc-zlib" ,ghc-zlib)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-golden" ,ghc-tasty-golden)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://pandoc.org")
+    (synopsis "Conversion between markup formats")
+    (description
+     "Pandoc is a Haskell library for converting from one markup format to
+another, and a command-line tool that uses this library.  It can read and
+write Markdown and (subsets of) other formats, such as HTML, reStructuredText,
+LaTeX, DocBook, and many more.
+
+Pandoc extends standard Markdown syntax with footnotes, embedded LaTeX,
+definition lists, tables, and other features.  A compatibility mode is
+provided for those who need a drop-in replacement for Markdown.pl.")
+    (license license:gpl2+)))
+
+(define-public ghc-pandoc-citeproc
+  (package
+    (name "ghc-pandoc-citeproc")
+    (version "0.14.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "pandoc-citeproc/pandoc-citeproc-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0yj6rckwsc9vig40cm15ry0j3d01xpk04qma9n4byhal6v4b5h22"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         ;; Many YAML tests (44) are failing do to changes in ghc-yaml:
+         ;; <https://github.com/jgm/pandoc-citeproc/issues/342>.
+         (add-before 'configure 'patch-tests
+           (lambda _
+             (substitute* "tests/test-pandoc-citeproc.hs"
+               (("let allTests = citeprocTests \\+\\+ biblio2yamlTests")
+                "let allTests = citeprocTests"))))
+         ;; Tests need to be run after installation.
+         (delete 'check)
+         (add-after 'install 'post-install-check
+           (assoc-ref %standard-phases 'check)))))
+    (inputs
+     `(("ghc-pandoc-types" ,ghc-pandoc-types)
+       ("ghc-pandoc" ,ghc-pandoc)
+       ("ghc-tagsoup" ,ghc-tagsoup)
+       ("ghc-aeson" ,ghc-aeson)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-xml-conduit" ,ghc-xml-conduit)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-data-default" ,ghc-data-default)
+       ("ghc-setenv" ,ghc-setenv)
+       ("ghc-split" ,ghc-split)
+       ("ghc-yaml" ,ghc-yaml)
+       ("ghc-hs-bibutils" ,ghc-hs-bibutils)
+       ("ghc-rfc5051" ,ghc-rfc5051)
+       ("ghc-syb" ,ghc-syb)
+       ("ghc-old-locale" ,ghc-old-locale)
+       ("ghc-aeson-pretty" ,ghc-aeson-pretty)
+       ("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-temporary" ,ghc-temporary)))
+    (home-page "https://github.com/jgm/pandoc-citeproc")
+    (synopsis "Library for using pandoc with citeproc")
+    (description
+     "The @code{pandoc-citeproc} library exports functions for using the
+citeproc system with pandoc.  It relies on @code{citeproc-hs}, a library for
+rendering bibliographic reference citations into a variety of styles using a
+macro language called @dfn{Citation Style Language} (CSL).  This package also
+contains an executable @code{pandoc-citeproc}, which works as a pandoc filter,
+and also has a mode for converting bibliographic databases a YAML format
+suitable for inclusion in pandoc YAML metadata.")
+    (license license:bsd-3)))
+
+(define-public ghc-pandoc-types
+  (package
+    (name "ghc-pandoc-types")
+    (version "1.17.5.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "pandoc-types/pandoc-types-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "1q6v2bynij724fv347mhqxdscwifzrx5jb9mq80608qf638fn717"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-syb" ,ghc-syb)
+       ("ghc-aeson" ,ghc-aeson)
+       ("ghc-string-qq" ,ghc-string-qq)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "http://johnmacfarlane.net/pandoc")
+    (synopsis "Types for representing a structured document")
+    (description
+     "This module defines the @code{Pandoc} data structure, which is used by
+pandoc to represent structured documents.  It also provides functions for
+building up, manipulating and serialising @code{Pandoc} structures.")
+    (license license:bsd-3)))
+
+(define-public ghc-parallel
+  (package
+    (name "ghc-parallel")
+    (version "3.2.2.0")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/parallel/parallel-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1xkfi96w6yfpppd0nw1rnszdxmvifwzm699ilv6332ra3akm610p"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/parallel")
+    (synopsis "Parallel programming library")
+    (description
+     "This package provides a library for parallel programming.")
+    (license license:bsd-3)))
+
+(define-public ghc-parsec-numbers
+  (package
+    (name "ghc-parsec-numbers")
+    (version "0.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "parsec-numbers/parsec-numbers-" version ".tar.gz"))
+       (sha256
+        (base32 "1gzy4v3r02kvdxvgg1nj83mmb6aph2v4ilf9c7y6nbvi2x49l0bp"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/parsec-numbers")
+    (synopsis "Utilities for parsing numbers from strings")
+    (description
+     "This package provides the number parsers without the need to use a large
+(and unportable) token parser.")
+    (license license:bsd-3)))
+
+(define-public ghc-parser-combinators
+  (package
+    (name "ghc-parser-combinators")
+    (version "1.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "parser-combinators/parser-combinators-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1pwfdsklqwvaynwpdzmx1bs35mp6dpsyaqdnzxnqcrxwf5h8sk75"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/mrkkrp/parser-combinators")
+    (synopsis "Commonly useful parser combinators")
+    (description
+     "This is a lightweight package providing commonly useful parser
+combinators.")
+    (license license:bsd-3)))
+
+(define-public ghc-parsers
+  (package
+    (name "ghc-parsers")
+    (version "0.12.9")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/parsers/parsers-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1r05sc1mcglk8w596kq9a1brfn9c2vll8lq16j07ln0vsz4jzrc1"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f)) ; FIXME: Test fails with "cannot satisfy
+                               ; -package attoparsec-0.13.0.1"
+    (inputs
+     `(("ghc-base-orphans" ,ghc-base-orphans)
+       ("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-scientific" ,ghc-scientific)
+       ("ghc-charset" ,ghc-charset)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)))
+    (home-page "https://github.com/ekmett/parsers/")
+    (synopsis "Parsing combinators")
+    (description "This library provides convenient combinators for working
+with and building parsing combinator libraries.  Given a few simple instances,
+you get access to a large number of canned definitions.  Instances exist for
+the parsers provided by @code{parsec}, @code{attoparsec} and @code{base}'s
+@code{Text.Read}.")
+    (license license:bsd-3)))
+
+(define-public ghc-path
+  (package
+    (name "ghc-path")
+    (version "0.6.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/path/path-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0nayla4k1gb821k8y5b9miflv1bi8f0czf9rqr044nrr2dddi2sb"))))
+    (build-system haskell-build-system)
+    (arguments
+     ;; TODO: There are some Windows-related tests and modules that need to be
+     ;; danced around.
+     `(#:tests? #f
+       #:cabal-revision
+       ("1" "05b1zwx2a893h4h5wvgpc5g5pyx71hfmx409rqisd8s1bq1hn463")))
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-hashable" ,ghc-hashable)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-genvalidity" ,ghc-genvalidity)
+       ("ghc-genvalidity-property" ,ghc-genvalidity-property)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-validity" ,ghc-validity)))
+    (home-page
+     "http://hackage.haskell.org/package/path")
+    (synopsis "Support for well-typed paths")
+    (description "This package introduces a type for paths upholding useful
+invariants.")
+    (license license:bsd-3)))
+
+(define-public ghc-path-io
+  (package
+    (name "ghc-path-io")
+    (version "1.3.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/path-io/path-io-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1g9m3qliqjk1img894wsb89diym5zrq51qkkrwhz4sbm9a8hbv1a"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-dlist" ,ghc-dlist)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-path" ,ghc-path)
+       ("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-unix-compat" ,ghc-unix-compat)
+       ("ghc-temporary" ,ghc-temporary)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)))
+    (arguments
+    `(#:cabal-revision
+      ("3" "1h9hsibbflkxpjl2fqamqiv3x3gasf51apnmklrs9l9x8r32hzcc")))
+    (home-page
+     "https://github.com/mrkkrp/path-io")
+    (synopsis "Functions for manipulating well-typed paths")
+    (description "This package provides an interface to the @code{directory}
+package for users of @code{path}.  It also implements some missing stuff like
+recursive scanning and copying of directories, working with temporary
+files/directories, and more.")
+    (license license:bsd-3)))
+
+(define-public ghc-paths
+  (package
+    (name "ghc-paths")
+    (version "0.1.0.9")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/ghc-paths/ghc-paths-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0ibrr1dxa35xx20cpp8jzgfak1rdmy344dfwq4vlq013c6w8z9mg"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/simonmar/ghc-paths")
+    (synopsis
+     "Knowledge of GHC's installation directories")
+    (description
+     "Knowledge of GHC's installation directories.")
+    (license license:bsd-3)))
+
+(define-public ghc-patience
+  (package
+    (name "ghc-patience")
+    (version "0.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/patience/patience-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0qyv20gqy9pb1acy700ahv70lc6vprcwb26cc7fcpcs4scsc7irm"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/patience")
+    (synopsis "Patience diff and longest increasing subsequence")
+    (description
+     "This library implements the 'patience diff' algorithm, as well as the
+patience algorithm for the longest increasing subsequence problem.
+Patience diff computes the difference between two lists, for example the lines
+of two versions of a source file.  It provides a good balance between
+performance, nice output for humans, and simplicity of implementation.")
+    (license license:bsd-3)))
+
+(define-public ghc-pcre-light
+  (package
+    (name "ghc-pcre-light")
+    (version "0.4.0.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/pcre-light/pcre-light-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0xcyi1fivwg7a92mch5bcqzmrfxzqj42rmb3m8kgs61x4qwpxj82"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("pcre" ,pcre)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (home-page "https://github.com/Daniel-Diaz/pcre-light")
+    (synopsis "Haskell library for Perl 5 compatible regular expressions")
+    (description "This package provides a small, efficient, and portable regex
+library for Perl 5 compatible regular expressions.  The PCRE library is a set
+of functions that implement regular expression pattern matching using the same
+syntax and semantics as Perl 5.")
+    (license license:bsd-3)))
+
+(define-public ghc-persistent
+  (package
+    (name "ghc-persistent")
+    (version "2.8.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "persistent-" version "/"
+                           "persistent-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1h0yijbf1yiwl50klyafy4ln99j8bib4kgbzviw7fc4y4mwv4sv9"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-old-locale" ,ghc-old-locale)
+              ("ghc-conduit" ,ghc-conduit)
+              ("ghc-resourcet" ,ghc-resourcet)
+              ("ghc-exceptions" ,ghc-exceptions)
+              ("ghc-monad-control" ,ghc-monad-control)
+              ("ghc-lifted-base" ,ghc-lifted-base)
+              ("ghc-resource-pool" ,ghc-resource-pool)
+              ("ghc-path-pieces" ,ghc-path-pieces)
+              ("ghc-http-api-data" ,ghc-http-api-data)
+              ("ghc-aeson" ,ghc-aeson)
+              ("ghc-monad-logger" ,ghc-monad-logger)
+              ("ghc-transformers-base" ,ghc-transformers-base)
+              ("ghc-base64-bytestring" ,ghc-base64-bytestring)
+              ("ghc-unordered-containers" ,ghc-unordered-containers)
+              ("ghc-vector" ,ghc-vector)
+              ("ghc-attoparsec" ,ghc-attoparsec)
+              ("ghc-haskell-src-meta" ,ghc-haskell-src-meta)
+              ("ghc-blaze-html" ,ghc-blaze-html)
+              ("ghc-blaze-markup" ,ghc-blaze-markup)
+              ("ghc-silently" ,ghc-silently)
+              ("ghc-fast-logger" ,ghc-fast-logger)
+              ("ghc-scientific" ,ghc-scientific)
+              ("ghc-tagged" ,ghc-tagged)
+              ("ghc-void" ,ghc-void)))
+    (native-inputs `(("ghc-hspec" ,ghc-hspec)))
+    (home-page "https://www.yesodweb.com/book/persistent")
+    (synopsis "Type-safe, multi-backend data serialization for Haskell")
+    (description "This Haskell package allows Haskell programs to access data
+storage systems like PostgreSQL, SQLite, MySQL and MongoDB in a type-safe
+way.")
+    (license license:expat)))
+
+(define-public ghc-persistent-sqlite
+  (package
+    (name "ghc-persistent-sqlite")
+    (version "2.8.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "persistent-sqlite-" version "/"
+                           "persistent-sqlite-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1chbmvjz46smhgnzhha3bbkhys3fys6dip1jr4v7xp1jf78zbyp6"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-persistent" ,ghc-persistent)
+              ("ghc-unliftio-core" ,ghc-unliftio-core)
+              ("ghc-aeson" ,ghc-aeson)
+              ("ghc-conduit" ,ghc-conduit)
+              ("ghc-monad-logger" ,ghc-monad-logger)
+              ("ghc-microlens-th" ,ghc-microlens-th)
+              ("ghc-resourcet" ,ghc-resourcet)
+              ("ghc-old-locale" ,ghc-old-locale)
+              ("ghc-resource-pool" ,ghc-resource-pool)
+              ("ghc-unordered-containers" ,ghc-unordered-containers)))
+    (native-inputs `(("ghc-hspec" ,ghc-hspec)
+                     ("ghc-persistent-template" ,ghc-persistent-template)
+                     ("ghc-temporary" ,ghc-temporary)))
+    (home-page
+     "https://www.yesodweb.com/book/persistent")
+    (synopsis "Backend for the persistent library using sqlite3")
+    (description "This Haskell package includes a thin sqlite3 wrapper based
+on the direct-sqlite package, as well as the entire C library, so there are no
+system dependencies.")
+    (license license:expat)))
+
+(define-public ghc-persistent-template
+  (package
+    (name "ghc-persistent-template")
+    (version "2.5.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "persistent-template-" version "/"
+                           "persistent-template-" version ".tar.gz"))
+       (sha256
+        (base32
+         "008afcy7zbw7bzp9jww8gdldb51kfm0fg4p0x4xcp61gx4679bjc"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("2" "03qgwk32krldph3blw5agiqcpccr3649hajyn8wm9k71zz82dpn6")))
+    (inputs `(("ghc-persistent" ,ghc-persistent)
+              ("ghc-monad-control" ,ghc-monad-control)
+              ("ghc-aeson" ,ghc-aeson)
+              ("ghc-aeson-compat" ,ghc-aeson-compat)
+              ("ghc-monad-logger" ,ghc-monad-logger)
+              ("ghc-unordered-containers" ,ghc-unordered-containers)
+              ("ghc-tagged" ,ghc-tagged)
+              ("ghc-path-pieces" ,ghc-path-pieces)
+              ("ghc-http-api-data" ,ghc-http-api-data)))
+    (native-inputs `(("ghc-hspec" ,ghc-hspec)
+                     ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://www.yesodweb.com/book/persistent")
+    (synopsis "Type-safe, non-relational, multi-backend persistence")
+    (description "This Haskell package provides interfaces and helper
+functions for the ghc-persistent package.")
+    (license license:expat)))
+
+(define-public ghc-polyparse
+  (package
+    (name "ghc-polyparse")
+    (version "1.12")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/polyparse/polyparse-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "05dya1vdvq29hkhkdlsglzhw7bdn51rvs1javs0q75nf99c66k7m"))))
+    (build-system haskell-build-system)
+    (home-page
+     "http://code.haskell.org/~malcolm/polyparse/")
+    (synopsis
+     "Alternative parser combinator libraries")
+    (description
+     "This package provides a variety of alternative parser combinator
+libraries, including the original HuttonMeijer set.  The Poly sets have
+features like good error reporting, arbitrary token type, running state, lazy
+parsing, and so on.  Finally, Text.Parse is a proposed replacement for the
+standard Read class, for better deserialisation of Haskell values from
+Strings.")
+    (license license:lgpl2.1)))
+
+(define-public ghc-pqueue
+  (package
+    (name "ghc-pqueue")
+    (version "1.4.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "pqueue/pqueue-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1zvwm1zcqqq5n101s1brjhgbay8rf9fviq6gxbplf40i63m57p1x"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://hackage.haskell.org/package/pqueue")
+    (synopsis "Reliable, persistent, fast priority queues")
+    (description
+     "This package provides a fast, reliable priority queue implementation
+based on a binomial heap.")
+    (license license:bsd-3)))
+
+(define-public ghc-prelude-extras
+  (package
+    (name "ghc-prelude-extras")
+    (version "0.4.0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/prelude-extras/prelude-extras-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0xzqdf3nl2h0ra4gnslm1m1nsxlsgc0hh6ky3vn578vh11zhifq9"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/ekmett/prelude-extras")
+    (synopsis "Higher order versions of Prelude classes")
+    (description "This library provides higher order versions of
+@code{Prelude} classes to ease programming with polymorphic recursion and
+reduce @code{UndecidableInstances}.")
+    (license license:bsd-3)))
+
 (define-public ghc-prettyclass
   (package
     (name "ghc-prettyclass")
@@ -191,6 +7685,249 @@ provides the pretty printing class and instances for the Prelude
 types.")
     (license license:bsd-3)))
 
+(define-public ghc-pretty-hex
+  (package
+    (name "ghc-pretty-hex")
+    (version "1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "pretty-hex-" version "/"
+                           "pretty-hex-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0ylwkvvjvmpprha9nx83xb8gkhyanhk5fffc0r7lb96n4ch5z6pz"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/GaloisInc/hexdump")
+    (synopsis "Haskell library for hex dumps of ByteStrings")
+    (description "This Haskell library generates pretty hex dumps of
+ByteStrings in the style of other common *nix hex dump tools.")
+    (license license:bsd-3)))
+
+(define-public ghc-pretty-show
+  (package
+    (name "ghc-pretty-show")
+    (version "1.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/pretty-show/"
+                           "pretty-show-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0br7pkxqqqhby2j2v1g847lgqsrasx56g1jw3dhmjh4flzs6warq"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-haskell-lexer" ,ghc-haskell-lexer)
+       ("ghc-happy" ,ghc-happy)))
+    (home-page "http://wiki.github.com/yav/pretty-show")
+    (synopsis "Tools for working with derived `Show` instances")
+    (description
+     "This package provides a library and an executable for working with
+derived @code{Show} instances.  By using the library, derived @code{Show}
+instances can be parsed into a generic data structure.  The @code{ppsh} tool
+uses the library to produce human-readable versions of @code{Show} instances,
+which can be quite handy for debugging Haskell programs.  We can also render
+complex generic values into an interactive Html page, for easier
+examination.")
+    (license license:expat)))
+
+(define-public ghc-primitive
+  (package
+    (name "ghc-primitive")
+    (version "0.6.4.0")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/primitive/primitive-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0r0cda7acvplgwaxy69kviv4jp7kkfi038by68gj4yfx4iwszgjc"))))
+    (build-system haskell-build-system)
+    (home-page
+     "https://github.com/haskell/primitive")
+    (synopsis "Primitive memory-related operations")
+    (description
+     "This package provides various primitive memory-related operations.")
+    (license license:bsd-3)))
+
+(define-public ghc-process-extras
+  (package
+    (name "ghc-process-extras")
+    (version "0.7.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/process-extras/"
+         "process-extras-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0klqgr37f1z2z6i0a9b0giapmq0p35l5k9kz1p7f0k1597w7agi9"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-data-default" ,ghc-data-default)
+       ("ghc-generic-deriving" ,ghc-generic-deriving)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-listlike" ,ghc-listlike)))
+    (home-page "https://github.com/seereason/process-extras")
+    (synopsis "Extra tools for managing processes")
+    (description "This packages extends
+@url{http://hackage.haskell.org/package/process}.  It allows you to read
+process input and output as ByteStrings or Text, or write your own
+ProcessOutput instance.  It also provides lazy process input and output,
+and a ProcessMaker class for more flexibility in the process creation
+API.")
+    (license license:expat)))
+
+(define-public ghc-profunctors
+  (package
+    (name "ghc-profunctors")
+    (version "5.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/profunctors/profunctors-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0s1pwjidbn761xk43pmzyvn99hm3psdifjd78ylki7f97aiyd0g9"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("2" "1ywlg9z8nlhd2avgb8c6gbkv8zyk7hvc25926bafyg0m0k8y1amq")))
+    (inputs
+     `(("ghc-base-orphans" ,ghc-base-orphans)
+       ("ghc-bifunctors" ,ghc-bifunctors)
+       ("ghc-comonad" ,ghc-comonad)
+       ("ghc-contravariant" ,ghc-contravariant)
+       ("ghc-distributive" ,ghc-distributive)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-tagged" ,ghc-tagged)))
+    (home-page "https://github.com/ekmett/profunctors/")
+    (synopsis "Profunctors for Haskell")
+    (description "This library provides profunctors for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-psqueues
+  (package
+    (name "ghc-psqueues")
+    (version "0.2.7.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "psqueues-" version "/"
+                           "psqueues-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1sjgc9bxh63kkdp59nbirx3xazr02ia5yhp4f4a0jnq1hj465wsc"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-hashable" ,ghc-hashable)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://github.com/jaspervdj/psqueues")
+    (synopsis "Pure priority search queues")
+    (description "The psqueues package provides
+@uref{https://en.wikipedia.org/wiki/Priority_queue, Priority Search Queues} in
+three different flavors:
+
+@itemize
+@item @code{OrdPSQ k p v}, which uses the @code{Ord k} instance to provide
+fast insertion, deletion and lookup.  This implementation is based on Ralf
+Hinze's @uref{http://citeseer.ist.psu.edu/hinze01simple.html, A Simple
+Implementation Technique for Priority Search Queues}.
+
+Hence, it is similar to the @uref{https://hackage.haskell.org/package/PSQueue,
+PSQueue} library, although it is considerably faster and provides a slightly
+different API.
+
+@item @code{IntPSQ p v} is a far more efficient implementation.  It fixes the
+key type to @code{Int} and uses a
+@code{https://en.wikipedia.org/wiki/Radix_tree, radix tree} (like @code{IntMap})
+with an additional min-heap property.
+
+@item @code{HashPSQ k p v} is a fairly straightforward extension
+of @code{IntPSQ}: it simply uses the keys' hashes as indices in the
+@code{IntPSQ}.  If there are any hash collisions, it uses an
+@code{OrdPSQ} to resolve those.  The performance of this implementation
+is comparable to that of @code{IntPSQ}, but it is more widely
+applicable since the keys are not restricted to @code{Int},
+but rather to any @code{Hashable} datatype.
+@end itemize
+
+Each of the three implementations provides the same API, so they can
+be used interchangeably.
+
+Typical applications of Priority Search Queues include:
+
+@itemize
+@item Caches, and more specifically LRU Caches;
+@item Schedulers;
+@item Pathfinding algorithms, such as Dijkstra's and A*.
+@end itemize")
+    (license license:bsd-3)))
+
+(define-public ghc-random
+  (package
+    (name "ghc-random")
+    (version "1.1")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/random/random-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32 "0nis3lbkp8vfx8pkr6v7b7kr5m334bzb0fk9vxqklnp2aw8a865p"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/random")
+    (synopsis "Random number library")
+    (description "This package provides a basic random number generation
+library, including the ability to split random number generators.")
+    (license license:bsd-3)))
+
+(define-public ghc-raw-strings-qq
+  (package
+    (name "ghc-raw-strings-qq")
+    (version "1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "raw-strings-qq/raw-strings-qq-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1lxy1wy3awf52968iy5y9r5z4qgnn2sxkdrh7js3m9gadb11w09f"))))
+    (build-system haskell-build-system)
+    (native-inputs `(("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://github.com/23Skidoo/raw-strings-qq")
+    (synopsis "Raw string literals for Haskell")
+    (description
+     "This package provides a quasiquoter for raw string literals, i.e. string
+literals that don't recognise the standard escape sequences.  Basically, they
+make your code more readable by freeing you from the responsibility to escape
+backslashes.  They are useful when working with regular expressions,
+DOS/Windows paths and markup languages (such as XML).")
+    (license license:bsd-3)))
+
 (define-public ghc-readable
   (package
     (name "ghc-readable")
@@ -211,6 +7948,2270 @@ reading data types from @code{ByteString} and @code{Text}.  It also
 includes efficient implementations for common data types.")
     (license license:bsd-3)))
 
+(define-public ghc-rebase
+  (package
+    (name "ghc-rebase")
+    (version "1.2.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "rebase-" version "/"
+                           "rebase-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1gah2qwfpzwamnikbc5h4nv6dgvv9h16di9ka7946za3nibyasya"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-hashable" ,ghc-hashable)
+              ("ghc-vector" ,ghc-vector)
+              ("ghc-unordered-containers" ,ghc-unordered-containers)
+              ("ghc-scientific" ,ghc-scientific)
+              ("ghc-uuid" ,ghc-uuid)
+              ("ghc-dlist" ,ghc-dlist)
+              ("ghc-void" ,ghc-void)
+              ("ghc-bifunctors" ,ghc-bifunctors)
+              ("ghc-profunctors" ,ghc-profunctors)
+              ("ghc-contravariant" ,ghc-contravariant)
+              ("ghc-contravariant-extras" ,ghc-contravariant-extras)
+              ("ghc-semigroups" ,ghc-semigroups)
+              ("ghc-either" ,ghc-either)
+              ("ghc-fail" ,ghc-fail)
+              ("ghc-base-prelude" ,ghc-base-prelude)))
+    (home-page "https://github.com/nikita-volkov/rebase")
+    (synopsis "Progressive alternative to the base package
+for Haskell")
+    (description "This Haskell package is intended for those who are
+tired of keeping long lists of dependencies to the same essential libraries
+in each package as well as the endless imports of the same APIs all over again.
+
+It also supports the modern tendencies in the language.
+
+To solve those problems this package does the following:
+
+@itemize
+@item Reexport the original APIs under the @code{Rebase} namespace.
+
+@item Export all the possible non-conflicting symbols from the
+@code{Rebase.Prelude} module.
+
+@item Give priority to the modern practices in the conflicting cases.
+@end itemize
+
+The policy behind the package is only to reexport the non-ambiguous and
+non-controversial APIs, which the community has obviously settled on.
+The package is intended to rapidly evolve with the contribution from
+the community, with the missing features being added with pull-requests.")
+    (license license:expat)))
+
+(define-public ghc-reducers
+  (package
+    (name "ghc-reducers")
+    (version "3.12.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/reducers/reducers-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "09wf8pl9ycglcv6qj5ba26gkg2s5iy81hsx9xp0q8na0cwvp71ki"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-fingertree" ,ghc-fingertree)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-semigroupoids" ,ghc-semigroupoids)
+       ("ghc-semigroups" ,ghc-semigroups)))
+    (home-page "https://github.com/ekmett/reducers/")
+    (synopsis "Semigroups, specialized containers and a general map/reduce framework")
+    (description "This library provides various semigroups, specialized
+containers and a general map/reduce framework for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-refact
+  (package
+    (name "ghc-refact")
+    (version "0.3.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "refact/refact-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0v0zxcx29b8jxs2kgy9csykqcp8kzhdvyylw2xfwmj4pfxr2kl0a"))))
+    (build-system haskell-build-system)
+    (home-page "http://hackage.haskell.org/package/refact")
+    (synopsis "Specify refactorings to perform with apply-refact")
+    (description
+     "This library provides a datatype which can be interpreted by
+@code{apply-refact}.  It exists as a separate library so that applications can
+specify refactorings without depending on GHC.")
+    (license license:bsd-3)))
+
+(define-public ghc-reflection
+  (package
+    (name "ghc-reflection")
+    (version "2.1.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/reflection/reflection-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0kf4a5ijw6jfnfibjcrpdy9vzh1n6v2pxia8dhyyqdissiwc8bzj"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-tagged" ,ghc-tagged)))
+    (home-page "https://github.com/ekmett/reflection")
+    (synopsis "Reify arbitrary terms into types that can be reflected back
+into terms")
+    (description "This package addresses the 'configuration problem' which is
+propagating configurations that are available at run-time, allowing multiple
+configurations to coexist without resorting to mutable global variables or
+@code{System.IO.Unsafe.unsafePerformIO}.")
+    (license license:bsd-3)))
+
+(define-public ghc-regex
+  (package
+    (name "ghc-regex")
+    (version "1.0.1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/regex/"
+                           "regex-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1sjkpkgv4phy5b5v2lr89x4vx4dh44pj0sbvlsp6n86w9v6v4jwb"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'relax-dependencies
+           (lambda _
+             (substitute* "regex.cabal"
+               (("base-compat.*>=.*0.6.*")
+                "base-compat >= 0.6\n")
+               (("template-haskell.*>=.*2.7.*")
+                "template-haskell >= 2.7\n"))
+             #t)))))
+    (inputs
+     `(("ghc-base-compat" ,ghc-base-compat)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-regex-base" ,ghc-regex-base)
+       ("ghc-regex-pcre-builtin" ,ghc-regex-pcre-builtin)
+       ("ghc-regex-tdfa" ,ghc-regex-tdfa)
+       ("ghc-regex-tdfa-text" ,ghc-regex-tdfa-text)
+       ("ghc-time-locale-compat" ,ghc-time-locale-compat)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-utf8-string" ,ghc-utf8-string)))
+    (home-page "http://regex.uk")
+    (synopsis "Toolkit for regex-base")
+    (description
+     "This package provides a regular expression toolkit for @code{regex-base}
+with compile-time checking of regular expression syntax, data types for
+matches and captures, a text replacement toolkit, portable options, high-level
+AWK-like tools for building text processing apps, regular expression macros
+with parsers and test bench, comprehensive documentation, tutorials and
+copious examples.")
+    (license license:bsd-3)))
+
+(define-public ghc-regex-applicative
+  (package
+    (name "ghc-regex-applicative")
+    (version "0.3.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/regex-applicative/"
+             "regex-applicative-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1riv7jqf26lbv4rm54sd6mrx8xdh4dvh4xbzymzdfdw13k6a4nb6"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-smallcheck" ,ghc-smallcheck)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-smallcheck" ,ghc-tasty-smallcheck)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
+    (home-page "https://github.com/feuerbach/regex-applicative")
+    (synopsis "Regex-based parsing with applicative interface")
+    (description
+     "@code{regex-applicative} is a Haskell library for parsing using
+regular expressions.  Parsers can be built using Applicative interface.")
+    (license license:expat)))
+
+(define-public ghc-regex-base
+  (package
+    (name "ghc-regex-base")
+    (version "0.93.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/regex-base/regex-base-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0y1j4h2pg12c853nzmczs263di7xkkmlnsq5dlp5wgbgl49mgp10"))))
+    (build-system haskell-build-system)
+    (home-page
+     "https://sourceforge.net/projects/lazy-regex")
+    (synopsis "Replaces/Enhances Text.Regex")
+    (description "@code{Text.Regex.Base} provides the interface API for
+regex-posix, regex-pcre, regex-parsec, regex-tdfa, regex-dfa.")
+    (license license:bsd-3)))
+
+(define-public ghc-regex-compat
+  (package
+    (name "ghc-regex-compat")
+    (version "0.95.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/regex-compat/regex-compat-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0fwmima3f04p9y4h3c23493n1xj629ia2dxaisqm6rynljjv2z6m"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-regex-base" ,ghc-regex-base)
+       ("ghc-regex-posix" ,ghc-regex-posix)))
+    (home-page "https://sourceforge.net/projects/lazy-regex")
+    (synopsis "Replaces/Enhances Text.Regex")
+    (description "This library provides one module layer over
+@code{regex-posix} to replace @code{Text.Regex}.")
+    (license license:bsd-3)))
+
+(define-public ghc-regex-compat-tdfa
+  (package
+    (name "ghc-regex-compat-tdfa")
+    (version "0.95.1.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/regex-compat-tdfa/regex-compat-tdfa-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1p90fn90yhp7fvljjdqjp41cszidcfz4pw7fwvzyx4739b98x8sg"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-regex-base" ,ghc-regex-base)
+       ("ghc-regex-tdfa" ,ghc-regex-tdfa)))
+    (home-page "https://hub.darcs.net/shelarcy/regex-compat-tdfa")
+    (synopsis "Unicode Support version of Text.Regex, using regex-tdfa")
+    (description
+     "One module layer over @code{regex-tdfa} to replace @code{Text.Regex}.
+@code{regex-compat} can't use Unicode characters correctly because of using regex-posix.
+This is not good for Unicode users.  This modified regex-compat uses regex-tdfa to solve
+this problem.")
+    (license license:bsd-3)))
+
+(define-public ghc-regex-pcre-builtin
+  (package
+    (name "ghc-regex-pcre-builtin")
+    (version "0.94.4.8.8.35")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "regex-pcre-builtin/regex-pcre-builtin-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "0y7as9wqlkykpipka2cfdhmcnin345q01pp0wsva8fwmvsavdl8b"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-regex-base" ,ghc-regex-base)))
+    (home-page "https://hackage.haskell.org/package/regex-pcre")
+    (synopsis "Enhancement of the builtin Text.Regex library")
+    (description
+     "This package is an enhancement of the @code{Text.Regex} library,
+providing the PCRE backend to accompany regex-base, with bundled code from
+@url{https://www.pcre.org}.")
+    (license license:bsd-3)))
+
+(define-public ghc-regex-posix
+  (package
+    (name "ghc-regex-posix")
+    (version "0.95.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/regex-posix/regex-posix-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0gkhzhj8nvfn1ija31c7xnl6p0gadwii9ihyp219ck2arlhrj0an"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-regex-base" ,ghc-regex-base)))
+    (home-page "https://sourceforge.net/projects/lazy-regex")
+    (synopsis "POSIX regular expressions for Haskell")
+    (description "This library provides the POSIX regex backend used by the
+Haskell library @code{regex-base}.")
+    (license license:bsd-3)))
+
+(define-public ghc-regex-tdfa
+  (package
+    (name "ghc-regex-tdfa")
+    (version "1.2.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/regex-tdfa/regex-tdfa-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0l7ajnh4hpgggf2a1r9dg0hx2fy679vd2kada5y7r02hy3nfxala"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-regex-base" ,ghc-regex-base)))
+    (home-page "https://github.com/ChrisKuklewicz/regex-tdfa")
+    (synopsis "POSIX extended regular expressions in Haskell.")
+    (description
+     "Regex-tdfa is a pure Haskell regular expression library implementing POSIX
+extended regular expressions.  It is a \"tagged\" DFA regex engine. It is
+inspired by libtre.")
+    (license license:bsd-3)))
+
+(define-public ghc-regex-tdfa-text
+  (package
+    (name "ghc-regex-tdfa-text")
+    (version "1.0.0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/regex-tdfa-text/"
+             "regex-tdfa-text-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0090g6lgbdm9lywpqm2d3724nnnh24nx3vnlqr96qc2w486pmmrq"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-regex-base" ,ghc-regex-base)
+       ("ghc-regex-tdfa" ,ghc-regex-tdfa)))
+    (home-page
+     "http://hackage.haskell.org/package/regex-tdfa-text")
+    (synopsis "Text interface for regex-tdfa")
+    (description
+     "This provides an extra text interface for regex-tdfa.")
+    (license license:bsd-3)))
+
+(define-public ghc-rerebase
+  (package
+    (name "ghc-rerebase")
+    (version "1.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/rerebase/rerebase-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "11v6rmz7ql2rdx6mhb3lsal952lwihclfhh0m7fcnii5br0906ks"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-rebase" ,ghc-rebase)))
+    (home-page "https://github.com/nikita-volkov/rerebase")
+    (synopsis "Reexports from ``base'' with many other standard libraries")
+    (description "A rich drop-in replacement for @code{base}.  For details and
+documentation please visit @uref{https://github.com/nikita-volkov/rerebase,
+the project's home page}.")
+    (license license:expat)))
+
+(define-public ghc-resolv
+  (package
+    (name "ghc-resolv")
+    (version "0.1.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/resolv/resolv-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0wh7wj56l3f2bylz563g5g04a4nydj8acv60hpwa7k3mn792xca9"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("1" "15ay4n3x8c09cb3h4z1nan84yd3n9zpgvi6h114hk98bq10k8mma")
+       #:tests? #f)) ; The required test frameworks are too old.
+    (inputs
+     `(("ghc-base16-bytestring" ,ghc-base16-bytestring)))
+    (home-page "https://github.com/haskell/hackage-security")
+    (synopsis "Domain Name Service (DNS) lookup via @code{libresolv}")
+    (description "This package implements an API for accessing the
+@uref{https://tools.ietf.org/html/rfc1035, Domain Name Service (DNS)}
+resolver service via the standard @code{libresolv} system library (whose
+API is often available directly via the standard @code{libc} C library) on
+Unix systems.")
+    (license license:gpl3)))
+
+(define-public ghc-resource-pool
+  (package
+    (name "ghc-resource-pool")
+    (version "0.2.3.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "resource-pool-" version "/"
+                           "resource-pool-" version ".tar.gz"))
+       (sha256
+        (base32
+         "04mw8b9djb14zp4rdi6h7mc3zizh597ffiinfbr4m0m8psifw9w6"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-hashable" ,ghc-hashable)
+              ("ghc-monad-control" ,ghc-monad-control)
+              ("ghc-transformers-base" ,ghc-transformers-base)
+              ("ghc-vector" ,ghc-vector)))
+    (home-page "https://github.com/bos/pool")
+    (synopsis "Striped resource pooling implementation in Haskell")
+    (description "This Haskell package provides striped pooling abstraction
+for managing flexibly-sized collections of resources such as database
+connections.")
+    (license license:bsd-3)))
+
+(define-public ghc-resourcet
+  (package
+    (name "ghc-resourcet")
+    (version "1.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/resourcet/"
+                           "resourcet-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0rzjzh34s36ssign7akqjnwnjxf11c3511wk7ky0xxy0dqmc2rg7"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-mmorph" ,ghc-mmorph)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-unliftio-core" ,ghc-unliftio-core)))
+    (native-inputs
+     `(("ghc-lifted-base" ,ghc-lifted-base)
+       ("ghc-hspec" ,ghc-hspec)))
+    (home-page "https://github.com/snoyberg/conduit")
+    (synopsis "Deterministic allocation and freeing of scarce resources")
+    (description "ResourceT is a monad transformer which creates a region of
+code where you can safely allocate resources.")
+    (license license:bsd-3)))
+
+(define-public ghc-rfc5051
+  (package
+    (name "ghc-rfc5051")
+    (version "0.1.0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/rfc5051/"
+                           "rfc5051-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0av4c3qvwbkbzrjrrg601ay9pds7wscqqp2lc2z78mv2lllap3g3"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/rfc5051")
+    (synopsis "Simple unicode collation as per RFC5051")
+    (description
+     "This library implements @code{unicode-casemap}, the simple, non
+locale-sensitive unicode collation algorithm described in RFC 5051.  Proper
+unicode collation can be done using @code{text-icu}, but that is a big
+dependency that depends on a large C library, and @code{rfc5051} might be
+better for some purposes.")
+    (license license:bsd-3)))
+
+(define-public ghc-rio
+  (package
+    (name "ghc-rio")
+    (version "0.1.5.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/rio/rio-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "064h8a4hp53a479d3ak0vmqbx8hi0cpg7zn4wp23rjy26dka8p7g"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-microlens" ,ghc-microlens)
+       ("ghc-primitive" ,ghc-primitive)
+       ("ghc-typed-process" ,ghc-typed-process)
+       ("ghc-unliftio" ,ghc-unliftio)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-vector" ,ghc-vector)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/commercialhaskell/rio#readme")
+    (synopsis "A standard library for Haskell")
+    (description "This package works as a prelude replacement for Haskell,
+providing more functionality and types out of the box than the standard
+prelude (such as common data types like @code{ByteString} and
+@code{Text}), as well as removing common ``gotchas'', like partial
+functions and lazy I/O.  The guiding principle here is:
+@itemize
+@item If something is safe to use in general and has no expected naming
+conflicts, expose it.
+@item If something should not always be used, or has naming conflicts,
+expose it from another module in the hierarchy.
+@end itemize")
+    (license license:expat)))
+
+(define-public ghc-safe
+  (package
+    (name "ghc-safe")
+    (version "0.3.17")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/safe/safe-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0p3yaf5slvyz1cyy51jq64c5rlp8yzwim8iy2dlnk42if4gc9ibr"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/ndmitchell/safe#readme")
+    (synopsis "Library of safe (exception free) functions")
+    (description "This library provides wrappers around @code{Prelude} and
+@code{Data.List} functions, such as @code{head} and @code{!!}, that can throw
+exceptions.")
+    (license license:bsd-3)))
+
+(define-public ghc-safe-exceptions
+  (package
+    (name "ghc-safe-exceptions")
+    (version "0.1.7.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "safe-exceptions/safe-exceptions-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0sd0zfsm9pcll5bzzj523rbn45adjrnavdkz52hgmdjjgdcdrk8q"))))
+    (build-system haskell-build-system)
+    (arguments
+     '(#:cabal-revision
+       ("4" "0fid41gishzsyb47wzxhd5falandfirqcp760hcja81qjpfmqd32")))
+    (inputs `(("ghc-exceptions" ,ghc-exceptions)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-void" ,ghc-void)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/fpco/safe-exceptions")
+    (synopsis "Safe, consistent, and easy exception handling")
+    (description "Runtime exceptions - as exposed in @code{base} by the
+@code{Control.Exception} module - have long been an intimidating part of the
+Haskell ecosystem.  This package is intended to overcome this.  It provides a
+safe and simple API on top of the existing exception handling machinery.  The
+API is equivalent to the underlying implementation in terms of power but
+encourages best practices to minimize the chances of getting the exception
+handling wrong.")
+    (license license:expat)))
+
+(define-public ghc-safeio
+  (package
+    (name "ghc-safeio")
+    (version "0.0.5.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/safeio/"
+                           "safeio-" version ".tar.gz"))
+       (sha256
+        (base32
+         "04g3070cbjdqj0h9l9ii6470xcbn40xfv4fr89a8yvnkdim9nyfm"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-conduit" ,ghc-conduit)
+       ("ghc-conduit-combinators" ,ghc-conduit-combinators)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-resourcet" ,ghc-resourcet)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-th" ,ghc-test-framework-th)))
+    (home-page "https://github.com/luispedro/safeio")
+    (synopsis "Write output to disk atomically")
+    (description
+     "This package implements utilities to perform atomic output so as to
+avoid the problem of partial intermediate files.")
+    (license license:expat)))
+
+(define-public ghc-safesemaphore
+  (package
+    (name "ghc-safesemaphore")
+    (version "0.10.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "SafeSemaphore/SafeSemaphore-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0rpg9j6fy70i0b9dkrip9d6wim0nac0snp7qzbhykjkqlcvvgr91"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://github.com/ChrisKuklewicz/SafeSemaphore")
+    (synopsis "Exception safe semaphores")
+    (description "This library provides exception safe semaphores that can be
+used in place of @code{QSem}, @code{QSemN}, and @code{SampleVar}, all of which
+are not exception safe and can be broken by @code{killThread}.")
+    (license license:bsd-3)))
+
+(define-public ghc-sandi
+  (package
+    (name "ghc-sandi")
+    (version "0.4.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/sandi/sandi-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0dvkpk91n9kz2ha04rvp231ra9sgd1ilyc1qkzf9l03iir7zrh9b"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-stringsearch" ,ghc-stringsearch)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-tasty-th" ,ghc-tasty-th)))
+    (home-page "https://hackage.haskell.org/package/sandi")
+    (synopsis "Data encoding library")
+    (description "Reasonably fast data encoding library.")
+    (license license:bsd-3)))
+
+(define-public ghc-scientific
+  (package
+    (name "ghc-scientific")
+    (version "0.3.6.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/scientific/scientific-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "03ql2f0ac8bsl524idy9xxa3kxisb2sj3avflzw580j5hzy0m397"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-integer-logarithms" ,ghc-integer-logarithms)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-primitive" ,ghc-primitive)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-ant-xml" ,ghc-tasty-ant-xml)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-smallcheck" ,ghc-tasty-smallcheck)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+       ("ghc-smallcheck" ,ghc-smallcheck)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/basvandijk/scientific")
+    (synopsis "Numbers represented using scientific notation")
+    (description "This package provides @code{Data.Scientific}, which provides
+the number type @code{Scientific}.  Scientific numbers are arbitrary precision
+and space efficient.  They are represented using
+@uref{https://en.wikipedia.org/wiki/Scientific_notation, scientific
+notation}.")
+    (license license:bsd-3)))
+
+(define-public ghc-scientific-bootstrap
+  (package
+    (inherit ghc-scientific)
+    (name "ghc-scientific-bootstrap")
+    (arguments `(#:tests? #f))
+    (inputs
+     `(("ghc-integer-logarithms" ,ghc-integer-logarithms-bootstrap)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-primitive" ,ghc-primitive)))
+    (native-inputs '())
+    (properties '(hidden? #t))))
+
+(define-public ghc-sdl
+  (package
+    (name "ghc-sdl")
+    (version "0.6.7.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/SDL/SDL-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "00y67v80a8l09i3k76z09lg25kw72ivl09nag8ckdlk4a0cfnzfq"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("sdl" ,sdl)))
+    (home-page "https://hackage.haskell.org/package/SDL")
+    (synopsis "LibSDL for Haskell")
+    (description "Simple DirectMedia Layer (libSDL) is a cross-platform
+multimedia library designed to provide low level access to audio, keyboard,
+mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.  It is used
+by MPEG playback software, emulators, and many popular games, including the
+award winning Linux port of \"Civilization: Call To Power.\"")
+    (license license:bsd-3)))
+
+(define-public ghc-sdl2
+  (package
+    (name "ghc-sdl2")
+    (version "2.4.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "sdl2/sdl2-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0p4b12fmxps0sbnkqdfy0qw19s355yrkw7fgw6xz53wzq706k991"))))
+    (build-system haskell-build-system)
+    (arguments '(#:tests? #f)) ; tests require graphical environment
+    (inputs
+     `(("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-linear" ,ghc-linear)
+       ("ghc-statevar" ,ghc-statevar)
+       ("ghc-vector" ,ghc-vector)
+       ("sdl2" ,sdl2)))
+    (native-inputs
+     `(("ghc-weigh" ,ghc-weigh)
+       ("pkg-config" ,pkg-config)))
+    (home-page "http://hackage.haskell.org/package/sdl2")
+    (synopsis "High- and low-level bindings to the SDL library")
+    (description
+     "This package contains bindings to the SDL 2 library, in both high- and
+low-level forms.  The @code{SDL} namespace contains high-level bindings, where
+enumerations are split into sum types, and we perform automatic
+error-checking.  The @code{SDL.Raw} namespace contains an almost 1-1
+translation of the C API into Haskell FFI calls.  As such, this does not
+contain sum types nor error checking.  Thus this namespace is suitable for
+building your own abstraction over SDL, but is not recommended for day-to-day
+programming.")
+    (license license:bsd-3)))
+
+(define-public ghc-sdl2-image
+  (package
+    (name "ghc-sdl2-image")
+    (version "2.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/sdl2-image/"
+                           "sdl2-image-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1pr6dkg73cy9z0w54lrkj9c5bhxj56nl92lxikjy8kz6nyr455rr"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-sdl2" ,ghc-sdl2)
+       ("sdl2-image" ,sdl2-image)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (home-page "http://hackage.haskell.org/package/sdl2-image")
+    (synopsis "Bindings to SDL2_image")
+    (description "This package provides Haskell bindings to
+@code{SDL2_image}.")
+    (license license:expat)))
+
+(define-public ghc-sdl2-mixer
+  (package
+    (name "ghc-sdl2-mixer")
+    (version "1.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/sdl2-mixer/"
+                           "sdl2-mixer-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1k8avyccq5l9z7bwxigim312yaancxl1sr3q6a96bcm7pnhiak0g"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-data-default-class" ,ghc-data-default-class)
+       ("ghc-lifted-base" ,ghc-lifted-base)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-sdl2" ,ghc-sdl2)
+       ("ghc-vector" ,ghc-vector)
+       ("sdl2-mixer" ,sdl2-mixer)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (home-page "http://hackage.haskell.org/package/sdl2-mixer")
+    (synopsis "Bindings to SDL2 mixer")
+    (description "This package provides Haskell bindings to
+@code{SDL2_mixer}.")
+    (license license:bsd-3)))
+
+(define-public ghc-sdl-image
+  (package
+    (name "ghc-sdl-image")
+    (version "0.6.2.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/SDL-image/SDL-image-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1gxwrvswgwjw6g7ym52gik22l9l3ljy592phv97jdmcf3gi6qcg1"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:configure-flags
+       (let* ((sdl-image (assoc-ref %build-inputs "sdl-image"))
+              (sdl-image-include (string-append sdl-image "/include/SDL")))
+         (list (string-append "--extra-include-dirs=" sdl-image-include)))))
+    (inputs
+     `(("ghc-sdl" ,ghc-sdl)
+       ("sdl-image" ,sdl-image)))
+    (home-page "https://hackage.haskell.org/package/SDL-image")
+    (synopsis "Haskell bindings to libSDL_image")
+    (description "SDL_image is an image file loading library.  It loads images
+as SDL surfaces, and supports the following formats: BMP, GIF, JPEG, LBM, PCX,
+PNG, PNM, TGA, TIFF, XCF, XPM, XV.")
+    (license license:bsd-3)))
+
+(define-public ghc-sdl-mixer
+  (package
+    (name "ghc-sdl-mixer")
+    (version "0.6.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/SDL-mixer/SDL-mixer-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0k26hqgdh789ka3mv4dsk6rin6x6vwcs6hjmnsqq7j3mnrh1342r"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:configure-flags
+       (let* ((sdl-mixer (assoc-ref %build-inputs "sdl-mixer"))
+              (sdl-mixer-include (string-append sdl-mixer "/include/SDL")))
+         (list (string-append "--extra-include-dirs=" sdl-mixer-include)))))
+    (inputs
+     `(("ghc-sdl" ,ghc-sdl)
+       ("sdl-mixer" ,sdl-mixer)))
+    (home-page "https://hackage.haskell.org/package/SDL-mixer")
+    (synopsis "Haskell bindings to libSDL_mixer")
+    (description "SDL_mixer is a sample multi-channel audio mixer library.  It
+supports any number of simultaneously playing channels of 16 bit stereo audio,
+plus a single channel of music, mixed by the popular MikMod MOD, Timidity
+MIDI, Ogg Vorbis, and SMPEG MP3 libraries.")
+    (license license:bsd-3)))
+
+(define-public ghc-securemem
+  (package
+    (name "ghc-securemem")
+    (version "0.1.10")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "securemem-" version "/"
+                           "securemem-" version ".tar.gz"))
+       (sha256
+        (base32
+         "19hnw2cfbsfjynxq1bq9f6djbxhsc1k751ml0y1ab3ah913mm29j"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-byteable" ,ghc-byteable)
+              ("ghc-memory" ,ghc-memory)))
+    (home-page "https://github.com/vincenthz/hs-securemem")
+    (synopsis "Auto-scrubbing and const-time-eq memory chunk abstraction for
+Haskell")
+    (description "SecureMem is similar to ByteString, except that it provides
+a memory chunk that will be auto-scrubbed after it run out of scope.")
+    (license license:bsd-3)))
+
+(define-public ghc-semigroupoids
+  (package
+    (name "ghc-semigroupoids")
+    (version "5.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/semigroupoids/semigroupoids-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "17i96y4iqj8clcs090lf6k0ij3j16nj14vsfwz0mm9nd6i4gbpp4"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("4" "0pqfrxzypjq6z8lgdkzq4vhcyqkpk5326hny0r6snpc3gm78r4ij")))
+    (inputs
+     `(("ghc-base-orphans" ,ghc-base-orphans)
+       ("ghc-transformers-compat" ,ghc-transformers-compat)
+       ("ghc-bifunctors" ,ghc-bifunctors)
+       ("ghc-comonad" ,ghc-comonad)
+       ("ghc-contravariant" ,ghc-contravariant)
+       ("ghc-distributive" ,ghc-distributive)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)))
+    (native-inputs
+     `(("cabal-doctest" ,cabal-doctest)
+       ("ghc-doctest" ,ghc-doctest)))
+    (home-page "https://github.com/ekmett/semigroupoids")
+    (synopsis "Semigroupoids operations for Haskell")
+    (description "This library provides a wide array of (semi)groupoids and
+operations for working with them.  A @code{Semigroupoid} is a @code{Category}
+without the requirement of identity arrows for every object in the category.
+A @code{Category} is any @code{Semigroupoid} for which the Yoneda lemma holds.
+Finally, to work with these weaker structures it is beneficial to have
+containers that can provide stronger guarantees about their contents, so
+versions of @code{Traversable} and @code{Foldable} that can be folded with
+just a @code{Semigroup} are added.")
+    (license license:bsd-3)))
+
+(define-public ghc-semigroups
+  (package
+    (name "ghc-semigroups")
+    (version "0.18.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/semigroups/semigroups-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "17g29h62g1k51ghhvzkw72zksjgi6vs6bfipkj81pqw1dsprcamb"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-nats" ,ghc-nats)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-hashable" ,ghc-hashable)))
+    (home-page "https://github.com/ekmett/semigroups/")
+    (synopsis "Semigroup operations for Haskell")
+    (description "This package provides semigroups for Haskell.  In
+mathematics, a semigroup is an algebraic structure consisting of a set
+together with an associative binary operation.  A semigroup generalizes a
+monoid in that there might not exist an identity element.  It
+also (originally) generalized a group (a monoid with all inverses) to a type
+where every element did not have to have an inverse, thus the name
+semigroup.")
+    (license license:bsd-3)))
+
+(define-public ghc-semigroups-bootstrap
+  (package
+    (inherit ghc-semigroups)
+    (name "ghc-semigroups-bootstrap")
+    (inputs
+     `(("ghc-nats" ,ghc-nats-bootstrap)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-unordered-containers" ,ghc-unordered-containers-bootstrap)
+       ("ghc-hashable" ,ghc-hashable-bootstrap)))
+    (properties '(hidden? #t))))
+
+(define-public ghc-setenv
+  (package
+    (name "ghc-setenv")
+    (version "0.1.1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/setenv/setenv-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0cnbgrvb9byyahb37zlqrj05rj25v190crgcw8wmlgf0mwwxyn73"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/setenv")
+    (synopsis "Library for setting environment variables")
+    (description "This package provides a Haskell library for setting
+environment variables.")
+    (license license:expat)))
+
+(define-public ghc-setlocale
+  (package
+    (name "ghc-setlocale")
+    (version "1.0.0.8")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/setlocale-"
+                    version "/setlocale-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0sdrsmkhw08483d73ysgm2926fdbhii61br03lqpqw0lfzj4ilbd"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/setlocale")
+    (synopsis "Haskell bindings to setlocale")
+    (description "This package provides Haskell bindings to the
+@code{setlocale} C function.")
+    (license license:bsd-3)))
+
+(define-public ghc-shakespeare
+  (package
+    (name "ghc-shakespeare")
+    (version "2.0.15")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "shakespeare-" version "/"
+                           "shakespeare-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1vk4b19zvwy4mpwaq9z3l3kfmz75gfyf7alhh0y112gspgpccm23"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-aeson" ,ghc-aeson)
+              ("ghc-blaze-markup" ,ghc-blaze-markup)
+              ("ghc-blaze-html" ,ghc-blaze-html)
+              ("ghc-exceptions" ,ghc-exceptions)
+              ("ghc-vector" ,ghc-vector)
+              ("ghc-unordered-containers" ,ghc-unordered-containers)
+              ("ghc-scientific" ,ghc-scientific)))
+    (native-inputs `(("ghc-hspec" ,ghc-hspec)
+                     ("ghc-hunit" ,ghc-hunit)
+                     ("hspec-discover" ,hspec-discover)))
+    (home-page "https://www.yesodweb.com/book/shakespearean-templates")
+    (synopsis "Family of type-safe template languages for Haskell")
+    (description "This Haskell package provides a family of type-safe
+templates with simple variable interpolation.  Shakespeare templates can
+be used inline with a quasi-quoter or in an external file and it
+interpolates variables according to the type being inserted.")
+    (license license:expat)))
+
+(define-public ghc-shelly
+  (package
+    (name "ghc-shelly")
+    (version "1.8.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/shelly/shelly-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "023fbvbqs5gdwm30j5517gbdcc7fvz0md70dgwgpypkskj3i926y"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-unix-compat" ,ghc-unix-compat)
+       ("ghc-system-filepath-bootstrap" ,ghc-system-filepath-bootstrap)
+       ("ghc-system-fileio-bootstrap" ,ghc-system-fileio-bootstrap)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-lifted-base" ,ghc-lifted-base)
+       ("ghc-lifted-async" ,ghc-lifted-async)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-enclosed-exceptions" ,ghc-enclosed-exceptions)
+       ("ghc-async" ,ghc-async)
+       ("ghc-transformers-base" ,ghc-transformers-base)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-hspec-contrib" ,ghc-hspec-contrib)))
+    (home-page "https://github.com/yesodweb/Shelly.hs")
+    (synopsis "Shell-like (systems) programming in Haskell")
+    (description
+     "Shelly provides convenient systems programming in Haskell, similar in
+spirit to POSIX shells.  Shelly is originally forked  from the Shellish package.")
+    (license license:bsd-3)))
+
+(define-public ghc-silently
+  (package
+    (name "ghc-silently")
+    (version "1.2.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/silently/silently-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0f9qm3f7y0hpxn6mddhhg51mm1r134qkvd2kr8r6192ka1ijbxnf"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f)) ;; circular dependency with nanospec
+    ;; (inputs
+    ;;  `(("ghc-temporary" ,ghc-temporary)))
+    (home-page "https://github.com/hspec/silently")
+    (synopsis "Prevent writing to stdout")
+    (description "This package provides functions to prevent or capture
+writing to stdout and other handles.")
+    (license license:bsd-3)))
+
+(define-public ghc-simple-reflect
+  (package
+    (name "ghc-simple-reflect")
+    (version "0.3.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/simple-reflect/simple-reflect-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0ayvrx5cm8n6db21jiyjmk5h93pw7cz1707hih09hlhk9jh5x0h7"))))
+    (build-system haskell-build-system)
+    (home-page
+     "https://twanvl.nl/blog/haskell/simple-reflection-of-expressions")
+    (synopsis
+     "Simple reflection of expressions containing variables")
+    (description
+     "This package allows simple reflection of expressions containing
+variables.  Reflection here means that a Haskell expression is turned into a
+string.  The primary aim of this package is teaching and understanding; there
+are no options for manipulating the reflected expressions beyond showing
+them.")
+    (license license:bsd-3)))
+
+(define-public ghc-simple-sendfile
+  (package
+    (name "ghc-simple-sendfile")
+    (version "0.2.27")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "simple-sendfile-" version "/"
+                           "simple-sendfile-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1bwwqzcm56m2w4ymsa054sxmpbj76h9pvb0jf8zxp8lr41cp51gn"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-conduit" ,ghc-conduit)
+       ("ghc-conduit-extra" ,ghc-conduit-extra)
+       ("ghc-network" ,ghc-network)
+       ("ghc-resourcet" ,ghc-resourcet)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://github.com/kazu-yamamoto/simple-sendfile")
+    (synopsis "Cross platform library for the sendfile system call")
+    (description "This library tries to call minimum system calls which
+are the bottleneck of web servers.")
+    (license license:bsd-3)))
+
+(define-public ghc-skylighting-core
+  (package
+    (name "ghc-skylighting-core")
+    (version "0.7.2")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "skylighting-core/skylighting-core-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "066fwmwsd7xcvwlinfk2izlzq0xp8697i6lnbgsbl71jdybyackq"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
+       ("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-base64-bytestring" ,ghc-base64-bytestring)
+       ("ghc-blaze-html" ,ghc-blaze-html)
+       ("ghc-case-insensitive" ,ghc-case-insensitive)
+       ("ghc-colour" ,ghc-colour)
+       ("ghc-hxt" ,ghc-hxt)
+       ("ghc-regex-pcre-builtin" ,ghc-regex-pcre-builtin)
+       ("ghc-safe" ,ghc-safe)
+       ("ghc-utf8-string" ,ghc-utf8-string)))
+    (native-inputs
+     `(("ghc-diff" ,ghc-diff)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-pretty-show" ,ghc-pretty-show)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-golden" ,ghc-tasty-golden)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (home-page "https://github.com/jgm/skylighting")
+    (synopsis "Syntax highlighting library")
+    (description "Skylighting is a syntax highlighting library with support
+for over one hundred languages.  It derives its tokenizers from XML syntax
+definitions used by KDE's @code{KSyntaxHighlighting} framework, so any syntax
+supported by that framework can be added.  An optional command-line program is
+provided.  Skylighting is intended to be the successor to highlighting-kate.")
+    (license license:gpl2)))
+
+(define-public ghc-skylighting
+  (package
+    (inherit ghc-skylighting-core)
+    (name "ghc-skylighting")
+    (version "0.7.2")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/skylighting-"
+                                  version "/skylighting-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1rh3z1a7a4clvksdw1qlpmhxqkfahwypi70k91whgfamzsqpxdch"))))
+    (inputs
+     `(("ghc-skylighting-core" ,ghc-skylighting-core)
+       ,@(package-inputs ghc-skylighting-core)))))
+
+(define-public ghc-smallcheck
+  (package
+    (name "ghc-smallcheck")
+    (version "1.1.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/smallcheck/smallcheck-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "195fj7w3v03d1y1nm2ylavzrwxjcdbq0lb6zsw1dwyx5jmwfc84h"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-logict" ,ghc-logict)))
+    (home-page
+     "https://github.com/feuerbach/smallcheck")
+    (synopsis "Property-based testing library")
+    (description "SmallCheck is a testing library that allows to verify
+properties for all test cases up to some depth.  The test cases are generated
+automatically by SmallCheck.")
+    (license license:bsd-3)))
+
+(define-public ghc-socks
+  (package
+    (name "ghc-socks")
+    (version "0.5.6")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "socks/socks-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0f44qy74i0n6ll3jym0a2ipafkpw1h67amcpqmj8iq95h21wsqzs"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-cereal" ,ghc-cereal)
+       ("ghc-network" ,ghc-network)))
+    (home-page "https://github.com/vincenthz/hs-socks")
+    (synopsis "SOCKS proxy (version 5) implementation")
+    (description
+     "This library provides a SOCKS proxy (version 5) implementation.")
+    (license license:bsd-3)))
+
+(define-public ghc-split
+  (package
+    (name "ghc-split")
+    (version "0.2.3.3")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/split/split-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "04qlmkcyklznl03gsjg95b4nzb6i96gdapqg60rny9szgi7ngk8x"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://hackage.haskell.org/package/split")
+    (synopsis "Combinator library for splitting lists")
+    (description "This package provides a collection of Haskell functions for
+splitting lists into parts, akin to the @code{split} function found in several
+mainstream languages.")
+    (license license:bsd-3)))
+
+(define-public ghc-statevar
+  (package
+    (name "ghc-statevar")
+    (version "1.1.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/StateVar/StateVar-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "08r2iw0gdmfs4f6wraaq19vfmkjdbics3dbhw39y7mdjd98kcr7b"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/StateVar")
+    (synopsis "State variables for Haskell")
+    (description "This package provides state variables, which are references
+in the @code{IO} monad, like @code{IORef}s or parts of the OpenGL state.")
+    (license license:bsd-3)))
+
+(define-public ghc-statistics
+  (package
+    (name "ghc-statistics")
+    (version "0.14.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "statistics-" version "/"
+                           "statistics-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0y27gafkib0x0fn39qfn2rkgsfrm09ng35sbb5dwr7rclhnxz59l"))))
+    (build-system haskell-build-system)
+    (arguments
+     '(#:cabal-revision
+       ("2" "1bx70yqkn62ii17fjv3pig4hklrzkqd09zj67zzjiyjzmn04fir3")
+       ;; Two tests fail: "Discrete CDF is OK" and "Quantile is CDF inverse".
+       #:tests? #f))
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-base-orphans" ,ghc-base-orphans)
+       ("ghc-erf" ,ghc-erf)
+       ("ghc-math-functions" ,ghc-math-functions)
+       ("ghc-monad-par" ,ghc-monad-par)
+       ("ghc-mwc-random" ,ghc-mwc-random)
+       ("ghc-primitive" ,ghc-primitive)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-vector-algorithms" ,ghc-vector-algorithms)
+       ("ghc-vector-th-unbox" ,ghc-vector-th-unbox)
+       ("ghc-vector-binary-instances" ,ghc-vector-binary-instances)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-ieee754" ,ghc-ieee754)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://github.com/bos/mwc-random")
+    (synopsis "Haskell library of statistical types, data, and functions")
+    (description "This library provides a number of common functions
+and types useful in statistics.  We focus on high performance, numerical
+robustness, and use of good algorithms.  Where possible, we provide references
+to the statistical literature.
+
+The library's facilities can be divided into four broad categories:
+
+@itemize
+@item Working with widely used discrete and continuous probability
+distributions.  (There are dozens of exotic distributions in use; we focus
+on the most common.)
+
+@item Computing with sample data: quantile estimation, kernel density
+estimation, histograms, bootstrap methods, significance testing,
+and regression and autocorrelation analysis.
+
+@item Random variate generation under several different distributions.
+
+@item Common statistical tests for significant differences between samples.
+@end itemize")
+    (license license:bsd-2)))
+
+(define-public ghc-stm-chans
+  (package
+    (name "ghc-stm-chans")
+    (version "3.0.0.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "stm-chans-" version "/"
+                           "stm-chans-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0f27sp09yha43xk9q55sc185jyjs5h7gq2dhsyx6bm9kz9dzqi13"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/stm-chans")
+    (synopsis "Additional types of channels for ghc-stm")
+    (description "This Haskell package offers a collection of channel types,
+similar to @code{Control.Concurrent.STM.@{TChan,TQueue@}} but with additional
+features.")
+    (license license:bsd-3)))
+
+(define-public ghc-stm-conduit
+  (package
+    (name "ghc-stm-conduit")
+    (version "4.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/stm-conduit/"
+                           "stm-conduit-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0paapljn7nqfzrx889y0n8sszci38mdiaxkgr0bb00ph9246rr7z"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-stm-chans" ,ghc-stm-chans)
+       ("ghc-cereal" ,ghc-cereal)
+       ("ghc-cereal-conduit" ,ghc-cereal-conduit)
+       ("ghc-conduit" ,ghc-conduit)
+       ("ghc-conduit-extra" ,ghc-conduit-extra)
+       ("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-async" ,ghc-async)
+       ("ghc-monad-loops" ,ghc-monad-loops)
+       ("ghc-unliftio" ,ghc-unliftio)))
+    (native-inputs
+     `(("ghc-doctest" ,ghc-doctest)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
+    (home-page "https://github.com/cgaebel/stm-conduit")
+    (synopsis "Introduces conduits to channels and promotes using conduits concurrently")
+    (description
+     "This package provides two simple conduit wrappers around STM channels: a
+source and a sink.")
+    (license license:bsd-3)))
+
+(define-public ghc-stmonadtrans
+  (package
+    (name "ghc-stmonadtrans")
+    (version "0.4.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/STMonadTrans"
+                           "/STMonadTrans-" version ".tar.gz"))
+       (sha256
+        (base32 "1nr26fnmi5fdjc6d00w13kjhmfyvb5b837d0006w4dj0yxndaksp"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/STMonadTrans")
+    (synopsis "Monad transformer version of the ST monad")
+    (description
+     "This package provides a monad transformer version of the @code{ST} monad
+for strict state threads.")
+    (license license:bsd-3)))
+
+(define-public ghc-storable-complex
+  (package
+    (name "ghc-storable-complex")
+    (version "0.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/storable-complex/storable-complex-"
+             version ".tar.gz"))
+       (sha256
+        (base32 "01kwwkpbfjrv26vj83cd92px5qbq1bpgxj0r45534aksqhany1xb"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/cartazio/storable-complex")
+    (synopsis "Haskell Storable instance for Complex")
+    (description "This package provides a Haskell library including a
+Storable instance for Complex which is binary compatible with C99, C++
+and Fortran complex data types.")
+    (license license:bsd-3)))
+
+(define-public ghc-storable-record
+  (package
+    (name "ghc-storable-record")
+    (version "0.0.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/storable-record/"
+         "storable-record-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0hjs1km0fc9ch0i1rbycxia5w3939hk4p4md73ikgg4aipqb5zyf"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-utility-ht" ,ghc-utility-ht)
+       ("ghc-storablevector" ,ghc-storablevector)
+       ("ghc-timeit" ,ghc-timeit)))
+    (home-page "https://hackage.haskell.org/package/storable-record")
+    (synopsis "Elegant definition of Storable instances for records")
+    (description "With this package you can build a Storable instance of
+a record type from Storable instances of its elements in an elegant way.
+It does not do any magic, just a bit arithmetic to compute the right
+offsets, that would be otherwise done manually or by a preprocessor like
+C2HS.  There is no guarantee that the generated memory layout is
+compatible with that of a corresponding C struct.  However, the module
+generates the smallest layout that is possible with respect to the
+alignment of the record elements.")
+    (license license:bsd-3)))
+
+(define-public ghc-storable-tuple
+  (package
+    (name "ghc-storable-tuple")
+    (version "0.0.3.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/storable-tuple/"
+         "storable-tuple-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0dfzhxgkn1l6ls7zh6iifhyvhm8l47n40z0ar23c6ibsa94w1ynw"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-storable-record" ,ghc-storable-record)
+       ("ghc-utility-ht" ,ghc-utility-ht)
+       ("ghc-base-orphans" ,ghc-base-orphans)))
+    (home-page "https://hackage.haskell.org/package/storable-tuple")
+    (synopsis "Storable instance for pairs and triples")
+    (description "This package provides a Storable instance for pairs
+and triples which should be binary compatible with C99 and C++.  The
+only purpose of this package is to provide a standard location for this
+instance so that other packages needing this instance can play nicely
+together.")
+    (license license:bsd-3)))
+
+(define-public ghc-storablevector
+  (package
+    (name "ghc-storablevector")
+    (version "0.2.13")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/storablevector/storablevector-"
+         version ".tar.gz"))
+       (sha256
+        (base32
+         "1zmr738vwnhnyxbikayqnaz31ilv2qlmscp6iqgl7adcfbal4dzq"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-non-negative" ,ghc-non-negative)
+       ("ghc-utility-ht" ,ghc-utility-ht)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-unsafe" ,ghc-unsafe)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-syb" ,ghc-syb)))
+    (home-page "https://www.haskell.org/haskellwiki/Storable_Vector")
+    (synopsis "Fast, packed, strict storable arrays with a list interface")
+    (description "This library provides fast, packed, strict storable
+arrays with a list interface, a chunky lazy list interface with variable
+chunk size and an interface for write access via the ST monad.  This is
+much like bytestring and binary but can be used for every
+@code{Foreign.Storable.Storable} type.  See also
+@url{http://hackage.haskell.org/package/vector}, a library with a
+similar intention.
+
+This library does not do advanced fusion optimization, since especially
+for lazy vectors this would either be incorrect or not applicable.  See
+@url{http://hackage.haskell.org/package/storablevector-streamfusion} for
+a library that provides fusion with lazy lists.")
+    (license license:bsd-3)))
+
+(define-public ghc-streaming-commons
+  (package
+    (name "ghc-streaming-commons")
+    (version "0.2.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "streaming-commons/streaming-commons-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1lmyx3wkjsayhy5yilzvy0kf8qwmycwlk26r1d8f3cxbfhkr7s52"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-async" ,ghc-async)
+       ("ghc-blaze-builder" ,ghc-blaze-builder)
+       ("ghc-network" ,ghc-network)
+       ("ghc-random" ,ghc-random)
+       ("ghc-zlib" ,ghc-zlib)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://hackage.haskell.org/package/streaming-commons")
+    (synopsis "Conduit and pipes needed by some streaming data libraries")
+    (description "This package provides low-dependency functionality commonly
+needed by various Haskell streaming data libraries, such as @code{conduit} and
+@code{pipe}s.")
+    (license license:expat)))
+
+(define-public ghc-strict
+  (package
+    (name "ghc-strict")
+    (version "0.3.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/strict/strict-"
+                           version ".tar.gz"))
+       (sha256
+        (base32 "08cjajqz9h47fkq98mlf3rc8n5ghbmnmgn8pfsl3bdldjdkmmlrc"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/strict")
+    (synopsis "Strict data types and String IO")
+    (description
+     "This package provides strict versions of some standard Haskell data
+types, such as pairs, @code{Maybe} and @code{Either}.  It also contains strict
+IO operations.")
+    (license license:bsd-3)))
+
+(define-public ghc-stringbuilder
+  (package
+    (name "ghc-stringbuilder")
+    (version "0.5.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/stringbuilder/stringbuilder-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1fh3csx1wcssn8xyvl4ip4aprh9l4qyz2kk8mgjvqvc0vb2bsy6q"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f)) ; FIXME: circular dependencies with tests
+                               ; enabled
+    (home-page "https://hackage.haskell.org/package/stringbuilder")
+    (synopsis "Writer monad for multi-line string literals")
+    (description "This package provides a writer monad for multi-line string
+literals.")
+    (license license:expat)))
+
+(define-public ghc-string-qq
+  (package
+    (name "ghc-string-qq")
+    (version "0.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/string-qq/string-qq-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0662m3i5xrdrr95w829bszkhp88mj9iy1zya54vk2sl5hz9wlmwp"))))
+    (build-system haskell-build-system)
+    (home-page "http://hackage.haskell.org/package/string-qq")
+    (synopsis
+     "QuasiQuoter for non-interpolated strings, texts and bytestrings.")
+    (description
+     "This package provides a quasiquoter for non-interpolated strings, texts
+and bytestrings.")
+    (license license:public-domain)))
+
+(define-public ghc-stringsearch
+  (package
+    (name "ghc-stringsearch")
+    (version "0.3.6.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/stringsearch/stringsearch-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0jpy9xjcjdbpi3wk6mg7xwd7wfi2mma70p97v1ij5i8bj9qijpr9"))))
+    (build-system haskell-build-system)
+    (home-page "https://bitbucket.org/dafis/stringsearch")
+    (synopsis "Fast searching, splitting and replacing of ByteStrings")
+    (description "This package provides several functions to quickly search
+for substrings in strict or lazy @code{ByteStrings}.  It also provides
+functions for breaking or splitting on substrings and replacing all
+occurrences of a substring (the first in case of overlaps) with another.")
+    (license license:bsd-3)))
+
+(define-public ghc-stylish-haskell
+  (package
+    (name "ghc-stylish-haskell")
+    (version "0.9.2.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (string-append
+               "mirror://hackage/package/stylish-haskell/stylish-haskell-"
+               version
+               ".tar.gz"))
+        (sha256
+          (base32
+            "1ls11fdx6snvfx8yykpidz142zzxwi5bazl49hgfqlwx50rqcp7w"))))
+    (build-system haskell-build-system)
+    (inputs
+      `(("ghc-aeson" ,ghc-aeson)
+        ("ghc-file-embed" ,ghc-file-embed)
+        ("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
+        ("ghc-semigroups" ,ghc-semigroups)
+        ("ghc-syb" ,ghc-syb)
+        ("ghc-yaml" ,ghc-yaml)
+        ("ghc-strict" ,ghc-strict)
+        ("ghc-optparse-applicative"
+         ,ghc-optparse-applicative)))
+    (native-inputs
+      `(("ghc-hunit" ,ghc-hunit)
+        ("ghc-test-framework" ,ghc-test-framework)
+        ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
+    (home-page "https://github.com/jaspervdj/stylish-haskell")
+    (synopsis "Haskell code prettifier")
+    (description "Stylish-haskell is a Haskell code prettifier.  The goal is
+not to format all of the code in a file, to avoid \"getting in the way\".
+However, this tool can e.g. clean up import statements and help doing various
+tasks that get tedious very quickly.  It can
+@itemize
+@item
+Align and sort @code{import} statements
+@item
+Group and wrap @code{{-# LANGUAGE #-}} pragmas, remove (some) redundant
+pragmas
+@item
+Remove trailing whitespaces
+@item
+Align branches in @code{case} and fields in records
+@item
+Convert line endings (customisable)
+@item
+Replace tabs by four spaces (turned off by default)
+@item
+Replace some ASCII sequences by their Unicode equivalent (turned off by
+default)
+@end itemize")
+    (license license:bsd-3)))
+
+(define-public ghc-syb
+  (package
+    (name "ghc-syb")
+    (version "0.7")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/syb/syb-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1da2zz7gqm4xbkx5vpd74dayx1svaxyl145fl14mq15lbb77sxdq"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-hunit" ,ghc-hunit)))
+    (home-page
+     "http://www.cs.uu.nl/wiki/GenericProgramming/SYB")
+    (synopsis "Scrap Your Boilerplate")
+    (description "This package contains the generics system described in the
+/Scrap Your Boilerplate/ papers (see
+@uref{http://www.cs.uu.nl/wiki/GenericProgramming/SYB, the website}).  It
+defines the @code{Data} class of types permitting folding and unfolding of
+constructor applications, instances of this class for primitive types, and a
+variety of traversals.")
+    (license license:bsd-3)))
+
+(define-public ghc-system-fileio
+  (package
+    (name "ghc-system-fileio")
+    (version "0.3.16.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/system-fileio/system-fileio-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1484hcl27s2qcby8ws5djj11q9bz68bspcifz9h5gii2ndy70x9i"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-system-filepath" ,ghc-system-filepath)
+       ("ghc-chell" ,ghc-chell)
+       ("ghc-temporary" ,ghc-temporary)))
+    (home-page "https://github.com/fpco/haskell-filesystem")
+    (synopsis "Consistent file system interaction across GHC versions")
+    (description
+     "This is a small wrapper around the directory, unix, and Win32 packages,
+for use with system-filepath.  It provides a consistent API to the various
+versions of these packages distributed with different versions of GHC.
+In particular, this library supports working with POSIX files that have paths
+which can't be decoded in the current locale encoding.")
+    (license license:expat)))
+
+;; See ghc-system-filepath-bootstrap. In addition this package depends on
+;; ghc-system-filepath.
+(define ghc-system-fileio-bootstrap
+  (package
+    (name "ghc-system-fileio-bootstrap")
+    (version "0.3.16.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/system-fileio/system-fileio-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1484hcl27s2qcby8ws5djj11q9bz68bspcifz9h5gii2ndy70x9i"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:tests? #f))
+    (inputs
+     `(("ghc-system-filepath-bootstrap" ,ghc-system-filepath-bootstrap)
+       ("ghc-temporary" ,ghc-temporary)))
+    (home-page "https://github.com/fpco/haskell-filesystem")
+    (synopsis "Consistent file system interaction across GHC versions")
+    (description
+     "This is a small wrapper around the directory, unix, and Win32 packages,
+for use with system-filepath.  It provides a consistent API to the various
+versions of these packages distributed with different versions of GHC.
+In particular, this library supports working with POSIX files that have paths
+which can't be decoded in the current locale encoding.")
+    (license license:expat)))
+
+
+(define-public ghc-system-filepath
+  (package
+    (name "ghc-system-filepath")
+    (version "0.4.14")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/system-filepath/system-filepath-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "14yras4pz2dh55xpwmazcgxijvi8913pjgzb9iw50mjq1lycwmhn"))))
+    (build-system haskell-build-system)
+    ;; FIXME: One of the tests fails:
+    ;; [ FAIL  ] tests.validity.posix
+    ;; note: seed=7310214548328823169
+    ;; *** Failed! Falsifiable (after 24 tests):
+    ;; FilePath "/r2\ENQ52\t ;$/o\US=/okG\146\&6\n<u\DC3/5\182\223a\DELN\EOT#\NUL/`[m/\USEKV\ETX([)b6/\ACK\SOo\245\ETBO/f\128\STX`|\EM\"/*\EMA\USD3/\143\&4/\CAN?\SUBee\CANR/9/B0\187Kx4/Vqr\232'b:/\a\234\DLE.\"\179/\ENQ{J/|/G)@^\237/\219ml/\DC3pd\ESC"
+    (arguments `(#:tests? #f))
+    (inputs
+     `(("ghc-chell" ,ghc-chell)
+       ("ghc-chell-quickcheck" ,ghc-chell-quickcheck)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/fpco/haskell-filesystem")
+    (synopsis "High-level, byte-based file and directory path manipulations")
+    (description
+     "Provides a FilePath datatype and utility functions for operating on it.
+Unlike the filepath package, this package does not simply reuse String,
+increasing type safety.")
+    (license license:expat)))
+
+;; Ghc-shelly depends on ghc-system-filepath and ghc-system-fileio, who in turn depend on
+;; ghc-chell and ghc-chell-quickcheck for the test phase. Ghc-chell depends on ghc-options
+;; which depends on ghc-chell and ghc-chell-quickcheck.
+;; Therefore we bootstrap it with tests disabled.
+(define ghc-system-filepath-bootstrap
+  (package
+    (name "ghc-system-filepath-bootstrap")
+    (version "0.4.14")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/system-filepath/system-filepath-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "14yras4pz2dh55xpwmazcgxijvi8913pjgzb9iw50mjq1lycwmhn"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:tests? #f))
+    (inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/fpco/haskell-filesystem")
+    (synopsis "High-level, byte-based file and directory path manipulations")
+    (description
+     "Provides a FilePath datatype and utility functions for operating on it.
+Unlike the filepath package, this package does not simply reuse String,
+increasing type safety.")
+    (license license:expat)))
+
+
+(define-public ghc-tagged
+  (package
+    (name "ghc-tagged")
+    (version "0.8.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/tagged/tagged-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "16cdzh0bw16nvjnyyy5j9s60malhz4nnazw96vxb0xzdap4m2z74"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("2" "0r2knfcq0b4s652vlvlnfwxlc2mkc2ra9kl8bp4zdn1awmfy0ia5")))
+    (inputs
+     `(("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (home-page "https://hackage.haskell.org/package/tagged")
+    (synopsis "Haskell phantom types to avoid passing dummy arguments")
+    (description "This library provides phantom types for Haskell 98, to avoid
+having to unsafely pass dummy arguments.")
+    (license license:bsd-3)))
+
+(define-public ghc-tar
+  (package
+    (name "ghc-tar")
+    (version "0.5.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/tar/tar-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0s2brvaxg5fki2jdkccmnpssiy6a3wjh24p6a3dkkdvjcixnk7f8"))))
+    (build-system haskell-build-system)
+    ;; FIXME: 2/24 tests fail.
+    (arguments `(#:tests? #f))
+    (inputs
+     `(("ghc-bytestring-handle" ,ghc-bytestring-handle)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (home-page "https://hackage.haskell.org/package/tar")
+    (synopsis "Reading, writing and manipulating \".tar\" archive files")
+    (description
+     "This library is for working with \\\"@.tar@\\\" archive files.
+It can read and write a range of common variations of the tar archive format
+including V7, POSIX USTAR and GNU formats.  It provides support for packing and
+unpacking portable archives.  This makes it suitable for distribution but not
+backup because details like file ownership and exact permissions are not
+preserved.  It also provides features for random access to archive content using
+an index.")
+    (license license:bsd-3)))
+
+(define-public ghc-temporary
+  (package
+    (name "ghc-temporary")
+    (version "1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/temporary/temporary-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "144qhwfwg37l3k313raf4ssiz16jbgwlm1nf4flgqpsbd69jji4c"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-exceptions" ,ghc-exceptions)
+       ("ghc-random" ,ghc-random)))
+    (native-inputs
+     `(("ghc-base-compat" ,ghc-base-compat)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
+    (home-page "https://www.github.com/batterseapower/temporary")
+    (synopsis "Temporary file and directory support")
+    (description "The functions for creating temporary files and directories
+in the Haskelll base library are quite limited.  This library just repackages
+the Cabal implementations of its own temporary file and folder functions so
+that you can use them without linking against Cabal or depending on it being
+installed.")
+    (license license:bsd-3)))
+
+(define-public ghc-temporary-rc
+  (package
+    (name "ghc-temporary-rc")
+    (version "1.2.0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/temporary-rc/temporary-rc-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1nqih0qks439k3pr5kmbbc8rjdw730slrxlflqb27fbxbzb8skqs"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-exceptions" ,ghc-exceptions)))
+    (home-page
+     "https://www.github.com/feuerbach/temporary")
+    (synopsis
+     "Portable temporary file and directory support")
+    (description
+     "The functions for creating temporary files and directories in the base
+library are quite limited.  The unixutils package contains some good ones, but
+they aren't portable to Windows.  This library just repackages the Cabal
+implementations of its own temporary file and folder functions so that you can
+use them without linking against Cabal or depending on it being installed.
+This is a better maintained fork of the \"temporary\" package.")
+    (license license:bsd-3)))
+
+(define-public ghc-terminal-size
+  (package
+    (name "ghc-terminal-size")
+    (version "0.3.2.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/terminal-size/"
+                    "terminal-size-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0n4nvj3dbj9gxfnprgish45asn9z4dipv9j98s8i7g2n8yb3xhmm"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/terminal-size")
+    (synopsis "Get terminal window height and width")
+    (description "Get terminal window height and width without ncurses
+dependency.")
+    (license license:bsd-3)))
+
+(define-public ghc-texmath
+  (package
+    (name "ghc-texmath")
+    (version "0.11.0.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "texmath/texmath-" version ".tar.gz"))
+              (sha256
+               (base32
+                "11dc09hfnyfsz20ch2c867w0zdgjkzq41506lm61i3dk87ngdisf"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-syb" ,ghc-syb)
+       ("ghc-network-uri" ,ghc-network-uri)
+       ("ghc-split" ,ghc-split)
+       ("ghc-temporary" ,ghc-temporary)
+       ("ghc-utf8-string" ,ghc-utf8-string)
+       ("ghc-xml" ,ghc-xml)
+       ("ghc-pandoc-types" ,ghc-pandoc-types)))
+    (home-page "https://github.com/jgm/texmath")
+    (synopsis "Conversion between formats used to represent mathematics")
+    (description
+     "The texmath library provides functions to read and write TeX math,
+presentation MathML, and OMML (Office Math Markup Language, used in Microsoft
+Office).  Support is also included for converting math formats to pandoc's
+native format (allowing conversion, via pandoc, to a variety of different
+markup formats).  The TeX reader supports basic LaTeX and AMS extensions, and
+it can parse and apply LaTeX macros.")
+    (license license:gpl2+)))
+
+(define-public ghc-text-binary
+  (package
+    (name "ghc-text-binary")
+    (version "0.2.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "text-binary/text-binary-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "18gl10pwg3qwsk0za3c70j4n6a9129wwf1b7d3a461h816yv55xn"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/kawu/text-binary")
+    (synopsis "Binary instances for text types")
+    (description
+     "This package provides a compatibility layer providing @code{Binary}
+instances for strict and lazy text types for versions older than 1.2.1 of the
+text package.")
+    (license license:bsd-2)))
+
+(define-public ghc-tf-random
+  (package
+    (name "ghc-tf-random")
+    (version "0.5")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/tf-random/tf-random-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32 "0445r2nns6009fmq0xbfpyv7jpzwv0snccjdg7hwj4xk4z0cwc1f"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-primitive" ,ghc-primitive)
+       ("ghc-random" ,ghc-random)))
+    (home-page "https://hackage.haskell.org/package/tf-random")
+    (synopsis "High-quality splittable pseudorandom number generator")
+    (description "This package contains an implementation of a high-quality
+splittable pseudorandom number generator.  The generator is based on a
+cryptographic hash function built on top of the ThreeFish block cipher.  See
+the paper \"Splittable Pseudorandom Number Generators Using Cryptographic
+Hashing\" by Claessen, Pałka for details and the rationale of the design.")
+    (license license:bsd-3)))
+
+(define-public ghc-th-abstraction
+  (package
+    (name "ghc-th-abstraction")
+    (version "0.2.8.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "th-abstraction/th-abstraction-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0n17w4q2ykd0nica4sck2wng6md56rfad8x0icl0l8vnzb9nn4ya"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/glguy/th-abstraction")
+    (synopsis "Nicer interface for reified information about data types")
+    (description
+     "This package normalizes variations in the interface for inspecting
+datatype information via Template Haskell so that packages and support a
+single, easier to use informational datatype while supporting many versions of
+Template Haskell.")
+    (license license:isc)))
+
+(define-public ghc-th-expand-syns
+  (package
+    (name "ghc-th-expand-syns")
+    (version "0.4.4.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "th-expand-syns/th-expand-syns-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "01prlvh3py5hq5ccjidfyp9ixq2zd88dkbsidyjrpkja6v8m43yc"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-syb" ,ghc-syb)))
+    (home-page "https://hackage.haskell.org/package/th-expand-syns")
+    (synopsis "Expands type synonyms in Template Haskell ASTs")
+    (description
+     "This package enables users to expand type synonyms in Template Haskell
+@dfn{abstract syntax trees} (ASTs).")
+    (license license:bsd-3)))
+
+(define-public ghc-th-lift
+  (package
+    (name "ghc-th-lift")
+    (version "0.7.11")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "th-lift/th-lift-" version ".tar.gz"))
+              (sha256
+               (base32
+                "131360zxb0hazbqwbkk6ab2p77jkxr79bwwm618mrwrwkm3x2g6m"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-th-abstraction" ,ghc-th-abstraction)))
+    (home-page "https://github.com/mboes/th-lift")
+    (synopsis "Derive Template Haskell's Lift class for datatypes")
+    (description
+     "This is a Haskell library to derive Template Haskell's Lift class for
+datatypes.")
+    (license license:bsd-3)))
+
+(define-public ghc-th-lift-instances
+  (package
+    (name "ghc-th-lift-instances")
+    (version "0.1.11")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "th-lift-instances/th-lift-instances-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1f56cp6ckcalld5jchv0kxpjkwcsixd7smd0g7r8cg67ppx6m90x"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-th-lift" ,ghc-th-lift)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/bennofs/th-lift-instances/")
+    (synopsis "Lift instances for template-haskell for common data types.")
+    (description "Most data types in the Haskell platform do not have Lift
+instances.  This package provides orphan instances for @code{containers},
+@code{text}, @code{bytestring} and @code{vector}.")
+    (license license:bsd-3)))
+
+(define-public ghc-th-orphans
+  (package
+    (name "ghc-th-orphans")
+    (version "0.13.6")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "th-orphans/th-orphans-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0sfl3pn9kq9da3ji3lsgzgzy82vz6yvsg80dmakc1jvk7awycibp"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-th-lift" ,ghc-th-lift)
+       ("ghc-th-lift-instances" ,ghc-th-lift-instances)
+       ("ghc-th-reify-many" ,ghc-th-reify-many)
+       ("ghc-generic-deriving" ,ghc-generic-deriving)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)))
+    (home-page "https://hackage.haskell.org/package/th-orphans")
+    (synopsis "Orphan instances for TH datatypes")
+    (description
+     "This package provides orphan instances for Template Haskell datatypes.  In particular,
+instances for @code{Ord} and @code{Lift}, as well as a few missing @code{Show}
+and @code{Eq} instances.  These instances used to live in the haskell-src-meta
+package, and that's where the version number started.")
+    (license license:bsd-3)))
+
 (define-public ghc-threads
   (package
     (name "ghc-threads")
@@ -248,6 +10249,1451 @@ package is similar to the @code{threadmanager}, @code{async} and
 @end itemize")
     (license license:bsd-3)))
 
+(define-public ghc-th-reify-many
+  (package
+    (name "ghc-th-reify-many")
+    (version "0.1.8")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "th-reify-many/th-reify-many-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "0hzy6hvhvcd6i60vx5cp2b7ggmnnjh9rx4h8bm8xw4grglcaxjnf"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-safe" ,ghc-safe)
+       ("ghc-th-expand-syns" ,ghc-th-expand-syns)))
+    (home-page "https://github.com/mgsloan/th-reify-many")
+    (synopsis "Recurseively reify template haskell datatype info")
+    (description
+     "th-reify-many provides functions for recursively reifying top level
+declarations.  The main intended use case is for enumerating the names of
+datatypes reachable from an initial datatype, and passing these names to some
+function which generates instances.")
+    (license license:bsd-3)))
+
+(define-public ghc-time-locale-compat
+  (package
+    (name "ghc-time-locale-compat")
+    (version "0.1.1.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "time-locale-compat/time-locale-compat-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0b2hmj8wwrfkndwzgm11qr496ca2ahwdxcj3m0ii91bxvrk1bzq7"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-old-locale" ,ghc-old-locale)))
+    (home-page "https://github.com/khibino/haskell-time-locale-compat")
+    (synopsis "Compatibility of TimeLocale between old-locale and time-1.5")
+    (description "This package contains a wrapped name module for
+@code{TimeLocale}.")
+    (license license:bsd-3)))
+
+(define-public ghc-timeit
+  (package
+    (name "ghc-timeit")
+    (version "2.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/timeit/timeit-"
+         version ".tar.gz"))
+       (sha256
+        (base32
+         "1sliqpvl501rlcj6s0lhmsf5ym24j4h881wzc1f1wdyvg3jz8kd1"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/merijn/timeit")
+    (synopsis "Time monadic computations with an IO base")
+    (description "This package provides a simple wrapper to show the
+used CPU time of monadic computation with an IO base.")
+    (license license:bsd-3)))
+
+(define-public ghc-tldr
+  (package
+    (name "ghc-tldr")
+    (version "0.4.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/tldr/tldr-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0nc581y9jjzwd8l88g48c72mla7k6q1w102akl7gl5jsk9ljamd3"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-cmark" ,ghc-cmark)
+       ("ghc-optparse-applicative" ,ghc-optparse-applicative)
+       ("ghc-typed-process" ,ghc-typed-process)
+       ("ghc-semigroups" ,ghc-semigroups)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-golden" ,ghc-tasty-golden)))
+    (home-page "https://github.com/psibi/tldr-hs#readme")
+    (synopsis "Haskell tldr client")
+    (description "This package provides the @command{tldr} command and a
+Haskell client library allowing users to update and view @code{tldr} pages
+from a shell.  The @code{tldr} pages are a community effort to simplify the
+man pages with practical examples.")
+    (license license:bsd-3)))
+
+(define-public ghc-transformers-base
+  (package
+    (name "ghc-transformers-base")
+    (version "0.4.5.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/transformers-base/transformers-base-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1s256bi0yh0x2hp2gwd30f3mg1cv53zz397dv1yhfsnfzmihrj6h"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-transformers-compat" ,ghc-transformers-compat)))
+    (home-page
+     "https://hackage.haskell.org/package/transformers-compat")
+    (synopsis
+     "Backported transformer library")
+    (description
+     "Backported versions of types that were added to transformers in
+transformers 0.3 and 0.4 for users who need strict transformers 0.2 or 0.3
+compatibility to run on old versions of the platform.")
+    (license license:bsd-3)))
+
+(define-public ghc-transformers-compat
+  (package
+    (name "ghc-transformers-compat")
+    (version "0.6.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/transformers-compat"
+             "/transformers-compat-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1gp4a8kvniwgm8947ghb4iwv4b7wd6ry4kvv4nfnym4agf5j41nw"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/ekmett/transformers-compat/")
+    (synopsis "Small compatibility shim between transformers 0.3 and 0.4")
+    (description "This package includes backported versions of types that were
+added to transformers in transformers 0.3 and 0.4 for users who need strict
+transformers 0.2 or 0.3 compatibility to run on old versions of the platform,
+but also need those types.")
+    (license license:bsd-3)))
+
+(define-public ghc-tree-diff
+  (package
+    (name "ghc-tree-diff")
+    (version "0.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/tree-diff/tree-diff-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "049v44c520jy3icxlnrvbdblh3mjmvd7m6qmkzxbzkf02x63xqmz"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("4" "1rqxxyj6hqllahs11693g855cxz8mgnb490s7j1ksd300i5xgjsp")
+       #:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "tree-diff.cabal"
+               (("trifecta             >=1\\.7\\.1\\.1  && <1\\.8")
+                "trifecta             >=1.7.1.1  && <=2")))))))
+    (inputs
+     `(("ghc-aeson" ,ghc-aeson)
+       ("ghc-ansi-wl-pprint" ,ghc-ansi-wl-pprint)
+       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
+       ("ghc-base-compat" ,ghc-base-compat)
+       ("ghc-generics-sop" ,ghc-generics-sop)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-memotrie" ,ghc-memotrie)
+       ("ghc-parsers" ,ghc-parsers)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-scientific" ,ghc-scientific)
+       ("ghc-tagged" ,ghc-tagged)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-uuid-types" ,ghc-uuid-types)
+       ("ghc-vector" ,ghc-vector)))
+    (native-inputs
+     `(("ghc-base-compat" ,ghc-base-compat)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
+       ("ghc-ansi-wl-pprint" ,ghc-ansi-wl-pprint)
+       ("ghc-trifecta" ,ghc-trifecta)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-golden" ,ghc-tasty-golden)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (home-page "https://github.com/phadej/tree-diff")
+    (synopsis "Compute difference between (expression) trees")
+    (description "This Haskell library provides a function for computing
+the difference between (expression) trees.  It also provides a way to
+compute the difference between arbitrary abstract datatypes (ADTs) using
+@code{Generics}-derivable helpers.")
+    (license license:bsd-3)))
+
+(define-public ghc-trifecta
+  (package
+    (name "ghc-trifecta")
+    (version "2")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/trifecta/"
+                    "trifecta-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0hznd8i65s81xy13i2qc7cvipw3lfb2yhkv53apbdsh6sbljz5sk"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f)) ; doctest suite fails to build on i686
+    (inputs
+     `(("ghc-reducers" ,ghc-reducers)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-ansi-wl-pprint" ,ghc-ansi-wl-pprint)
+       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
+       ("ghc-blaze-builder" ,ghc-blaze-builder)
+       ("ghc-blaze-html" ,ghc-blaze-html)
+       ("ghc-blaze-markup" ,ghc-blaze-markup)
+       ("ghc-charset" ,ghc-charset)
+       ("ghc-comonad" ,ghc-comonad)
+       ("ghc-fingertree" ,ghc-fingertree)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-lens" ,ghc-lens)
+       ("ghc-parsers" ,ghc-parsers)
+       ("ghc-profunctors" ,ghc-profunctors)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-utf8-string" ,ghc-utf8-string)))
+    (native-inputs
+     `(("cabal-doctest" ,cabal-doctest)
+       ("ghc-doctest" ,ghc-doctest)
+       ("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/ekmett/trifecta/")
+    (synopsis "Parser combinator library with convenient diagnostics")
+    (description "Trifecta is a modern parser combinator library for Haskell,
+with slicing and Clang-style colored diagnostics.")
+    (license license:bsd-3)))
+
+(define-public ghc-tuple-th
+  (package
+    (name "ghc-tuple-th")
+    (version "0.2.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "tuple-th-" version "/"
+                           "tuple-th-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1mrl4vvxmby7sf1paf7hklzidnr6wq55822i73smqyz0xpf3gsjn"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/DanielSchuessler/tuple-th")
+    (synopsis "Generate utility functions for tuples of statically known size
+for Haskell")
+    (description "This Haskell package contains Template Haskell functions for
+generating functions similar to those in @code{Data.List} for tuples of
+statically known size.")
+    (license license:bsd-3)))
+
+(define-public ghc-typed-process
+  (package
+    (name "ghc-typed-process")
+    (version "0.2.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "typed-process/typed-process-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0j36vrc9w841m5qbwqra1lwiznx31xfnhin1sm8x2c2739csbpn0"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-async" ,ghc-async)))
+    (native-inputs
+     `(("ghc-base64-bytestring" ,ghc-base64-bytestring)
+       ("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)
+       ("ghc-temporary" ,ghc-temporary)))
+    (home-page "https://haskell-lang.org/library/typed-process")
+    (synopsis "Run external processes with strong typing of streams")
+    (description
+     "This library provides the ability to launch and interact with external
+processes.  It wraps around the @code{process} library, and intends to improve
+upon it.")
+    (license license:expat)))
+
+(define-public ghc-unbounded-delays
+  (package
+    (name "ghc-unbounded-delays")
+    (version "0.1.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/unbounded-delays/unbounded-delays-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1ir9fghbrc214c97bwafk5ck6cacxz1pdnq4i18p604d1b8zg9wa"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/basvandijk/unbounded-delays")
+    (synopsis "Unbounded thread delays and timeouts")
+    (description "The @code{threadDelay} and @code{timeout} functions from the
+Haskell base library use the bounded @code{Int} type for specifying the delay
+or timeout period.  This package provides alternative functions which use the
+unbounded @code{Integer} type.")
+    (license license:bsd-3)))
+
+(define-public ghc-unexceptionalio
+  (package
+    (name "ghc-unexceptionalio")
+    (version "0.4.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "unexceptionalio-" version "/" "unexceptionalio-"
+                           version ".tar.gz"))
+       (sha256 (base32 "09gynk472l7nn5l2w320n4dwigwp0wh0shfp6dyw6r5h2jdxz18p"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/singpolyma/unexceptionalio")
+    (synopsis "IO without any non-error, synchronous exceptions")
+    (description "When you've caught all the exceptions that can be
+handled safely, this is what you're left with.")
+    (license license:isc)))
+
+(define-public ghc-union-find
+  (package
+    (name "ghc-union-find")
+    (version "0.2")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/union-find/union-find-"
+                    version ".tar.gz"))
+              (sha256
+               (base32
+                "1v7hj42j9w6jlzi56jg8rh4p58gfs1c5dx30wd1qqvn0p0mnihp6"))))
+    (build-system haskell-build-system)
+    (home-page "https://github.com/nominolo/union-find")
+    (synopsis "Efficient union and equivalence testing of sets")
+    (description
+     "The Union/Find algorithm implements these operations in (effectively)
+constant-time:
+@enumerate
+@item Check whether two elements are in the same equivalence class.
+@item Create a union of two equivalence classes.
+@item Look up the descriptor of the equivalence class.
+@end enumerate\n")
+    (license license:bsd-3)))
+
+(define-public ghc-uniplate
+  (package
+    (name "ghc-uniplate")
+    (version "1.6.12")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/uniplate/uniplate-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1dx8f9aw27fz8kw0ad1nm6355w5rdl7bjvb427v2bsgnng30pipw"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-syb" ,ghc-syb)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)))
+    (home-page "http://community.haskell.org/~ndm/uniplate/")
+    (synopsis "Simple, concise and fast generic operations")
+    (description "Uniplate is a library for writing simple and concise generic
+operations.  Uniplate has similar goals to the original Scrap Your Boilerplate
+work, but is substantially simpler and faster.")
+    (license license:bsd-3)))
+
+(define-public ghc-unix-compat
+  (package
+    (name "ghc-unix-compat")
+    (version "0.5.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/unix-compat/unix-compat-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0llwl7rp63fy2ychwdclz1afj45pbin5pfl01dvn6rwhvmwhr7d3"))))
+    (build-system haskell-build-system)
+    (home-page
+     "https://github.com/jystic/unix-compat")
+    (synopsis "Portable POSIX-compatibility layer")
+    (description
+     "This package provides portable implementations of parts of the unix
+package.  This package re-exports the unix package when available.  When it
+isn't available, portable implementations are used.")
+    (license license:bsd-3)))
+
+(define-public ghc-unix-time
+  (package
+    (name "ghc-unix-time")
+    (version "0.3.8")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/unix-time/unix-time-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "051slgpid5cxiaw203ky0ql3823h28fcjs08axkzd4265wrvv8fw"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:tests? #f)) ; FIXME: Test fails with "System.Time not found".  This
+                     ; is weird, that should be provided by GHC 7.10.2.
+    (inputs
+     `(("ghc-old-time" ,ghc-old-time)
+       ("ghc-old-locale" ,ghc-old-locale)))
+    (home-page "https://hackage.haskell.org/package/unix-time")
+    (synopsis "Unix time parser/formatter and utilities")
+    (description "This library provides fast parsing and formatting utilities
+for Unix time in Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-unliftio
+  (package
+    (name "ghc-unliftio")
+    (version "0.2.7.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/unliftio/unliftio-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0qql93lq5w7qghl454cc3s1i8v1jb4h08n82fqkw0kli4g3g9njs"))))
+    (build-system haskell-build-system)
+    (arguments `(#:tests? #f)) ; FIXME: hspec-discover not in PATH
+    (inputs
+     `(("ghc-async" ,ghc-async)
+       ("ghc-unliftio-core" ,ghc-unliftio-core)))
+    (native-inputs `(("ghc-hspec" ,ghc-hspec)))
+    (home-page "https://github.com/fpco/unliftio")
+    (synopsis "Provides MonadUnliftIO typecplass for unlifting monads to
+IO (batteries included)")
+    (description "This Haskell package provides the core @code{MonadUnliftIO}
+typeclass, a number of common instances, and a collection of common functions
+working with it.")
+    (license license:expat)))
+
+(define-public ghc-unliftio-core
+  (package
+    (name "ghc-unliftio-core")
+    (version "0.1.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "unliftio-core-" version "/"
+                           "unliftio-core-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1193fplsjm1lcr05xwvkj1rsyzx74i755f6kw3ikmxbsv0bv0l3m"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("1" "16bjwcsaghqqmyi69rq65dn3ydifyfaabq3ns37apdm00mwqbcj2")))
+    (home-page
+     "https://github.com/fpco/unliftio/tree/master/unliftio-core#readme")
+    (synopsis "The MonadUnliftIO typeclass for unlifting monads to IO")
+    (description "This Haskell package provides the core @code{MonadUnliftIO}
+typeclass, instances for base and transformers, and basic utility
+functions.")
+    (license license:expat)))
+
+(define-public ghc-unordered-containers
+  (package
+    (name "ghc-unordered-containers")
+    (version "0.2.9.0")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/unordered-containers"
+             "/unordered-containers-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0l4264p0av12cc6i8gls13q8y27x12z2ar4x34n3x59y99fcnc37"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-chasingbottoms" ,ghc-chasingbottoms)
+       ("ghc-hunit" ,ghc-hunit)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-test-framework" ,ghc-test-framework)
+       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
+       ("ghc-hashable" ,ghc-hashable)))
+    (home-page
+     "https://github.com/tibbe/unordered-containers")
+    (synopsis
+     "Efficient hashing-based container types")
+    (description
+     "Efficient hashing-based container types.  The containers have been
+optimized for performance critical use, both in terms of large data quantities
+and high speed.")
+    (license license:bsd-3)))
+
+(define-public ghc-unordered-containers-bootstrap
+  (package
+    (inherit ghc-unordered-containers)
+    (name "ghc-unordered-containers-bootstrap")
+    (arguments `(#:tests? #f))
+    (inputs
+     `(("ghc-hashable" ,ghc-hashable-bootstrap)))
+    (properties '(hidden? #t))))
+
+(define-public ghc-unsafe
+  (package
+    (name "ghc-unsafe")
+    (version "0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/unsafe/unsafe-"
+         version ".tar.gz"))
+       (sha256
+        (base32
+         "0hc6xr1i3hkz25gdgfx1jqgpsc9mwa05bkfynp0mcfdlyz6782nz"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/unsafe")
+    (synopsis "Unified interface to unsafe functions")
+    (description "Safe Haskell introduced the notion of safe and unsafe
+modules.  In order to make as many as possible modules ``safe'', the
+well-known unsafe functions were moved to distinguished modules.  This
+makes it hard to write packages that work with both old and new versions
+of GHC.  This package provides a single module System.Unsafe that
+exports the unsafe functions from the base package.  It provides them in
+a style ready for qualification, that is, you should import them by
+@code{import qualified System.Unsafe as Unsafe}.")
+    (license license:bsd-3)))
+
+(define-public ghc-uri-bytestring
+  (package
+    (name "ghc-uri-bytestring")
+    (version "0.3.2.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "uri-bytestring-" version "/"
+                           "uri-bytestring-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1q04j5ybvk37zk2m0bkjwyhblz0ymdj0cn4rvsvdca1ikn5xdv5c"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-attoparsec" ,ghc-attoparsec)
+              ("ghc-fail" ,ghc-fail)
+              ("ghc-blaze-builder" ,ghc-blaze-builder)
+              ("ghc-th-lift-instances" ,ghc-th-lift-instances)))
+    (native-inputs `(("ghc-attoparsec" ,ghc-attoparsec)
+                     ("ghc-hunit" ,ghc-hunit)
+                     ("ghc-quickcheck" ,ghc-quickcheck)
+                     ("ghc-tasty" ,ghc-tasty)
+                     ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+                     ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+                     ("ghc-base-compat" ,ghc-base-compat)
+                     ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)
+                     ("ghc-semigroups" ,ghc-semigroups)
+                     ("ghc-generics-sop" ,ghc-generics-sop)))
+    (home-page "https://github.com/Soostone/uri-bytestring")
+    (synopsis "Haskell URI parsing as ByteStrings")
+    (description "This Haskell package aims to be an RFC3986 compliant URI
+parser that uses ByteStrings for parsing and representing the URI data.")
+    (license license:bsd-3)))
+
+(define-public ghc-utf8-string
+  (package
+    (name "ghc-utf8-string")
+    (version "1.0.1.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/utf8-string/utf8-string-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32 "0h7imvxkahiy8pzr8cpsimifdfvv18lizrb33k6mnq70rcx9w2zv"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("3" "02vhj5gykkqa2dyn7s6gn8is1b5fdn9xcqqvlls268g7cpv6rk38")))
+    (home-page "https://github.com/glguy/utf8-string/")
+    (synopsis "Support for reading and writing UTF8 Strings")
+    (description
+     "A UTF8 layer for Strings.  The utf8-string package provides operations
+for encoding UTF8 strings to Word8 lists and back, and for reading and writing
+UTF8 without truncation.")
+    (license license:bsd-3)))
+
+(define-public ghc-utility-ht
+  (package
+    (name "ghc-utility-ht")
+    (version "0.0.14")
+    (home-page "https://hackage.haskell.org/package/utility-ht")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append home-page "/utility-ht-" version ".tar.gz"))
+       (sha256
+        (base32 "1a7bgk7wv7sqbxbiv7kankiimr3wij7zdm7s83zwsf886ghyxhk9"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-quickcheck" ,ghc-quickcheck)))
+    (synopsis "Haskell helper functions for Lists, Maybes, Tuples, Functions")
+    (description "This package includes Hakell modules providing various
+helper functions for Lists, Maybes, Tuples, Functions.")
+    (license license:bsd-3)))
+
+(define-public ghc-uuid
+  (package
+    (name "ghc-uuid")
+    (version "1.3.13")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "uuid-" version "/"
+                           "uuid-" version ".tar.gz"))
+       (sha256
+        (base32
+         "09xhk42yhxvqmka0iqrv3338asncz8cap3j0ic0ps896f2581b6z"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("2" "0m185q62jkfb5jsv358nxbnrkv8y8hd0qqvgvh22wvc5g9ipz0r9")
+       #:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'strip-test-framework-constraints
+           (lambda _
+             (substitute* "uuid.cabal"
+               (("HUnit            >= 1\\.2   && < 1\\.4") "HUnit")
+               (("QuickCheck       >= 2\\.4   && < 2\\.10") "QuickCheck")
+               (("tasty            >= 0\\.10  && < 0\\.12") "tasty")
+               (("tasty-hunit      == 0\\.9\\.\\*") "tasty-hunit")
+               (("tasty-quickcheck == 0\\.8\\.\\*") "tasty-quickcheck")))))))
+    (inputs `(("ghc-cryptohash-sha1" ,ghc-cryptohash-sha1)
+              ("ghc-cryptohash-md5" ,ghc-cryptohash-md5)
+              ("ghc-entropy" ,ghc-entropy)
+              ("ghc-network-info" ,ghc-network-info)
+              ("ghc-random" ,ghc-random)
+              ("ghc-uuid-types" ,ghc-uuid-types)))
+    (native-inputs `(("ghc-hunit" ,ghc-hunit)
+                     ("ghc-quickcheck" ,ghc-quickcheck)
+                     ("ghc-tasty" ,ghc-tasty)
+                     ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+                     ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (home-page "https://github.com/hvr/uuid")
+    (synopsis "Haskell library to create, compare, parse, and print UUIDs")
+    (description "This Haskell library provides utilities creating, comparing,
+parsing and printing @dfn{Universally Unique Identifiers} or UUIDs.")
+    (license license:bsd-3)))
+
+(define-public ghc-uuid-types
+  (package
+    (name "ghc-uuid-types")
+    (version "1.0.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "uuid-types-" version "/"
+                           "uuid-types-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1zdka5jnm1h6k36w3nr647yf3b5lqb336g3fkprhd6san9x52xlj"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'strip-test-framework-constraints
+           (lambda _
+             (substitute* "uuid-types.cabal"
+               (("HUnit >=1\\.2 && < 1\\.4") "HUnit")
+               (("QuickCheck >=2\\.4 && < 2\\.9") "QuickCheck")
+               (("tasty >= 0\\.10 && < 0\\.12") "tasty")
+               (("tasty-hunit == 0\\.9\\.\\*") "tasty-hunit")
+               (("tasty-quickcheck == 0\\.8\\.\\*") "tasty-quickcheck")))))))
+    (inputs `(("ghc-hashable" ,ghc-hashable)
+              ("ghc-random" ,ghc-random)))
+    (native-inputs `(("ghc-hunit" ,ghc-hunit)
+                     ("ghc-quickcheck" ,ghc-quickcheck)
+                     ("ghc-tasty" ,ghc-tasty)
+                     ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+                     ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (home-page "https://github.com/hvr/uuid")
+    (synopsis "Haskell type definitions for UUIDs")
+    (description "This Haskell library contains type definitions for
+@dfn{Universally Unique Identifiers} or
+@uref{https://en.wikipedia.org/wiki/UUID, UUIDs}, and basic conversion
+functions.")
+    (license license:bsd-3)))
+
+(define-public ghc-validation
+  (package
+    (name "ghc-validation")
+    (version "1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/validation/validation-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "08drmdvyzg2frbb26icy1mlz52xv0l6gi3v8gb7xp0vrcci5libh"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("1" "1x1g4nannz81j1h64l1m3ancc96zc57d1bjhj1wk7bwn1xxbi5h3")))
+    (inputs
+     `(("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-semigroupoids" ,ghc-semigroupoids)
+       ("ghc-bifunctors" ,ghc-bifunctors)
+       ("ghc-lens" ,ghc-lens)))
+    (native-inputs
+     `(("ghc-hedgehog" ,ghc-hedgehog)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://github.com/qfpl/validation")
+    (synopsis
+     "Data-type like Either but with an accumulating Applicative")
+    (description
+     "A data-type like Either but with differing properties and type-class
+instances.
+
+Library support is provided for this different representation, including
+@code{lens}-related functions for converting between each and abstracting over
+their similarities.
+
+The @code{Validation} data type is isomorphic to @code{Either}, but has an
+instance of @code{Applicative} that accumulates on the error side.  That is to
+say, if two (or more) errors are encountered, they are appended using a
+@{Semigroup} operation.
+
+As a consequence of this @code{Applicative} instance, there is no
+corresponding @code{Bind} or @code{Monad} instance.  @code{Validation} is an
+example of, \"An applicative functor that is not a monad.\"")
+    (license license:bsd-3)))
+
+(define-public ghc-validity
+  (package
+    (name "ghc-validity")
+    (version "0.7.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/validity/validity-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0xribw98amafihw87ddajk6vlirp7w9b26lrnjgq7jfm4710j95f"))))
+    (build-system haskell-build-system)
+    (native-inputs `(("ghc-hspec" ,ghc-hspec)
+                     ("hspec-discover" ,hspec-discover)))
+    (home-page
+     "https://github.com/NorfairKing/validity")
+    (synopsis "Validity typeclass")
+    (description
+     "Values of custom types usually have invariants imposed upon them.  This
+package provides the @code{Validity} type class, which makes these invariants
+explicit by providing a function to check whether the invariants hold.")
+    (license license:expat)))
+
+(define-public ghc-vault
+  (package
+    (name "ghc-vault")
+    (version "0.3.1.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/vault/vault-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "072mbrihsdsb8c6xvg6lvk0rqjgvxvi8qkg4n6wwym5hq0pfa04y"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-hashable" ,ghc-hashable)
+       ("ghc-semigroupoids" ,ghc-semigroupoids)))
+    (home-page
+     "https://github.com/HeinrichApfelmus/vault")
+    (synopsis "Persistent store for arbitrary values")
+    (description "This package provides vaults for Haskell.  A vault is a
+persistent store for values of arbitrary types.  It's like having first-class
+access to the storage space behind @code{IORefs}.  The data structure is
+analogous to a bank vault, where you can access different bank boxes with
+different keys; hence the name.  Also provided is a @code{locker} type,
+representing a store for a single element.")
+    (license license:bsd-3)))
+
+(define-public ghc-vector
+  (package
+    (name "ghc-vector")
+    (version "0.12.0.1")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/vector/vector-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0yrx2ypiaxahvaz84af5bi855hd3107kxkbqc8km29nsp5wyw05i"))))
+    (build-system haskell-build-system)
+    ;; FIXME: To simplify upgrading all Haskell packages, we leave the tests
+    ;; disabled for now.
+    (arguments
+     `(#:cabal-revision
+       ("3" "0y5rh8k710i2a3p1h2rghvr5cfg78p5h0kbfi7ifxqqf6pzlyr1x")
+       #:tests? #f))
+    (inputs
+     `(("ghc-primitive" ,ghc-primitive)
+       ("ghc-random" ,ghc-random)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ;; ("ghc-hunit" ,ghc-hunit)
+       ;; ("ghc-test-framework" ,ghc-test-framework)
+       ;; ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
+       ;; ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
+       ))
+    (home-page "https://github.com/haskell/vector")
+    (synopsis "Efficient Arrays")
+    (description "This library provides an efficient implementation of
+Int-indexed arrays (both mutable and immutable), with a powerful loop
+optimisation framework.")
+    (license license:bsd-3)))
+
+(define-public ghc-vector-algorithms
+  (package
+    (name "ghc-vector-algorithms")
+    (version "0.7.0.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "vector-algorithms-" version "/"
+                           "vector-algorithms-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0mfa8ig9v69l41p2vb5jl4qmaln5y1rlzarr2mlgm8g1nvq8qqdg"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-vector" ,ghc-vector)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)))
+    (home-page "https://github.com/bos/math-functions")
+    (synopsis "Algorithms for vector arrays in Haskell")
+    (description "This Haskell library algorithms for vector arrays.")
+    (license license:bsd-3)))
+
+(define-public ghc-vector-binary-instances
+  (package
+    (name "ghc-vector-binary-instances")
+    (version "0.2.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/"
+             "vector-binary-instances/vector-binary-instances-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1y236jb72iab9ska1mc48z6yb0xgwmj45laaqdyjxksd84z7hbrb"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:cabal-revision
+       ("1" "196frl4akhfk7xf1nxzn8lmq99dxhzhsimanswn9yy7ym8zhki4i")))
+    (inputs
+     `(("ghc-vector" ,ghc-vector)))
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (home-page "https://github.com/bos/vector-binary-instances")
+    (synopsis "Instances of Data.Binary and Data.Serialize for vector")
+    (description "This library provides instances of @code{Binary} for the
+types defined in the @code{vector} package, making it easy to serialize
+vectors to and from disk.  We use the generic interface to vectors, so all
+vector types are supported.  Specific instances are provided for unboxed,
+boxed and storable vectors.")
+    (license license:bsd-3)))
+
+(define-public ghc-vector-builder
+  (package
+    (name "ghc-vector-builder")
+    (version "0.3.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "vector-builder-" version "/"
+                           "vector-builder-" version ".tar.gz"))
+       (sha256
+        (base32
+         "06d2pa1fb3ydrl7l6rjazqyxv5i73v65x2f5fp0ypjxfbm6jsmn8"))))
+    (build-system haskell-build-system)
+    (inputs `(("ghc-vector" ,ghc-vector)
+              ("ghc-semigroups" ,ghc-semigroups)
+              ("ghc-base-prelude" ,ghc-base-prelude)))
+    (native-inputs `(("ghc-attoparsec" ,ghc-attoparsec)
+                     ("ghc-tasty" ,ghc-tasty)
+                     ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+                     ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
+                     ("ghc-hunit" ,ghc-hunit)
+                     ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)
+                     ("ghc-rerebase" ,ghc-rerebase)))
+    (home-page "https://github.com/nikita-volkov/vector-builder")
+    (synopsis "Vector builder for Haskell")
+    (description "This Haskell package provides an API for constructing vectors.
+It provides the composable @code{Builder} abstraction, which has instances of the
+@code{Monoid} and @code{Semigroup} classes.
+
+You would first use the @code{Builder} abstraction to specify the structure of
+the vector; then you can execute the builder to actually produce the
+vector. ")
+    (license license:expat)))
+
+(define-public ghc-vector-th-unbox
+  (package
+    (name "ghc-vector-th-unbox")
+    (version "0.2.1.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/"
+                           "vector-th-unbox-" version "/"
+                           "vector-th-unbox-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0d82x55f5vvr1jvaia382m23rs690lg55pvavv8f4ph0y6kd91xy"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-vector" ,ghc-vector)
+       ("ghc-data-default" ,ghc-data-default)))
+    (home-page "https://github.com/liyang/vector-th-unbox")
+    (synopsis "Deriver for Data.Vector.Unboxed using Template Haskell")
+    (description "This Haskell library provides a Template Haskell
+deriver for unboxed vectors, given a pair of coercion functions to
+and from some existing type with an Unbox instance.")
+    (license license:bsd-3)))
+
+(define-public ghc-void
+  (package
+    (name "ghc-void")
+    (version "0.7.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/void/void-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0aygw0yb1h3yhmfl3bkwh5d3h0l4mmsxz7j53vdm6jryl1kgxzyk"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-hashable" ,ghc-hashable)))
+    (home-page "https://github.com/ekmett/void")
+    (synopsis
+     "Logically uninhabited data type")
+    (description
+     "A Haskell 98 logically uninhabited data type, used to indicate that a
+given term should not exist.")
+    (license license:bsd-3)))
+
+(define-public ghc-wave
+  (package
+    (name "ghc-wave")
+    (version "0.1.5")
+    (source (origin
+      (method url-fetch)
+      (uri (string-append
+             "https://hackage.haskell.org/package/wave/wave-"
+             version
+             ".tar.gz"))
+      (sha256
+        (base32
+          "03zycmwrchhqvi37fdvlzz2d1vl4hy0i8xyys1zznw38qfq0h2i5"))))
+    (build-system haskell-build-system)
+    (arguments
+     '(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'update-constraints
+           (lambda _
+             (substitute* "wave.cabal"
+               (("temporary.* < 1\\.3")
+                "temporary >= 1.1 && < 1.4")))))))
+    (inputs
+     `(("ghc-cereal" ,ghc-cereal)
+       ("ghc-data-default-class"
+        ,ghc-data-default-class)
+       ("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-temporary" ,ghc-temporary)))
+    (native-inputs
+     `(("hspec-discover" ,hspec-discover)
+       ("ghc-hspec" ,ghc-hspec)))
+    (home-page "https://github.com/mrkkrp/wave")
+    (synopsis "Work with WAVE and RF64 files in Haskell")
+    (description "This package allows you to work with WAVE and RF64
+files in Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-wcwidth
+  (package
+    (name "ghc-wcwidth")
+    (version "0.0.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/wcwidth/wcwidth-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1n1fq7v64b59ajf5g50iqj9sa34wm7s2j3viay0kxpmvlcv8gipz"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-setlocale" ,ghc-setlocale)
+       ("ghc-utf8-string" ,ghc-utf8-string)
+       ("ghc-attoparsec" ,ghc-attoparsec)))
+    (home-page "https://github.com/solidsnack/wcwidth/")
+    (synopsis "Haskell bindings to wcwidth")
+    (description "This package provides Haskell bindings to your system's
+native wcwidth and a command line tool to examine the widths assigned by it.
+The command line tool can compile a width table to Haskell code that assigns
+widths to the Char type.")
+    (license license:bsd-3)))
+
+(define-public ghc-wcwidth-bootstrap
+  (package
+    (inherit ghc-wcwidth)
+    (name "ghc-wcwidth-bootstrap")
+    (inputs
+     `(("ghc-setlocale" ,ghc-setlocale)
+       ("ghc-utf8-string" ,ghc-utf8-string)
+       ("ghc-attoparsec" ,ghc-attoparsec-bootstrap)))
+    (properties '(hidden? #t))))
+
+(define-public ghc-weigh
+  (package
+    (name "ghc-weigh")
+    (version "0.0.12")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/weigh/"
+                           "weigh-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0zw2a997gxgdzqmd7j730kxgynzmjvvlkw84dajmfzf1v9pbij7x"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-split" ,ghc-split)
+       ("ghc-temporary" ,ghc-temporary)))
+    (home-page "https://github.com/fpco/weigh#readme")
+    (synopsis "Measure allocations of a Haskell functions/values")
+    (description "This package provides tools to measure the memory usage of a
+Haskell value or function.")
+    (license license:bsd-3)))
+
+(define-public ghc-wl-pprint
+  (package
+    (name "ghc-wl-pprint")
+    (version "1.2.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://hackage.haskell.org/package/wl-pprint/wl-pprint-"
+                    version ".tar.gz"))
+              (sha256
+               (base32
+                "0kn7y8pdrv8f87zhd5mifcl8fy3b2zvnzmzwhdqhxxlyzwiq6z0c"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/wl-pprint")
+    (synopsis "Wadler/Leijen pretty printer")
+    (description
+     "This is a pretty printing library based on Wadler's paper @i{A Prettier
+Printer}.  This version allows the library user to declare overlapping
+instances of the @code{Pretty} class.")
+    (license license:bsd-3)))
+
+(define-public ghc-wl-pprint-annotated
+  (package
+    (name "ghc-wl-pprint-annotated")
+    (version "0.1.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "mirror://hackage/package/wl-pprint-annotated/wl-pprint-annotated-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1br7qyf27iza213inwhf9bm2k6in0zbmfw6w4clqlc9f9cj2nrkb"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
+    (home-page
+     "https://github.com/minad/wl-pprint-annotated#readme")
+    (synopsis
+     "Wadler/Leijen pretty printer with annotation support")
+    (description
+     "Annotations are useful for coloring.  This is a limited version of
+@code{wl-pprint-extras} without support for point effects and without the free
+monad.  Like in @code{annotated-wl-pprint}, only annotations are supported.
+Compared to @code{annotated-wl-pprint} this library provides a slightly
+modernized interface.")
+    (license license:bsd-3)))
+
+(define-public ghc-wl-pprint-text
+  (package
+    (name "ghc-wl-pprint-text")
+    (version "1.2.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/wl-pprint-text/wl-pprint-text-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "0g3w92rad6x5appfb22rbzcas2ix2h0hy91sdxhq8a4a5cnlrpa0"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-base-compat" ,ghc-base-compat)))
+    (home-page "https://hackage.haskell.org/package/wl-pprint-text")
+    (synopsis "Wadler/Leijen Pretty Printer for Text values")
+    (description
+     "A clone of wl-pprint for use with the text library.")
+    (license license:bsd-3)))
+
+(define-public ghc-word8
+  (package
+    (name "ghc-word8")
+    (version "0.1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/word8/word8-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "12jx7f13d2h1djq4fh4dyrab61sm49mj1w61j3rzp2vjfm696c16"))))
+    (build-system haskell-build-system)
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("hspec-discover" ,hspec-discover)))
+    (home-page "https://hackage.haskell.org/package/word8")
+    (synopsis "Word8 library for Haskell")
+    (description "Word8 library to be used with @code{Data.ByteString}.")
+    (license license:bsd-3)))
+
+(define-public ghc-x11
+  (package
+    (name "ghc-x11")
+    (version "1.9")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/X11/"
+                           "X11-" version ".tar.gz"))
+       (sha256
+        (base32 "1f8dy6ckkyvpcv7zlniyv01cqjb9lgqscm8pml58cvwc7n38w4qh"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("libx11" ,libx11)
+       ("libxrandr" ,libxrandr)
+       ("libxinerama" ,libxinerama)
+       ("libxscrnsaver" ,libxscrnsaver)
+       ("ghc-data-default" ,ghc-data-default)))
+    (home-page "https://github.com/haskell-pkg-janitors/X11")
+    (synopsis "Bindings to the X11 graphics library")
+    (description
+     "This package provides Haskell bindings to the X11 graphics library.  The
+bindings are a direct translation of the C bindings.")
+    (license license:bsd-3)))
+
+(define-public ghc-x11-xft
+  (package
+    (name "ghc-x11-xft")
+    (version "0.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/X11-xft/"
+                           "X11-xft-" version ".tar.gz"))
+       (sha256
+        (base32 "1lgqb0s2qfwwgbvwxhjbi23rbwamzdi0l0slfr20c3jpcbp3zfjf"))))
+    (inputs
+     `(("ghc-x11" ,ghc-x11)
+       ("ghc-utf8-string" ,ghc-utf8-string)
+       ("libx11" ,libx11)
+       ("libxft" ,libxft)
+       ("xorgproto" ,xorgproto)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/X11-xft")
+    (synopsis "Bindings to Xft")
+    (description
+     "Bindings to the Xft, X Free Type interface library, and some Xrender
+parts.")
+    (license license:lgpl2.1)))
+
+(define-public ghc-xdg-basedir
+  (package
+    (name "ghc-xdg-basedir")
+    (version "0.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/xdg-basedir/"
+             "xdg-basedir-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0azlzaxp2dn4l1nr7shsxah2magk1szf6fx0mv75az00qsjw6qg4"))))
+    (build-system haskell-build-system)
+    (home-page "http://github.com/willdonnelly/xdg-basedir")
+    (synopsis "XDG Base Directory library for Haskell")
+    (description "This package provides a library implementing the XDG Base Directory spec.")
+    (license license:bsd-3)))
+
+(define-public ghc-xml
+  (package
+    (name "ghc-xml")
+    (version "1.3.14")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/xml/xml-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0g814lj7vaxvib2g3r734221k80k7ap9czv9hinifn8syals3l9j"))))
+    (build-system haskell-build-system)
+    (home-page "http://code.galois.com")
+    (synopsis "Simple XML library for Haskell")
+    (description "This package provides a simple XML library for Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-xml-conduit
+  (package
+    (name "ghc-xml-conduit")
+    (version "1.8.0.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/xml-conduit/"
+                           "xml-conduit-" version ".tar.gz"))
+       (sha256
+        (base32
+         "177gmyigxql1pn3ncz0r8annwv5cbxnihbgrrg1dhm4gmc9jy2wq"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-conduit" ,ghc-conduit)
+       ("ghc-conduit-extra" ,ghc-conduit-extra)
+       ("ghc-doctest" ,ghc-doctest)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-xml-types" ,ghc-xml-types)
+       ("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-data-default-class" ,ghc-data-default-class)
+       ("ghc-blaze-markup" ,ghc-blaze-markup)
+       ("ghc-blaze-html" ,ghc-blaze-html)
+       ("ghc-monad-control" ,ghc-monad-control)
+       ("ghc-hspec" ,ghc-hspec)
+       ("ghc-hunit" ,ghc-hunit)))
+    (home-page "https://github.com/snoyberg/xml")
+    (synopsis "Utilities for dealing with XML with the conduit package")
+    (description
+     "This package provides pure-Haskell utilities for dealing with XML with
+the @code{conduit} package.")
+    (license license:expat)))
+
+(define-public ghc-xml-types
+  (package
+    (name "ghc-xml-types")
+    (version "0.3.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://hackage.haskell.org/package/xml-types/"
+                           "xml-types-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1jgqxsa9p2q3h6nymbfmvhldqrqlwrhrzmwadlyc0li50x0d8dwr"))))
+    (build-system haskell-build-system)
+    (home-page "https://john-millikin.com/software/haskell-xml/")
+    (synopsis "Basic types for representing XML")
+    (description "This package provides basic types for representing XML
+documents.")
+    (license license:expat)))
+
+(define-public ghc-yaml
+  (package
+    (name "ghc-yaml")
+    (version "0.8.32")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://hackage.haskell.org/package/"
+                                  "yaml/yaml-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0cbsyh4ilvjzq1q7pxls43k6pdqxg1l85xzibcwpbvmlvrizh86w"))))
+    (build-system haskell-build-system)
+    ;; The tests are broken on i686.  They are fixed in 0.10.3.0.
+    ;; See https://github.com/snoyberg/yaml/issues/158
+    (arguments `(#:tests? #f))
+    (inputs
+     `(("ghc-conduit" ,ghc-conduit)
+       ("ghc-resourcet" ,ghc-resourcet)
+       ("ghc-aeson" ,ghc-aeson)
+       ("ghc-unordered-containers" ,ghc-unordered-containers)
+       ("ghc-vector" ,ghc-vector)
+       ("ghc-attoparsec" ,ghc-attoparsec)
+       ("ghc-scientific" ,ghc-scientific)
+       ("ghc-semigroups" ,ghc-semigroups)
+       ("ghc-temporary" ,ghc-temporary)
+       ("ghc-enclosed-exceptions" ,ghc-enclosed-exceptions)
+       ("ghc-base-compat" ,ghc-base-compat)))
+    (native-inputs
+     `(("ghc-hspec" ,ghc-hspec)
+       ("ghc-hunit" ,ghc-hunit)
+       ("hspec-discover" ,hspec-discover)
+       ("ghc-mockery" ,ghc-mockery)))
+    (home-page "https://github.com/snoyberg/yaml/")
+    (synopsis "Parsing and rendering YAML documents")
+    (description
+     "This package provides a library to parse and render YAML documents.")
+    (license license:bsd-3)))
+
+(define-public ghc-zip-archive
+  (package
+    (name "ghc-zip-archive")
+    (version "0.3.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/zip-archive/zip-archive-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "0kf8xyac168bng8a0za2jwrbss7a4ralvci9g54hnvl0gkkxx2lq"))))
+    (build-system haskell-build-system)
+    (inputs
+     `(("ghc-digest" ,ghc-digest)
+       ("ghc-temporary" ,ghc-temporary)
+       ("ghc-zlib" ,ghc-zlib)))
+    (native-inputs
+     `(("ghc-hunit" ,ghc-hunit)
+       ("unzip" ,unzip)))
+    (home-page "https://hackage.haskell.org/package/zip-archive")
+    (synopsis "Zip archive library for Haskell")
+    (description "The zip-archive library provides functions for creating,
+modifying, and extracting files from zip archives in Haskell.")
+    (license license:bsd-3)))
+
+(define-public ghc-zlib
+  (package
+    (name "ghc-zlib")
+    (version "0.6.2")
+    (outputs '("out" "doc"))
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://hackage.haskell.org/package/zlib/zlib-"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "1vbzf0awb6zb456xf48za1kl22018646cfzq4frvxgb9ay97vk0d"))))
+    (build-system haskell-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'strip-test-framework-constraints
+           (lambda _
+             (substitute* "zlib.cabal"
+               (("tasty            >= 0\\.8 && < 0\\.12") "tasty")
+               (("tasty-hunit      >= 0\\.8 && < 0\\.10") "tasty-hunit")
+               (("tasty-quickcheck == 0\\.8\\.\\*") "tasty-quickcheck")))))))
+    (inputs `(("zlib" ,zlib)))
+    (native-inputs
+     `(("ghc-quickcheck" ,ghc-quickcheck)
+       ("ghc-tasty" ,ghc-tasty)
+       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
+       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
+    (home-page "https://hackage.haskell.org/package/zlib")
+    (synopsis
+     "Compression and decompression in the gzip and zlib formats")
+    (description
+     "This package provides a pure interface for compressing and decompressing
+streams of data represented as lazy @code{ByteString}s.  It uses the zlib C
+library so it has high performance.  It supports the @code{zlib}, @code{gzip}
+and @code{raw} compression formats.  It provides a convenient high level API
+suitable for most tasks and for the few cases where more control is needed it
+provides access to the full zlib feature set.")
+    (license license:bsd-3)))
+
 (define-public ghc-zlib-bindings
   (package
     (name "ghc-zlib-bindings")
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index b544190895..4d16cd656f 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -39,43 +39,23 @@
   #:use-module (gnu packages)
   #:use-module (gnu packages base)
   #:use-module (gnu packages bootstrap)
-  #:use-module (gnu packages check)
-  #:use-module (gnu packages compression)
   #:use-module (gnu packages elf)
-  #:use-module (gnu packages emacs)
   #:use-module (gnu packages gcc)
   #:use-module (gnu packages ghostscript)
-  #:use-module (gnu packages gl)
-  #:use-module (gnu packages graphviz)
-  #:use-module (gnu packages gtk)
-  #:use-module (gnu packages haskell-check)
-  #:use-module (gnu packages haskell-crypto)
-  #:use-module (gnu packages haskell-web)
   #:use-module (gnu packages libffi)
-  #:use-module (gnu packages linux)
   #:use-module (gnu packages lisp)
-  #:use-module (gnu packages lua)
-  #:use-module (gnu packages maths)
   #:use-module (gnu packages multiprecision)
   #:use-module (gnu packages ncurses)
-  #:use-module (gnu packages pcre)
   #:use-module (gnu packages perl)
-  #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages python)
-  #:use-module (gnu packages sdl)
-  #:use-module (gnu packages tls)
-  #:use-module (gnu packages xml)
-  #:use-module (gnu packages xorg)
   #:use-module (guix build-system gnu)
-  #:use-module (guix build-system haskell)
   #:use-module (guix download)
   #:use-module (guix git-download)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix packages)
   #:use-module (guix utils)
   #:use-module (ice-9 match)
-  #:use-module (ice-9 regex)
-  #:use-module ((srfi srfi-1) #:select (alist-delete)))
+  #:use-module (ice-9 regex))
 
 (define-public cl-yale-haskell
   (let ((commit "85f94c72a16c5f70301dd8db04cde9de2d7dd270")
@@ -622,11274 +602,4 @@ interactive environment for the functional language Haskell.")
 
 (define-public ghc ghc-8)
 
-(define-public ghc-hostname
-  (package
-    (name "ghc-hostname")
-    (version "1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/hostname/"
-                           "hostname-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0p6gm4328946qxc295zb6vhwhf07l1fma82vd0siylnsnsqxlhwv"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/hostname")
-    (synopsis "Hostname in Haskell")
-    (description "Network.HostName is a simple package providing a means to
-determine the hostname.")
-    (license license:bsd-3)))
-
-(define-public ghc-convertible
-  (package
-    (name "ghc-convertible")
-    (version "1.1.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/convertible/"
-                           "convertible-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0v18ap1mccnndgxmbfgyjdicg8jlss01bd5fq8a576dr0h4sgyg9"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-old-time" ,ghc-old-time)
-       ("ghc-old-locale" ,ghc-old-locale)))
-    (home-page "https://hackage.haskell.org/package/convertible")
-    (synopsis "Typeclasses and instances for converting between types")
-    (description
-     "This package provides a typeclass with a single function that is
-designed to help convert between different types: numeric values, dates and
-times, and the like.  The conversions perform bounds checking and return a
-pure @code{Either} value.  This means that you need not remember which specific
-function performs the conversion you desire.")
-    (license license:bsd-3)))
-
-(define-public ghc-double-conversion
-  (package
-    (name "ghc-double-conversion")
-    (version "2.0.2.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "double-conversion/double-conversion-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0sx2kc1gw72mjvd8vph8bbjw5whfxfv92rsdhjg1c0al75rf3ka4"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://github.com/bos/double-conversion")
-    (synopsis "Fast conversion between double precision floating point and text")
-    (description
-     "This package provides a library that performs fast, accurate conversion
-between double precision floating point and text.")
-    (license license:bsd-3)))
-
-(define-public ghc-libxml
-  (package
-    (name "ghc-libxml")
-    (version "0.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/libxml/"
-                           "libxml-" version ".tar.gz"))
-       (sha256
-        (base32
-         "01zvk86kg726lf2vnlr7dxiz7g3xwi5a4ak9gcfbwyhynkzjmsfi"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("libxml2" ,libxml2)))
-    (arguments
-     `(#:configure-flags
-       `(,(string-append "--extra-include-dirs="
-                         (assoc-ref %build-inputs "libxml2")
-                         "/include/libxml2"))))
-    (home-page "https://hackage.haskell.org/package/libxml")
-    (synopsis "Haskell bindings to libxml2")
-    (description
-     "This library provides minimal Haskell binding to libxml2.")
-    (license license:bsd-3)))
-
-(define-public ghc-prelude-extras
-  (package
-    (name "ghc-prelude-extras")
-    (version "0.4.0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/prelude-extras/prelude-extras-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0xzqdf3nl2h0ra4gnslm1m1nsxlsgc0hh6ky3vn578vh11zhifq9"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/ekmett/prelude-extras")
-    (synopsis "Higher order versions of Prelude classes")
-    (description "This library provides higher order versions of
-@code{Prelude} classes to ease programming with polymorphic recursion and
-reduce @code{UndecidableInstances}.")
-    (license license:bsd-3)))
-
-(define-public ghc-data-default
-  (package
-    (name "ghc-data-default")
-    (version "0.7.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/data-default/data-default-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32 "04d5n8ybmcxba9qb6h389w9zfq1lvj81b82jh6maqp6pkhkmvydh"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-data-default-class"
-        ,ghc-data-default-class)
-       ("ghc-data-default-instances-base"
-        ,ghc-data-default-instances-base)
-       ("ghc-data-default-instances-containers"
-        ,ghc-data-default-instances-containers)
-       ("ghc-data-default-instances-dlist"
-        ,ghc-data-default-instances-dlist)
-       ("ghc-data-default-instances-old-locale"
-        ,ghc-data-default-instances-old-locale)))
-    (home-page "https://hackage.haskell.org/package/data-default")
-    (synopsis "Types with default values")
-    (description
-     "This package defines a class for types with a default value, and
-provides instances for types from the base, containers, dlist and old-locale
-packages.")
-    (license license:bsd-3)))
-
-(define-public ghc-data-default-class
-  (package
-    (name "ghc-data-default-class")
-    (version "0.1.2.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/data-default-class/"
-             "data-default-class-" version ".tar.gz"))
-       (sha256
-        (base32 "0miyjz8d4jyvqf2vp60lyfbnflx6cj2k8apmm9ly1hq0y0iv80ag"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/data-default-class")
-    (synopsis "Types with default values")
-    (description
-     "This package defines a class for types with default values.")
-    (license license:bsd-3)))
-
-(define-public ghc-data-default-instances-base
-  (package
-    (name "ghc-data-default-instances-base")
-    (version "0.1.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/"
-             "data-default-instances-base/"
-             "data-default-instances-base-" version ".tar.gz"))
-       (sha256
-        (base32 "0ym1sw3ssdzzifxxhh76qlv8kkmb2iclc158incv1dklyr9y8kw4"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-data-default-class" ,ghc-data-default-class)))
-    (home-page "https://hackage.haskell.org/package/data-default-instances-base")
-    (synopsis "Default instances for types in base")
-    (description
-     "This package provides default instances for types from the base
-package.")
-    (license license:bsd-3)))
-
-(define-public ghc-data-default-instances-containers
-  (package
-    (name "ghc-data-default-instances-containers")
-    (version "0.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/"
-             "data-default-instances-containers/"
-             "data-default-instances-containers-" version ".tar.gz"))
-       (sha256
-        (base32 "06h8xka031w752a7cjlzghvr8adqbl95xj9z5zc1b62w02phfpm5"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-data-default-class" ,ghc-data-default-class)))
-    (home-page "https://hackage.haskell.org/package/data-default-instances-containers")
-    (synopsis "Default instances for types in containers")
-    (description "Provides default instances for types from the containers
-package.")
-    (license license:bsd-3)))
-
-(define-public ghc-data-default-instances-dlist
-  (package
-    (name "ghc-data-default-instances-dlist")
-    (version "0.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/"
-             "data-default-instances-dlist/"
-             "data-default-instances-dlist-" version ".tar.gz"))
-       (sha256
-        (base32 "0narkdqiprhgayjiawrr4390h4rq4pl2pb6mvixbv2phrc8kfs3x"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-data-default-class" ,ghc-data-default-class)
-       ("ghc-dlist" ,ghc-dlist)))
-    (home-page "https://hackage.haskell.org/package/data-default-instances-dlist")
-    (synopsis "Default instances for types in dlist")
-    (description "Provides default instances for types from the dlist
-package.")
-    (license license:bsd-3)))
-
-(define-public ghc-code-page
-  (package
-  (name "ghc-code-page")
-  (version "0.1.3")
-  (source
-   (origin
-     (method url-fetch)
-     (uri (string-append
-           "https://hackage.haskell.org/package/code-page/code-page-"
-           version ".tar.gz"))
-      (sha256
-       (base32
-        "1491frk4jx6dlhifky9dvcxbsbcfssrz979a5hp5zn061rh8cp76"))))
-  (build-system haskell-build-system)
-  (home-page "https://github.com/RyanGlScott/code-page")
-  (synopsis "Windows code page library for Haskell")
-  (description "A cross-platform library with functions for adjusting
-code pages on Windows.  On all other operating systems, the library does
-nothing.")
-  (license license:bsd-3)))
-
-(define-public ghc-libffi
-  (package
-    (name "ghc-libffi")
-    (version "0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "libffi/libffi-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0g7jnhng3j7z5517aaqga0144aamibsbpgm3yynwyfzkq1kp0f28"))))
-    (build-system haskell-build-system)
-    (native-inputs `(("pkg-config" ,pkg-config)))
-    (inputs `(("libffi" ,libffi)))
-    (home-page "http://hackage.haskell.org/package/libffi")
-    (synopsis "Haskell binding to libffi")
-    (description
-     "A binding to libffi, allowing C functions of types only known at runtime
-to be called from Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-newtype-generics
-  (package
-    (name "ghc-newtype-generics")
-    (version "0.5.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "newtype-generics/newtype-generics-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0igyisw2djg19v9vkna1rwf47k97mvkvk4bbkmswznvbm00z15gj"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "http://github.com/sjakobi/newtype-generics")
-    (synopsis "Typeclass and set of functions for working with newtypes")
-    (description "The @code{Newtype} typeclass represents the packing and
-unpacking of a newtype, and allows you to operate under that newtype with
-functions such as @code{ala}.  Generics support was added in version 0.4,
-making this package a full replacement for the original newtype package,
-and an alternative to newtype-th.")
-    (license license:bsd-3)))
-
-(define-public ghc-memotrie
-  (package
-    (name "ghc-memotrie")
-    (version "0.6.9")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/MemoTrie/MemoTrie-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "157p0pi6rrq74a35mq6zkkycv4ah7xhkbrcmnkb9xf7pznw4aq0x"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-newtype-generics" ,ghc-newtype-generics)))
-    (home-page "https://github.com/conal/MemoTrie")
-    (synopsis "Trie-based memo functions")
-    (description "This package provides a functional library for creating
-efficient memo functions using tries.")
-    (license license:bsd-3)))
-
-(define-public ghc-tree-diff
-  (package
-    (name "ghc-tree-diff")
-    (version "0.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/tree-diff/tree-diff-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "049v44c520jy3icxlnrvbdblh3mjmvd7m6qmkzxbzkf02x63xqmz"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("4" "1rqxxyj6hqllahs11693g855cxz8mgnb490s7j1ksd300i5xgjsp")
-       #:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "tree-diff.cabal"
-               (("trifecta             >=1\\.7\\.1\\.1  && <1\\.8")
-                "trifecta             >=1.7.1.1  && <=2")))))))
-    (inputs
-     `(("ghc-aeson" ,ghc-aeson)
-       ("ghc-ansi-wl-pprint" ,ghc-ansi-wl-pprint)
-       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
-       ("ghc-base-compat" ,ghc-base-compat)
-       ("ghc-generics-sop" ,ghc-generics-sop)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-memotrie" ,ghc-memotrie)
-       ("ghc-parsers" ,ghc-parsers)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-scientific" ,ghc-scientific)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-uuid-types" ,ghc-uuid-types)
-       ("ghc-vector" ,ghc-vector)))
-    (native-inputs
-     `(("ghc-base-compat" ,ghc-base-compat)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
-       ("ghc-ansi-wl-pprint" ,ghc-ansi-wl-pprint)
-       ("ghc-trifecta" ,ghc-trifecta)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-golden" ,ghc-tasty-golden)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
-    (home-page "https://github.com/phadej/tree-diff")
-    (synopsis "Compute difference between (expression) trees")
-    (description "This Haskell library provides a function for computing
-the difference between (expression) trees.  It also provides a way to
-compute the difference between arbitrary abstract datatypes (ADTs) using
-@code{Generics}-derivable helpers.")
-    (license license:bsd-3)))
-
-(define-public ghc-haddock-library
-  (package
-    (name "ghc-haddock-library")
-    (version "1.5.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/haddock-library/haddock-library-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1cmbg8l5xrwpliclwy3l057raypjqy0hsg1h1743ahaj8gq10b7z"))
-       (patches (search-patches
-                 "ghc-haddock-library-unbundle.patch"))
-       (modules '((guix build utils)))
-       (snippet '(begin
-                   (delete-file-recursively "vendor")
-                   #t))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'relax-test-suite-dependencies
-           (lambda _
-             (substitute* "haddock-library.cabal"
-               (("base-compat\\s*\\^>= 0\\.9\\.3") "base-compat")
-               (("hspec\\s*\\^>= 2\\.4\\.4") "hspec"))))
-         ;; The release tarball does not contain the "fixtures/examples"
-         ;; directory, which is required for testing.  In the upstream
-         ;; repository, the directory exists and is populated.  Here, we
-         ;; create an empty directory to placate the tests.
-         (add-before 'check 'add-examples-directory
-           (lambda _
-             (mkdir "fixtures/examples")
-             #t)))))
-    (native-inputs
-     `(("ghc-base-compat" ,ghc-base-compat)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-optparse-applicative" ,ghc-optparse-applicative)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-tree-diff" ,ghc-tree-diff)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://www.haskell.org/haddock/")
-    (synopsis "Library exposing some functionality of Haddock")
-    (description
-     "Haddock is a documentation-generation tool for Haskell libraries.  These
-modules expose some functionality of it without pulling in the GHC dependency.
-Please note that the API is likely to change so specify upper bounds in your
-project if you can't release often.  For interacting with Haddock itself, see
-the ‘haddock’ package.")
-    (license license:bsd-3)))
-
-(define-public ghc-haddock-api
-  (package
-    (name "ghc-haddock-api")
-    (version "2.19.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/haddock-api/haddock-api-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0c6i7sljp7myz25d90gyw68a90i5jcrkajkxcciikp2hjirfaas3"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "haddock-api.cabal"
-               (("Cabal           \\^>= 2\\.0\\.0")
-                "Cabal           ^>= 2.2.0")
-               (("hspec           \\^>= 2\\.4\\.4")
-                "hspec            >= 2.4.4 && < 2.6")))))))
-    (inputs
-     `(("ghc-paths" ,ghc-paths)
-       ("ghc-haddock-library" ,ghc-haddock-library)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://www.haskell.org/haddock/")
-    (synopsis "API for documentation-generation tool Haddock")
-    (description "This package provides an API to Haddock, the
-documentation-generation tool for Haskell libraries.")
-    (license license:bsd-3)))
-
-(define-public ghc-haddock
-  (package
-    (name "ghc-haddock")
-    (version "2.19.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/haddock/haddock-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1g1j9j0hf2yhyyh0gwz6bzbvfvliqz9x8a8hnkmwghm7w3xa6sb7"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         ;; There are four test suites that require the ghc-haddock-test
-         ;; package, which no longer builds with GHC 8.4.3.  This phase
-         ;; removes these four test suites from the Cabal file, so that we
-         ;; do not need ghc-haddock-test as an input.
-         (add-before 'configure 'remove-haddock-test-test-suites
-           (lambda _
-             (use-modules (ice-9 rdelim))
-             (with-atomic-file-replacement "haddock.cabal"
-               (lambda (in out)
-                 (let loop ((line (read-line in 'concat)) (deleting? #f))
-                   (cond
-                    ((eof-object? line) #t)
-                    ((string-every char-set:whitespace line)
-                     (unless deleting? (display line out))
-                     (loop (read-line in 'concat) #f))
-                    ((member line '("test-suite html-test\n"
-                                    "test-suite hypsrc-test\n"
-                                    "test-suite latex-test\n"
-                                    "test-suite hoogle-test\n"))
-                     (loop (read-line in 'concat) #t))
-                    (else
-                     (unless deleting? (display line out))
-                     (loop (read-line in 'concat) deleting?)))))))))))
-    (inputs `(("ghc-haddock-api" ,ghc-haddock-api)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)))
-    (home-page "https://www.haskell.org/haddock/")
-    (synopsis
-     "Documentation-generation tool for Haskell libraries")
-    (description
-     "Haddock is a documentation-generation tool for Haskell libraries.")
-    (license license:bsd-3)))
-
-(define-public ghc-simple-reflect
-  (package
-    (name "ghc-simple-reflect")
-    (version "0.3.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/simple-reflect/simple-reflect-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0ayvrx5cm8n6db21jiyjmk5h93pw7cz1707hih09hlhk9jh5x0h7"))))
-    (build-system haskell-build-system)
-    (home-page
-     "https://twanvl.nl/blog/haskell/simple-reflection-of-expressions")
-    (synopsis
-     "Simple reflection of expressions containing variables")
-    (description
-     "This package allows simple reflection of expressions containing
-variables.  Reflection here means that a Haskell expression is turned into a
-string.  The primary aim of this package is teaching and understanding; there
-are no options for manipulating the reflected expressions beyond showing
-them.")
-    (license license:bsd-3)))
-
-(define-public ghc-haskell-src
-  (package
-    (name "ghc-haskell-src")
-    (version "1.0.3.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/haskell-src/haskell-src-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1g4dj1f0j68bhn4ixfac63wjzy6gsp6kwgxryb1k5nl3i0g99d5l"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-happy" ,ghc-happy)
-       ("ghc-syb" ,ghc-syb)))
-    (home-page
-     "https://hackage.haskell.org/package/haskell-src")
-    (synopsis
-     "Support for manipulating Haskell source code")
-    (description
-     "The @code{haskell-src} package provides support for manipulating Haskell
-source code.  The package provides a lexer, parser and pretty-printer, and a
-definition of a Haskell abstract syntax tree (AST).  Common uses of this
-package are to parse or generate Haskell 98 code.")
-    (license license:bsd-3)))
-
-(define-public ghc-alex
-  (package
-    (name "ghc-alex")
-    (version "3.2.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/alex/alex-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0cpjixgsr0b2x4s6hz4aa6gnmjw9i7xd9nlfi8m37zqlidq4v3nm"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'check 'set-check-variables
-           (lambda _
-             (setenv "PATH" (string-append (getcwd) "/dist/build/alex:"
-                                           (getenv "PATH")))
-             (setenv "alex_datadir" (string-append (getcwd) "/data"))
-             #t)))))
-    (inputs `(("ghc-quickcheck" ,ghc-quickcheck)))
-    (native-inputs
-     `(("which" ,which)))
-    (home-page "https://www.haskell.org/alex/")
-    (synopsis
-     "Tool for generating lexical analysers in Haskell")
-    (description
-     "Alex is a tool for generating lexical analysers in Haskell.  It takes a
-description of tokens based on regular expressions and generates a Haskell
-module containing code for scanning text efficiently.  It is similar to the
-tool lex or flex for C/C++.")
-    (license license:bsd-3)))
-
-(define-public ghc-cgi
-  (package
-    (name "ghc-cgi")
-    (version "3001.3.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/cgi/cgi-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1hbpplss1m4rdpm4ibip6fpimlhssqa14fl338kl2jbc463i64cj"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "cgi.cabal"
-               (("exceptions < 0\\.9")
-                "exceptions < 0.11")
-               (("time >= 1\\.5 && < 1\\.7")
-                "time >= 1.5 && < 1.9")
-               (("doctest >= 0\\.8 && < 0\\.12")
-                "doctest >= 0.8 && < 0.17")
-               (("QuickCheck >= 2\\.8\\.1 && < 2\\.10")
-                "QuickCheck >= 2.8.1 && < 2.12")))))))
-    (inputs
-     `(("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-multipart" ,ghc-multipart)
-       ("ghc-network-uri" ,ghc-network-uri)
-       ("ghc-network" ,ghc-network)))
-    (native-inputs
-     `(("ghc-doctest" ,ghc-doctest)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page
-     "https://github.com/cheecheeo/haskell-cgi")
-    (synopsis "Library for writing CGI programs")
-    (description
-     "This is a Haskell library for writing CGI programs.")
-    (license license:bsd-3)))
-
-(define-public ghc-cmdargs
-  (package
-    (name "ghc-cmdargs")
-    (version "0.10.20")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/cmdargs/cmdargs-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0cbkmgrcnwgigg6z88y3c09gm7g6dwm7gzbgr53h8k1xik29s9hf"))))
-    (build-system haskell-build-system)
-    (home-page
-     "http://community.haskell.org/~ndm/cmdargs/")
-    (synopsis "Command line argument processing")
-    (description
-     "This library provides an easy way to define command line parsers.")
-    (license license:bsd-3)))
-
-(define-public ghc-concatenative
-  (package
-    (name "ghc-concatenative")
-    (version "1.0.1")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://hackage.haskell.org/package/concatenative/concatenative-"
-                    version ".tar.gz"))
-              (sha256
-               (base32
-                "05xwqvcdnk8bsyj698ab9jxpa1nk23pf3m7wi9mwmw0q8n99fngd"))))
-    (build-system haskell-build-system)
-    (home-page
-     "https://patch-tag.com/r/salazar/concatenative/snapshot/current/content/pretty")
-    (synopsis "Library for postfix control flow")
-    (description
-     "Concatenative gives Haskell Factor-style combinators and arrows for
-postfix notation.  For more information on stack based languages, see
-@uref{https://concatenative.org}.")
-    (license license:bsd-3)))
-
-(define-public ghc-happy
-  (package
-    (name "ghc-happy")
-    (version "1.19.9")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/happy/happy-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "138xpxdb7x62lpmgmb6b3v3vgdqqvqn4273jaap3mjmc2gla709y"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'skip-test-issue93
-           (lambda _
-             ;; Tests run out of memory on a system with 2GB of available RAM,
-             ;; in 'issue93.a.hs' and 'issue93.n.hs'.
-             (substitute* "tests/Makefile"
-               ((" issue93.y ") " "))
-             #t)))))
-    (home-page "https://hackage.haskell.org/package/happy")
-    (synopsis "Parser generator for Haskell")
-    (description "Happy is a parser generator for Haskell.  Given a grammar
-specification in BNF, Happy generates Haskell code to parse the grammar.
-Happy works in a similar way to the yacc tool for C.")
-    (license license:bsd-3)))
-
-(define-public ghc-haskell-lexer
-  (package
-    (name "ghc-haskell-lexer")
-    (version "1.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/haskell-lexer/haskell-lexer-"
-             version ".tar.gz"))
-       (sha256
-        (base32 "1wyxd8x33x4v5vxyzkhm610pl86gbkc8y439092fr1735q9g7kfq"))))
-    (build-system haskell-build-system)
-    (home-page "http://hackage.haskell.org/package/haskell-lexer")
-    (synopsis "Fully compliant Haskell 98 lexer")
-    (description
-     "This package provides a fully compliant Haskell 98 lexer.")
-    (license license:bsd-3)))
-
-(define-public ghc-pretty-show
-  (package
-    (name "ghc-pretty-show")
-    (version "1.7")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/pretty-show/"
-                           "pretty-show-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0br7pkxqqqhby2j2v1g847lgqsrasx56g1jw3dhmjh4flzs6warq"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-haskell-lexer" ,ghc-haskell-lexer)
-       ("ghc-happy" ,ghc-happy)))
-    (home-page "http://wiki.github.com/yav/pretty-show")
-    (synopsis "Tools for working with derived `Show` instances")
-    (description
-     "This package provides a library and an executable for working with
-derived @code{Show} instances.  By using the library, derived @code{Show}
-instances can be parsed into a generic data structure.  The @code{ppsh} tool
-uses the library to produce human-readable versions of @code{Show} instances,
-which can be quite handy for debugging Haskell programs.  We can also render
-complex generic values into an interactive Html page, for easier
-examination.")
-    (license license:expat)))
-
-(define-public ghc-haskell-src-exts
-  (package
-    (name "ghc-haskell-src-exts")
-    (version "1.20.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/haskell-src-exts/haskell-src-exts-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1sm3z4v1p5yffg01ldgavz71s3bvfhjfa13k428rk14bpkl8crlz"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("cpphs" ,cpphs)
-       ("ghc-happy" ,ghc-happy)
-       ("ghc-pretty-show" ,ghc-pretty-show)))
-    (native-inputs
-     `(("ghc-smallcheck" ,ghc-smallcheck)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-smallcheck" ,ghc-tasty-smallcheck)
-       ("ghc-tasty-golden" ,ghc-tasty-golden)))
-    (home-page "https://github.com/haskell-suite/haskell-src-exts")
-    (synopsis "Library for manipulating Haskell source")
-    (description "Haskell-Source with Extensions (HSE, haskell-src-exts) is an
-extension of the standard @code{haskell-src} package, and handles most
-registered syntactic extensions to Haskell.  All extensions implemented in GHC
-are supported.  Apart from these standard extensions, it also handles regular
-patterns as per the HaRP extension as well as HSX-style embedded XML syntax.")
-    (license license:bsd-3)))
-
-(define-public ghc-haskell-src-exts-util
-  (package
-    (name "ghc-haskell-src-exts-util")
-    (version "0.2.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "haskell-src-exts-util/haskell-src-exts-util-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1803718paq89f8pdck4mb88hv2k1ah9lxzq0lgjgwi9n88ryycz8"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-data-default" ,ghc-data-default)
-       ("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-uniplate" ,ghc-uniplate)))
-    (home-page "https://github.com/pepeiborra/haskell-src-exts-util")
-    (synopsis "Helper functions for working with haskell-src-exts trees")
-    (description
-     "This package provides helper functions for working with
-@code{haskell-src-exts} trees.")
-    (license license:bsd-3)))
-
-(define-public ghc-refact
-  (package
-    (name "ghc-refact")
-    (version "0.3.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "refact/refact-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0v0zxcx29b8jxs2kgy9csykqcp8kzhdvyylw2xfwmj4pfxr2kl0a"))))
-    (build-system haskell-build-system)
-    (home-page "http://hackage.haskell.org/package/refact")
-    (synopsis "Specify refactorings to perform with apply-refact")
-    (description
-     "This library provides a datatype which can be interpreted by
-@code{apply-refact}.  It exists as a separate library so that applications can
-specify refactorings without depending on GHC.")
-    (license license:bsd-3)))
-
-(define-public hlint
-  (package
-    (name "hlint")
-    (version "2.1.10")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/" name
-             "/" name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "19as2m9g75cr6n1agzvsij0cvqhb0wbjlk31w4y5d5mns87dki0w"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("cpphs" ,cpphs)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-yaml" ,ghc-yaml)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-data-default" ,ghc-data-default)
-       ("ghc-cmdargs" ,ghc-cmdargs)
-       ("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
-       ("ghc-haskell-src-exts-util" ,ghc-haskell-src-exts-util)
-       ("ghc-uniplate" ,ghc-uniplate)
-       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
-       ("ghc-extra" ,ghc-extra)
-       ("ghc-refact" ,ghc-refact)
-       ("ghc-aeson" ,ghc-aeson)
-       ("hscolour" ,hscolour)))
-    (home-page "http://community.haskell.org/~ndm/hlint/")
-    (synopsis "Suggest improvements for Haskell source code")
-    (description "HLint reads Haskell programs and suggests changes that
-hopefully make them easier to read.  HLint also makes it easy to disable
-unwanted suggestions, and to add your own custom suggestions.")
-    (license license:bsd-3)))
-
-(define-public ghc-resourcet
-  (package
-    (name "ghc-resourcet")
-    (version "1.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/resourcet/"
-                           "resourcet-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0rzjzh34s36ssign7akqjnwnjxf11c3511wk7ky0xxy0dqmc2rg7"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-transformers-base" ,ghc-transformers-base)
-       ("ghc-monad-control" ,ghc-monad-control)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-mmorph" ,ghc-mmorph)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-unliftio-core" ,ghc-unliftio-core)))
-    (native-inputs
-     `(("ghc-lifted-base" ,ghc-lifted-base)
-       ("ghc-hspec" ,ghc-hspec)))
-    (home-page "https://github.com/snoyberg/conduit")
-    (synopsis "Deterministic allocation and freeing of scarce resources")
-    (description "ResourceT is a monad transformer which creates a region of
-code where you can safely allocate resources.")
-    (license license:bsd-3)))
-
-(define-public ghc-objectname
-  (package
-    (name "ghc-objectname")
-    (version "1.1.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/ObjectName/ObjectName-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "046jm94rmm46cicd31pl54vdvfjvhd9ffbfycy2lxzc0fliyznvj"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/ObjectName")
-    (synopsis "Helper library for Haskell OpenGL")
-    (description "This tiny package contains the class ObjectName, which
-corresponds to the general notion of explicitly handled identifiers for API
-objects, e.g. a texture object name in OpenGL or a buffer object name in
-OpenAL.")
-    (license license:bsd-3)))
-
-(define-public ghc-sdl
-  (package
-    (name "ghc-sdl")
-    (version "0.6.7.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/SDL/SDL-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "00y67v80a8l09i3k76z09lg25kw72ivl09nag8ckdlk4a0cfnzfq"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("sdl" ,sdl)))
-    (home-page "https://hackage.haskell.org/package/SDL")
-    (synopsis "LibSDL for Haskell")
-    (description "Simple DirectMedia Layer (libSDL) is a cross-platform
-multimedia library designed to provide low level access to audio, keyboard,
-mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.  It is used
-by MPEG playback software, emulators, and many popular games, including the
-award winning Linux port of \"Civilization: Call To Power.\"")
-    (license license:bsd-3)))
-
-(define-public ghc-sdl-mixer
-  (package
-    (name "ghc-sdl-mixer")
-    (version "0.6.3.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/SDL-mixer/SDL-mixer-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0k26hqgdh789ka3mv4dsk6rin6x6vwcs6hjmnsqq7j3mnrh1342r"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:configure-flags
-       (let* ((sdl-mixer (assoc-ref %build-inputs "sdl-mixer"))
-              (sdl-mixer-include (string-append sdl-mixer "/include/SDL")))
-         (list (string-append "--extra-include-dirs=" sdl-mixer-include)))))
-    (inputs
-     `(("ghc-sdl" ,ghc-sdl)
-       ("sdl-mixer" ,sdl-mixer)))
-    (home-page "https://hackage.haskell.org/package/SDL-mixer")
-    (synopsis "Haskell bindings to libSDL_mixer")
-    (description "SDL_mixer is a sample multi-channel audio mixer library.  It
-supports any number of simultaneously playing channels of 16 bit stereo audio,
-plus a single channel of music, mixed by the popular MikMod MOD, Timidity
-MIDI, Ogg Vorbis, and SMPEG MP3 libraries.")
-    (license license:bsd-3)))
-
-(define-public ghc-sdl-image
-  (package
-    (name "ghc-sdl-image")
-    (version "0.6.2.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/SDL-image/SDL-image-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1gxwrvswgwjw6g7ym52gik22l9l3ljy592phv97jdmcf3gi6qcg1"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:configure-flags
-       (let* ((sdl-image (assoc-ref %build-inputs "sdl-image"))
-              (sdl-image-include (string-append sdl-image "/include/SDL")))
-         (list (string-append "--extra-include-dirs=" sdl-image-include)))))
-    (inputs
-     `(("ghc-sdl" ,ghc-sdl)
-       ("sdl-image" ,sdl-image)))
-    (home-page "https://hackage.haskell.org/package/SDL-image")
-    (synopsis "Haskell bindings to libSDL_image")
-    (description "SDL_image is an image file loading library.  It loads images
-as SDL surfaces, and supports the following formats: BMP, GIF, JPEG, LBM, PCX,
-PNG, PNM, TGA, TIFF, XCF, XPM, XV.")
-    (license license:bsd-3)))
-
-(define-public ghc-half
-  (package
-    (name "ghc-half")
-    (version "0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/half/half-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "14r0nx8hm5fic9gz0ybjjw4kyc758zfgvhhwvzsshpx5caq6zch6"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/ekmett/half")
-    (synopsis "Half-precision floating-point computations")
-    (description "This library provides a half-precision floating-point
-computation library for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-fixed
-  (package
-    (name "ghc-fixed")
-    (version "0.2.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/fixed/fixed-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1qhmwx8iqshns0crmr9d2f8hm65jxbcp3dvv0c39v34ra7if3a94"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/ekmett/fixed")
-    (synopsis "Signed 15.16 precision fixed point arithmetic")
-    (description
-     "This package provides functions for signed 15.16 precision fixed point
-arithmetic.")
-    (license license:bsd-3)))
-
-(define-public ghc-openglraw
-  (package
-    (name "ghc-openglraw")
-    (version "3.3.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/OpenGLRaw/OpenGLRaw-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1x8w3x308jldj2c1xqcq3a3sc2jc06pdpgqkgjsmixi1skv4a1vb"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-half" ,ghc-half)
-       ("ghc-fixed" ,ghc-fixed)
-       ("glu" ,glu)))
-    (home-page "https://www.haskell.org/haskellwiki/Opengl")
-    (synopsis "Raw Haskell bindings for the OpenGL graphics system")
-    (description "OpenGLRaw is a raw Haskell binding for the OpenGL 4.5
-graphics system and lots of OpenGL extensions.  It is basically a 1:1 mapping
-of OpenGL's C API, intended as a basis for a nicer interface.  OpenGLRaw
-offers access to all necessary functions, tokens and types plus a general
-facility for loading extension entries.  The module hierarchy closely mirrors
-the naming structure of the OpenGL extensions, making it easy to find the
-right module to import.  All API entries are loaded dynamically, so no special
-C header files are needed for building this package.  If an API entry is not
-found at runtime, a userError is thrown.")
-    (license license:bsd-3)))
-
-(define-public ghc-glut
-  (package
-    (name "ghc-glut")
-    (version "2.7.0.14")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/GLUT/GLUT-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "01i162fly4q1751fp60lgkzlb8kr0qqbvmxj74zc6skb19qggy2w"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-statevar" ,ghc-statevar)
-       ("ghc-opengl" ,ghc-opengl)
-       ("ghc-openglraw" ,ghc-openglraw)
-       ("freeglut" ,freeglut)))
-    (home-page "https://www.haskell.org/haskellwiki/Opengl")
-    (synopsis "Haskell bindings for the OpenGL Utility Toolkit")
-    (description "This library provides Haskell bindings for the OpenGL
-Utility Toolkit, a window system-independent toolkit for writing OpenGL
-programs.")
-    (license license:bsd-3)))
-
-(define-public ghc-gluraw
-  (package
-    (name "ghc-gluraw")
-    (version "2.0.0.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/GLURaw/GLURaw-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1i2xi35n5z0d372px9mh6cyhgg1m0cfaiy3fnspkf6kbn9fgsqxq"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-openglraw" ,ghc-openglraw)))
-    (home-page "https://www.haskell.org/haskellwiki/Opengl")
-    (synopsis "Raw Haskell bindings GLU")
-    (description "GLURaw is a raw Haskell binding for the GLU 1.3 OpenGL
-utility library.  It is basically a 1:1 mapping of GLU's C API, intended as a
-basis for a nicer interface.")
-    (license license:bsd-3)))
-
-(define-public ghc-opengl
-  (package
-    (name "ghc-opengl")
-    (version "3.0.2.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/OpenGL/OpenGL-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "19vxwvx2n8zq2klj176l25n2b64ybp0b8mhm4p46gvpcivz41fjc"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-objectname" ,ghc-objectname)
-       ("ghc-gluraw" ,ghc-gluraw)
-       ("ghc-statevar" ,ghc-statevar)
-       ("ghc-openglraw" ,ghc-openglraw)))
-    (home-page "https://www.haskell.org/haskellwiki/Opengl")
-    (synopsis "Haskell bindings for the OpenGL graphics system")
-    (description "This package provides Haskell bindings for the OpenGL
-graphics system (GL, version 4.5) and its accompanying utility library (GLU,
-version 1.3).")
-    (license license:bsd-3)))
-
-(define-public ghc-streaming-commons
-  (package
-    (name "ghc-streaming-commons")
-    (version "0.2.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "streaming-commons/streaming-commons-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1lmyx3wkjsayhy5yilzvy0kf8qwmycwlk26r1d8f3cxbfhkr7s52"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-async" ,ghc-async)
-       ("ghc-blaze-builder" ,ghc-blaze-builder)
-       ("ghc-network" ,ghc-network)
-       ("ghc-random" ,ghc-random)
-       ("ghc-zlib" ,ghc-zlib)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://hackage.haskell.org/package/streaming-commons")
-    (synopsis "Conduit and pipes needed by some streaming data libraries")
-    (description "This package provides low-dependency functionality commonly
-needed by various Haskell streaming data libraries, such as @code{conduit} and
-@code{pipe}s.")
-    (license license:expat)))
-
-(define-public cpphs
-  (package
-    (name "cpphs")
-    (version "1.20.8")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/" name "/"
-             name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1bh524asqhk9v1s0wvipl0hgn7l63iy3js867yv0z3h5v2kn8vg5"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-polyparse" ,ghc-polyparse)
-       ("ghc-old-locale" ,ghc-old-locale)
-       ("ghc-old-time" ,ghc-old-time)))
-    (home-page "http://projects.haskell.org/cpphs/")
-    (synopsis "Liberalised re-implementation of cpp, the C pre-processor")
-    (description "Cpphs is a re-implementation of the C pre-processor that is
-both more compatible with Haskell, and itself written in Haskell so that it
-can be distributed with compilers.  This version of the C pre-processor is
-pretty-much feature-complete and compatible with traditional (K&R)
-pre-processors.  Additional features include: a plain-text mode; an option to
-unlit literate code files; and an option to turn off macro-expansion.")
-    (license (list license:lgpl2.1+ license:gpl3+))))
-
-(define-public ghc-reflection
-  (package
-    (name "ghc-reflection")
-    (version "2.1.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/reflection/reflection-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0kf4a5ijw6jfnfibjcrpdy9vzh1n6v2pxia8dhyyqdissiwc8bzj"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-tagged" ,ghc-tagged)))
-    (home-page "https://github.com/ekmett/reflection")
-    (synopsis "Reify arbitrary terms into types that can be reflected back
-into terms")
-    (description "This package addresses the 'configuration problem' which is
-propagating configurations that are available at run-time, allowing multiple
-configurations to coexist without resorting to mutable global variables or
-@code{System.IO.Unsafe.unsafePerformIO}.")
-    (license license:bsd-3)))
-
-(define-public ghc-old-locale
-  (package
-    (name "ghc-old-locale")
-    (version "1.0.0.7")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/old-locale/old-locale-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32 "0l3viphiszvz5wqzg7a45zp40grwlab941q5ay29iyw8p3v8pbyv"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("2" "04b9vn007hlvsrx4ksd3r8r3kbyaj2kvwxchdrmd4370qzi8p6gs")))
-    (home-page "https://hackage.haskell.org/package/old-locale")
-    (synopsis "Adapt to locale conventions")
-    (description
-     "This package provides the ability to adapt to locale conventions such as
-date and time formats.")
-    (license license:bsd-3)))
-
-(define-public ghc-old-time
-  (package
-    (name "ghc-old-time")
-    (version "1.1.0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/old-time/old-time-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1h9b26s3kfh2k0ih4383w90ibji6n0iwamxp6rfp2lbq1y5ibjqw"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("2" "1j6ln1dkvhdvnwl33bp0xf9lhc4sybqk0aw42p8cq81xwwzbn7y9")))
-    (inputs
-     `(("ghc-old-locale" ,ghc-old-locale)))
-    (home-page "https://hackage.haskell.org/package/old-time")
-    (synopsis "Time compatibility library for Haskell")
-    (description "Old-time is a package for backwards compatibility with the
-old @code{time} library.  For new projects, the newer
-@uref{https://hackage.haskell.org/package/time, time library} is recommended.")
-    (license license:bsd-3)))
-
-(define-public ghc-data-default-instances-old-locale
-  (package
-    (name "ghc-data-default-instances-old-locale")
-    (version "0.0.1")
-    (source
-      (origin
-        (method url-fetch)
-        (uri (string-append
-              "https://hackage.haskell.org/package/"
-              "data-default-instances-old-locale/"
-              "data-default-instances-old-locale-" version ".tar.gz"))
-        (sha256
-          (base32 "00h81i5phib741yj517p8mbnc48myvfj8axzsw44k34m48lv1lv0"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-data-default-class" ,ghc-data-default-class)
-       ("ghc-old-locale" ,ghc-old-locale)))
-    (home-page
-      "https://hackage.haskell.org/package/data-default-instances-old-locale")
-    (synopsis "Default instances for types in old-locale")
-    (description "Provides Default instances for types from the old-locale
-  package.")
-    (license license:bsd-3)))
-
-(define-public ghc-dlist
-  (package
-    (name "ghc-dlist")
-    (version "0.8.0.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/dlist/dlist-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32 "0yirrh0s6acjy9hhvf5fqg2d6q5y6gm9xs04v6w1imndh1xqdwdc"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/spl/dlist")
-    (synopsis "Difference lists")
-    (description
-     "Difference lists are a list-like type supporting O(1) append.  This is
-particularly useful for efficient logging and pretty printing (e.g. with the
-Writer monad), where list append quickly becomes too expensive.")
-    (license license:bsd-3)))
-
-(define-public ghc-extensible-exceptions
-  (package
-    (name "ghc-extensible-exceptions")
-    (version "0.1.1.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "extensible-exceptions/extensible-exceptions-"
-                           version ".tar.gz"))
-       (sha256
-        (base32 "1273nqws9ij1rp1bsq5jc7k2jxpqa0svawdbim05lf302y0firbc"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/extensible-exceptions")
-    (synopsis "Extensible exceptions for Haskell")
-    (description
-     "This package provides extensible exceptions for both new and old
-versions of GHC (i.e., < 6.10).")
-    (license license:bsd-3)))
-
-(define-public ghc-echo
-  (package
-    (name "ghc-echo")
-    (version "0.1.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/echo/echo-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "1vw5ykpwhr39wc0hhcgq3r8dh59zq6ib4zxbz1qd2wl21wqhfkvh"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("1" "0br8wfiybcw5hand4imiw0i5hacdmrax1dv8g95f35gazffbx42l")))
-    (home-page "https://github.com/RyanGlScott/echo")
-    (synopsis "Echo terminal input portably")
-    (description "The @code{base} library exposes the @code{hGetEcho} and
-@code{hSetEcho} functions for querying and setting echo status, but
-unfortunately, neither function works with MinTTY consoles on Windows.
-This library provides an alternative interface which works with both
-MinTTY and other consoles.")
-    (license license:bsd-3)))
-
-(define-public ghc-hackage-security
-  (package
-    (name "ghc-hackage-security")
-    (version "0.5.3.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "hackage-security/hackage-security-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "08bwawc7ramgdh54vcly2m9pvfchp0ahhs8117jajni6x4bnx66v"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:tests? #f)) ; Tests fail because of framework updates.
-    (inputs
-     `(("ghc-base16-bytestring" ,ghc-base16-bytestring)
-       ("ghc-base64-bytestring" ,ghc-base64-bytestring)
-       ("ghc-cryptohash-sha256" ,ghc-cryptohash-sha256)
-       ("ghc-ed25519" ,ghc-ed25519)
-       ("ghc-network" ,ghc-network)
-       ("ghc-network-uri" ,ghc-network-uri)
-       ("ghc-tar" ,ghc-tar)
-       ("ghc-zlib" ,ghc-zlib)))
-    (native-inputs
-     `(("ghc-network-uri" ,ghc-network-uri)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-tar" ,ghc-tar)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-       ("ghc-temporary" ,ghc-temporary)
-       ("ghc-zlib" ,ghc-zlib)))
-    (home-page "https://github.com/haskell/hackage-security")
-    (synopsis "Hackage security library")
-    (description "This Hackage security library provides both server and
-client utilities for securing @uref{http://hackage.haskell.org/, the
-Hackage package server}.  It is based on
-@uref{http://theupdateframework.com/, The Update Framework}, a set of
-recommendations developed by security researchers at various universities
-in the US as well as developers on the @uref{https://www.torproject.org/,
-Tor project}.")
-    (license license:bsd-3)))
-
-(define-public ghc-resolv
-  (package
-    (name "ghc-resolv")
-    (version "0.1.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/resolv/resolv-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0wh7wj56l3f2bylz563g5g04a4nydj8acv60hpwa7k3mn792xca9"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("1" "15ay4n3x8c09cb3h4z1nan84yd3n9zpgvi6h114hk98bq10k8mma")
-       #:tests? #f)) ; The required test frameworks are too old.
-    (inputs
-     `(("ghc-base16-bytestring" ,ghc-base16-bytestring)))
-    (home-page "https://github.com/haskell/hackage-security")
-    (synopsis "Domain Name Service (DNS) lookup via @code{libresolv}")
-    (description "This package implements an API for accessing the
-@uref{https://tools.ietf.org/html/rfc1035, Domain Name Service (DNS)}
-resolver service via the standard @code{libresolv} system library (whose
-API is often available directly via the standard @code{libc} C library) on
-Unix systems.")
-    (license license:gpl3)))
-
-(define-public cabal-install
- (package
-  (name "cabal-install")
-   (version "2.2.0.0")
-   (source
-    (origin
-     (method url-fetch)
-      (uri (string-append
-            "https://hackage.haskell.org/package/cabal-install/cabal-install-"
-            version
-            ".tar.gz"))
-      (sha256
-       (base32 "1nd3ch7qr4dpfxhgkcq2lnhvszx2kjgnn1kwb44vk9y5jgfs4mn8"))))
-   (arguments `(#:tests? #f)) ; FIXME: testing libraries are missing.
-   (build-system haskell-build-system)
-   (inputs
-    `(("ghc-async" ,ghc-async)
-      ("ghc-base16-bytestring" ,ghc-base16-bytestring)
-      ("ghc-cryptohash-sha256" ,ghc-cryptohash-sha256)
-      ("ghc-echo" ,ghc-echo)
-      ("ghc-edit-distance" ,ghc-edit-distance)
-      ("ghc-hackage-security" ,ghc-hackage-security)
-      ("ghc-hashable" ,ghc-hashable)
-      ("ghc-http" ,ghc-http)
-      ("ghc-network-uri" ,ghc-network-uri)
-      ("ghc-network" ,ghc-network)
-      ("ghc-random" ,ghc-random)
-      ("ghc-resolv" ,ghc-resolv)
-      ("ghc-tar" ,ghc-tar)
-      ("ghc-zlib" ,ghc-zlib)))
-   (home-page "https://www.haskell.org/cabal/")
-   (synopsis "Command-line interface for Cabal and Hackage")
-   (description
-    "The cabal command-line program simplifies the process of managing
-Haskell software by automating the fetching, configuration, compilation and
-installation of Haskell libraries and programs.")
-   (license license:bsd-3)))
-
-(define-public cabal-doctest
-  (package
-    (name "cabal-doctest")
-    (version "1.0.6")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "cabal-doctest/cabal-doctest-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0bgd4jdmzxq5y465r4sf4jv2ix73yvblnr4c9wyazazafddamjny"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("1" "1bk85avgc93yvcggwbk01fy8nvg6753wgmaanhkry0hz55h7mpld")))
-    (home-page "https://github.com/phadej/cabal-doctest")
-    (synopsis "Setup.hs helper for running doctests")
-    (description
-     "To properly work, the @code{doctest} package needs plenty of
-configuration.  This library provides the common bits for writing custom
-@file{Setup.hs} files.")
-    (license license:bsd-3)))
-
-(define-public ghc-parsec-numbers
-  (package
-    (name "ghc-parsec-numbers")
-    (version "0.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "parsec-numbers/parsec-numbers-" version ".tar.gz"))
-       (sha256
-        (base32 "1gzy4v3r02kvdxvgg1nj83mmb6aph2v4ilf9c7y6nbvi2x49l0bp"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/parsec-numbers")
-    (synopsis "Utilities for parsing numbers from strings")
-    (description
-     "This package provides the number parsers without the need to use a large
-(and unportable) token parser.")
-    (license license:bsd-3)))
-
-(define-public ghc-paths
-  (package
-    (name "ghc-paths")
-    (version "0.1.0.9")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/ghc-paths/ghc-paths-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0ibrr1dxa35xx20cpp8jzgfak1rdmy344dfwq4vlq013c6w8z9mg"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/simonmar/ghc-paths")
-    (synopsis
-     "Knowledge of GHC's installation directories")
-    (description
-     "Knowledge of GHC's installation directories.")
-    (license license:bsd-3)))
-
-(define-public ghc-utf8-string
-  (package
-    (name "ghc-utf8-string")
-    (version "1.0.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/utf8-string/utf8-string-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32 "0h7imvxkahiy8pzr8cpsimifdfvv18lizrb33k6mnq70rcx9w2zv"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("3" "02vhj5gykkqa2dyn7s6gn8is1b5fdn9xcqqvlls268g7cpv6rk38")))
-    (home-page "https://github.com/glguy/utf8-string/")
-    (synopsis "Support for reading and writing UTF8 Strings")
-    (description
-     "A UTF8 layer for Strings.  The utf8-string package provides operations
-for encoding UTF8 strings to Word8 lists and back, and for reading and writing
-UTF8 without truncation.")
-    (license license:bsd-3)))
-
-(define-public ghc-setenv
-  (package
-    (name "ghc-setenv")
-    (version "0.1.1.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/setenv/setenv-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0cnbgrvb9byyahb37zlqrj05rj25v190crgcw8wmlgf0mwwxyn73"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/setenv")
-    (synopsis "Library for setting environment variables")
-    (description "This package provides a Haskell library for setting
-environment variables.")
-    (license license:expat)))
-
-(define-public ghc-setlocale
-  (package
-    (name "ghc-setlocale")
-    (version "1.0.0.8")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://hackage.haskell.org/package/setlocale-"
-                    version "/setlocale-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0sdrsmkhw08483d73ysgm2926fdbhii61br03lqpqw0lfzj4ilbd"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/setlocale")
-    (synopsis "Haskell bindings to setlocale")
-    (description "This package provides Haskell bindings to the
-@code{setlocale} C function.")
-    (license license:bsd-3)))
-
-(define-public ghc-x11
-  (package
-    (name "ghc-x11")
-    (version "1.9")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/X11/"
-                           "X11-" version ".tar.gz"))
-       (sha256
-        (base32 "1f8dy6ckkyvpcv7zlniyv01cqjb9lgqscm8pml58cvwc7n38w4qh"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("libx11" ,libx11)
-       ("libxrandr" ,libxrandr)
-       ("libxinerama" ,libxinerama)
-       ("libxscrnsaver" ,libxscrnsaver)
-       ("ghc-data-default" ,ghc-data-default)))
-    (home-page "https://github.com/haskell-pkg-janitors/X11")
-    (synopsis "Bindings to the X11 graphics library")
-    (description
-     "This package provides Haskell bindings to the X11 graphics library.  The
-bindings are a direct translation of the C bindings.")
-    (license license:bsd-3)))
-
-(define-public ghc-x11-xft
-  (package
-    (name "ghc-x11-xft")
-    (version "0.3.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/X11-xft/"
-                           "X11-xft-" version ".tar.gz"))
-       (sha256
-        (base32 "1lgqb0s2qfwwgbvwxhjbi23rbwamzdi0l0slfr20c3jpcbp3zfjf"))))
-    (inputs
-     `(("ghc-x11" ,ghc-x11)
-       ("ghc-utf8-string" ,ghc-utf8-string)
-       ("libx11" ,libx11)
-       ("libxft" ,libxft)
-       ("xorgproto" ,xorgproto)))
-    (native-inputs
-     `(("pkg-config" ,pkg-config)))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/X11-xft")
-    (synopsis "Bindings to Xft")
-    (description
-     "Bindings to the Xft, X Free Type interface library, and some Xrender
-parts.")
-    (license license:lgpl2.1)))
-
-(define-public ghc-stringbuilder
-  (package
-    (name "ghc-stringbuilder")
-    (version "0.5.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/stringbuilder/stringbuilder-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1fh3csx1wcssn8xyvl4ip4aprh9l4qyz2kk8mgjvqvc0vb2bsy6q"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f)) ; FIXME: circular dependencies with tests
-                               ; enabled
-    (home-page "https://hackage.haskell.org/package/stringbuilder")
-    (synopsis "Writer monad for multi-line string literals")
-    (description "This package provides a writer monad for multi-line string
-literals.")
-    (license license:expat)))
-
-(define-public ghc-zlib
-  (package
-    (name "ghc-zlib")
-    (version "0.6.2")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/zlib/zlib-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1vbzf0awb6zb456xf48za1kl22018646cfzq4frvxgb9ay97vk0d"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'strip-test-framework-constraints
-           (lambda _
-             (substitute* "zlib.cabal"
-               (("tasty            >= 0\\.8 && < 0\\.12") "tasty")
-               (("tasty-hunit      >= 0\\.8 && < 0\\.10") "tasty-hunit")
-               (("tasty-quickcheck == 0\\.8\\.\\*") "tasty-quickcheck")))))))
-    (inputs `(("zlib" ,zlib)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
-    (home-page "https://hackage.haskell.org/package/zlib")
-    (synopsis
-     "Compression and decompression in the gzip and zlib formats")
-    (description
-     "This package provides a pure interface for compressing and decompressing
-streams of data represented as lazy @code{ByteString}s.  It uses the zlib C
-library so it has high performance.  It supports the @code{zlib}, @code{gzip}
-and @code{raw} compression formats.  It provides a convenient high level API
-suitable for most tasks and for the few cases where more control is needed it
-provides access to the full zlib feature set.")
-    (license license:bsd-3)))
-
-(define-public ghc-parallel
-  (package
-    (name "ghc-parallel")
-    (version "3.2.2.0")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/parallel/parallel-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1xkfi96w6yfpppd0nw1rnszdxmvifwzm699ilv6332ra3akm610p"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/parallel")
-    (synopsis "Parallel programming library")
-    (description
-     "This package provides a library for parallel programming.")
-    (license license:bsd-3)))
-
-(define-public ghc-safesemaphore
-  (package
-    (name "ghc-safesemaphore")
-    (version "0.10.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "SafeSemaphore/SafeSemaphore-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0rpg9j6fy70i0b9dkrip9d6wim0nac0snp7qzbhykjkqlcvvgr91"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)))
-    (home-page "https://github.com/ChrisKuklewicz/SafeSemaphore")
-    (synopsis "Exception safe semaphores")
-    (description "This library provides exception safe semaphores that can be
-used in place of @code{QSem}, @code{QSemN}, and @code{SampleVar}, all of which
-are not exception safe and can be broken by @code{killThread}.")
-    (license license:bsd-3)))
-
-(define-public ghc-text-binary
-  (package
-    (name "ghc-text-binary")
-    (version "0.2.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "text-binary/text-binary-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "18gl10pwg3qwsk0za3c70j4n6a9129wwf1b7d3a461h816yv55xn"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/kawu/text-binary")
-    (synopsis "Binary instances for text types")
-    (description
-     "This package provides a compatibility layer providing @code{Binary}
-instances for strict and lazy text types for versions older than 1.2.1 of the
-text package.")
-    (license license:bsd-2)))
-
-(define-public ghc-strict
-  (package
-    (name "ghc-strict")
-    (version "0.3.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/strict/strict-"
-                           version ".tar.gz"))
-       (sha256
-        (base32 "08cjajqz9h47fkq98mlf3rc8n5ghbmnmgn8pfsl3bdldjdkmmlrc"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/strict")
-    (synopsis "Strict data types and String IO")
-    (description
-     "This package provides strict versions of some standard Haskell data
-types, such as pairs, @code{Maybe} and @code{Either}.  It also contains strict
-IO operations.")
-    (license license:bsd-3)))
-
-(define-public ghc-hashable
-  (package
-    (name "ghc-hashable")
-    (version "1.2.7.0")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/hashable/hashable-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1gra8gq3kb7b2sd845h55yxlrfqx3ii004c6vjhga8v0b30fzdgc"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-random" ,ghc-random)))
-    (native-inputs
-     `(("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/tibbe/hashable")
-    (synopsis "Class for types that can be converted to a hash value")
-    (description
-     "This package defines a class, @code{Hashable}, for types that can be
-converted to a hash value.  This class exists for the benefit of hashing-based
-data structures.  The package provides instances for basic types and a way to
-combine hash values.")
-    (license license:bsd-3)))
-
-(define-public ghc-hashable-bootstrap
-  (package
-    (inherit ghc-hashable)
-    (name "ghc-hashable-bootstrap")
-    (arguments `(#:tests? #f))
-    (native-inputs '())
-    (properties '((hidden? #t)))))
-
-(define-public ghc-hashable-time
-  (package
-    (name "ghc-hashable-time")
-    (version "0.2.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/hashable-time/hashable-time-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0k932nyd08l3xxbh2g3n76py2f4kd9yw4s5a065vjz0xp6wjnxdm"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("1" "0rv40xkg3gj8jnqsry1gq3f5s5la6d5arg8fzkirnwdpcgha1as6")))
-    (inputs `(("ghc-hashable" ,ghc-hashable)))
-    (home-page "http://hackage.haskell.org/package/hashable-time")
-    (synopsis "Hashable instances for Data.Time")
-    (description
-     "This package provides @code{Hashable} instances for types in
-@code{Data.Time}.")
-    (license license:bsd-3)))
-
-(define-public ghc-data-hash
-  (package
-    (name "ghc-data-hash")
-    (version "0.2.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/data-hash"
-                           "/data-hash-" version ".tar.gz"))
-       (sha256
-        (base32 "1ghbqvc48gf9p8wiy71hdpaj7by3b9cw6wgwi3qqz8iw054xs5wi"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://hackage.haskell.org/package/data-hash")
-    (synopsis "Combinators for building fast hashing functions")
-    (description
-     "This package provides combinators for building fast hashing functions.
-It includes hashing functions for all basic Haskell98 types.")
-    (license license:bsd-3)))
-
-(define-public ghc-murmur-hash
-  (package
-    (name "ghc-murmur-hash")
-    (version "0.1.0.9")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/murmur-hash"
-                           "/murmur-hash-" version ".tar.gz"))
-       (sha256
-        (base32 "1bb58kfnzvx3mpc0rc0dhqc1fk36nm8prd6gvf20gk6lxaadpfc9"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/nominolo/murmur-hash")
-    (synopsis "MurmurHash2 implementation for Haskell")
-    (description
-     "This package provides an implementation of MurmurHash2, a good, fast,
-general-purpose, non-cryptographic hashing function.  See
-@url{https://sites.google.com/site/murmurhash/} for details.  This
-implementation is pure Haskell, so it might be a bit slower than a C FFI
-binding.")
-    (license license:bsd-3)))
-
-(define-public ghc-random
-  (package
-    (name "ghc-random")
-    (version "1.1")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/random/random-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32 "0nis3lbkp8vfx8pkr6v7b7kr5m334bzb0fk9vxqklnp2aw8a865p"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/random")
-    (synopsis "Random number library")
-    (description "This package provides a basic random number generation
-library, including the ability to split random number generators.")
-    (license license:bsd-3)))
-
-(define-public ghc-primitive
-  (package
-    (name "ghc-primitive")
-    (version "0.6.4.0")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/primitive/primitive-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0r0cda7acvplgwaxy69kviv4jp7kkfi038by68gj4yfx4iwszgjc"))))
-    (build-system haskell-build-system)
-    (home-page
-     "https://github.com/haskell/primitive")
-    (synopsis "Primitive memory-related operations")
-    (description
-     "This package provides various primitive memory-related operations.")
-    (license license:bsd-3)))
-
-(define-public ghc-tf-random
-  (package
-    (name "ghc-tf-random")
-    (version "0.5")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/tf-random/tf-random-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32 "0445r2nns6009fmq0xbfpyv7jpzwv0snccjdg7hwj4xk4z0cwc1f"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-primitive" ,ghc-primitive)
-       ("ghc-random" ,ghc-random)))
-    (home-page "https://hackage.haskell.org/package/tf-random")
-    (synopsis "High-quality splittable pseudorandom number generator")
-    (description "This package contains an implementation of a high-quality
-splittable pseudorandom number generator.  The generator is based on a
-cryptographic hash function built on top of the ThreeFish block cipher.  See
-the paper \"Splittable Pseudorandom Number Generators Using Cryptographic
-Hashing\" by Claessen, Pałka for details and the rationale of the design.")
-    (license license:bsd-3)))
-
-(define-public ghc-transformers-base
-  (package
-    (name "ghc-transformers-base")
-    (version "0.4.5.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/transformers-base/transformers-base-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1s256bi0yh0x2hp2gwd30f3mg1cv53zz397dv1yhfsnfzmihrj6h"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (home-page
-     "https://hackage.haskell.org/package/transformers-compat")
-    (synopsis
-     "Backported transformer library")
-    (description
-     "Backported versions of types that were added to transformers in
-transformers 0.3 and 0.4 for users who need strict transformers 0.2 or 0.3
-compatibility to run on old versions of the platform.")
-    (license license:bsd-3)))
-
-(define-public ghc-transformers-compat
-  (package
-    (name "ghc-transformers-compat")
-    (version "0.6.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/transformers-compat"
-             "/transformers-compat-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1gp4a8kvniwgm8947ghb4iwv4b7wd6ry4kvv4nfnym4agf5j41nw"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/ekmett/transformers-compat/")
-    (synopsis "Small compatibility shim between transformers 0.3 and 0.4")
-    (description "This package includes backported versions of types that were
-added to transformers in transformers 0.3 and 0.4 for users who need strict
-transformers 0.2 or 0.3 compatibility to run on old versions of the platform,
-but also need those types.")
-    (license license:bsd-3)))
-
-(define-public ghc-unix-time
-  (package
-    (name "ghc-unix-time")
-    (version "0.3.8")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/unix-time/unix-time-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "051slgpid5cxiaw203ky0ql3823h28fcjs08axkzd4265wrvv8fw"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:tests? #f)) ; FIXME: Test fails with "System.Time not found".  This
-                     ; is weird, that should be provided by GHC 7.10.2.
-    (inputs
-     `(("ghc-old-time" ,ghc-old-time)
-       ("ghc-old-locale" ,ghc-old-locale)))
-    (home-page "https://hackage.haskell.org/package/unix-time")
-    (synopsis "Unix time parser/formatter and utilities")
-    (description "This library provides fast parsing and formatting utilities
-for Unix time in Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-unix-compat
-  (package
-    (name "ghc-unix-compat")
-    (version "0.5.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/unix-compat/unix-compat-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0llwl7rp63fy2ychwdclz1afj45pbin5pfl01dvn6rwhvmwhr7d3"))))
-    (build-system haskell-build-system)
-    (home-page
-     "https://github.com/jystic/unix-compat")
-    (synopsis "Portable POSIX-compatibility layer")
-    (description
-     "This package provides portable implementations of parts of the unix
-package.  This package re-exports the unix package when available.  When it
-isn't available, portable implementations are used.")
-    (license license:bsd-3)))
-
-(define-public ghc-indents
-  (package
-    (name "ghc-indents")
-    (version "0.5.0.0")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://hackage.haskell.org/package/indents/indents-"
-                    version ".tar.gz"))
-              (sha256
-               (base32
-                "1ly3v41jacc6lrsvg4j3m5a6zs90gr8dyif5m6bf34hj1k5cgg0n"))))
-    (build-system haskell-build-system)
-    ;; This package needs an older version of tasty.
-    (arguments '(#:tests? #f))
-    (inputs
-     `(("ghc-concatenative" ,ghc-concatenative)))
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
-    (home-page "http://patch-tag.com/r/salazar/indents")
-    (synopsis "Indentation sensitive parser-combinators for parsec")
-    (description
-     "This library provides functions for use in parsing indentation sensitive
-contexts.  It parses blocks of lines all indented to the same level as well as
-lines continued at an indented level below.")
-    (license license:bsd-3)))
-
-(define-public ghc-iproute
-  (package
-    (name "ghc-iproute")
-    (version "1.7.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/iproute/iproute-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1vw1nm3s8vz1hqnjnqd3wh5rr4q3m2r4izn5ynhf93h9185qwqzd"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f)) ; FIXME: Tests cannot find System.ByteOrder,
-                               ; exported by ghc-byteorder.  Doctest issue.
-    (inputs
-     `(("ghc-appar" ,ghc-appar)
-       ("ghc-byteorder" ,ghc-byteorder)
-       ("ghc-network" ,ghc-network)
-       ("ghc-safe" ,ghc-safe)))
-    (home-page "https://www.mew.org/~kazu/proj/iproute/")
-    (synopsis "IP routing table")
-    (description "IP Routing Table is a tree of IP ranges to search one of
-them on the longest match base.  It is a kind of TRIE with one way branching
-removed.  Both IPv4 and IPv6 are supported.")
-    (license license:bsd-3)))
-
-(define-public ghc-iwlib
-  (package
-    (name "ghc-iwlib")
-    (version "0.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/iwlib/iwlib-"
-                           version ".tar.gz"))
-       (sha256
-        (base32 "0khmfwql4vwj55idsxmhjhrbqzfir3g9wm5lmpvnf77mm95cfpdz"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("wireless-tools" ,wireless-tools)))
-    (home-page "https://github.com/jaor/iwlib")
-    (synopsis "Haskell binding to the iw wireless networking library")
-    (description
-     "IWlib is a thin Haskell binding to the iw C library.  It provides
-information about the current wireless network connections, and adapters on
-supported systems.")
-    (license license:bsd-3)))
-
-(define-public ghc-regex-base
-  (package
-    (name "ghc-regex-base")
-    (version "0.93.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/regex-base/regex-base-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0y1j4h2pg12c853nzmczs263di7xkkmlnsq5dlp5wgbgl49mgp10"))))
-    (build-system haskell-build-system)
-    (home-page
-     "https://sourceforge.net/projects/lazy-regex")
-    (synopsis "Replaces/Enhances Text.Regex")
-    (description "@code{Text.Regex.Base} provides the interface API for
-regex-posix, regex-pcre, regex-parsec, regex-tdfa, regex-dfa.")
-    (license license:bsd-3)))
-
-(define-public ghc-regex-posix
-  (package
-    (name "ghc-regex-posix")
-    (version "0.95.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/regex-posix/regex-posix-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0gkhzhj8nvfn1ija31c7xnl6p0gadwii9ihyp219ck2arlhrj0an"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-regex-base" ,ghc-regex-base)))
-    (home-page "https://sourceforge.net/projects/lazy-regex")
-    (synopsis "POSIX regular expressions for Haskell")
-    (description "This library provides the POSIX regex backend used by the
-Haskell library @code{regex-base}.")
-    (license license:bsd-3)))
-
-(define-public ghc-regex-compat
-  (package
-    (name "ghc-regex-compat")
-    (version "0.95.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/regex-compat/regex-compat-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0fwmima3f04p9y4h3c23493n1xj629ia2dxaisqm6rynljjv2z6m"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-regex-base" ,ghc-regex-base)
-       ("ghc-regex-posix" ,ghc-regex-posix)))
-    (home-page "https://sourceforge.net/projects/lazy-regex")
-    (synopsis "Replaces/Enhances Text.Regex")
-    (description "This library provides one module layer over
-@code{regex-posix} to replace @code{Text.Regex}.")
-    (license license:bsd-3)))
-
-(define-public ghc-regex-tdfa-text
-  (package
-    (name "ghc-regex-tdfa-text")
-    (version "1.0.0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/regex-tdfa-text/"
-             "regex-tdfa-text-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0090g6lgbdm9lywpqm2d3724nnnh24nx3vnlqr96qc2w486pmmrq"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-regex-base" ,ghc-regex-base)
-       ("ghc-regex-tdfa" ,ghc-regex-tdfa)))
-    (home-page
-     "http://hackage.haskell.org/package/regex-tdfa-text")
-    (synopsis "Text interface for regex-tdfa")
-    (description
-     "This provides an extra text interface for regex-tdfa.")
-    (license license:bsd-3)))
-
-(define-public ghc-regex
-  (package
-    (name "ghc-regex")
-    (version "1.0.1.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/regex/"
-                           "regex-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1sjkpkgv4phy5b5v2lr89x4vx4dh44pj0sbvlsp6n86w9v6v4jwb"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'relax-dependencies
-           (lambda _
-             (substitute* "regex.cabal"
-               (("base-compat.*>=.*0.6.*")
-                "base-compat >= 0.6\n")
-               (("template-haskell.*>=.*2.7.*")
-                "template-haskell >= 2.7\n"))
-             #t)))))
-    (inputs
-     `(("ghc-base-compat" ,ghc-base-compat)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-regex-base" ,ghc-regex-base)
-       ("ghc-regex-pcre-builtin" ,ghc-regex-pcre-builtin)
-       ("ghc-regex-tdfa" ,ghc-regex-tdfa)
-       ("ghc-regex-tdfa-text" ,ghc-regex-tdfa-text)
-       ("ghc-time-locale-compat" ,ghc-time-locale-compat)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-utf8-string" ,ghc-utf8-string)))
-    (home-page "http://regex.uk")
-    (synopsis "Toolkit for regex-base")
-    (description
-     "This package provides a regular expression toolkit for @code{regex-base}
-with compile-time checking of regular expression syntax, data types for
-matches and captures, a text replacement toolkit, portable options, high-level
-AWK-like tools for building text processing apps, regular expression macros
-with parsers and test bench, comprehensive documentation, tutorials and
-copious examples.")
-    (license license:bsd-3)))
-
-(define-public ghc-parsers
-  (package
-    (name "ghc-parsers")
-    (version "0.12.9")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/parsers/parsers-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1r05sc1mcglk8w596kq9a1brfn9c2vll8lq16j07ln0vsz4jzrc1"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f)) ; FIXME: Test fails with "cannot satisfy
-                               ; -package attoparsec-0.13.0.1"
-    (inputs
-     `(("ghc-base-orphans" ,ghc-base-orphans)
-       ("ghc-attoparsec" ,ghc-attoparsec)
-       ("ghc-scientific" ,ghc-scientific)
-       ("ghc-charset" ,ghc-charset)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)))
-    (home-page "https://github.com/ekmett/parsers/")
-    (synopsis "Parsing combinators")
-    (description "This library provides convenient combinators for working
-with and building parsing combinator libraries.  Given a few simple instances,
-you get access to a large number of canned definitions.  Instances exist for
-the parsers provided by @code{parsec}, @code{attoparsec} and @code{base}'s
-@code{Text.Read}.")
-    (license license:bsd-3)))
-
-(define-public ghc-trifecta
-  (package
-    (name "ghc-trifecta")
-    (version "2")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://hackage.haskell.org/package/trifecta/"
-                    "trifecta-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0hznd8i65s81xy13i2qc7cvipw3lfb2yhkv53apbdsh6sbljz5sk"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f)) ; doctest suite fails to build on i686
-    (inputs
-     `(("ghc-reducers" ,ghc-reducers)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-ansi-wl-pprint" ,ghc-ansi-wl-pprint)
-       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
-       ("ghc-blaze-builder" ,ghc-blaze-builder)
-       ("ghc-blaze-html" ,ghc-blaze-html)
-       ("ghc-blaze-markup" ,ghc-blaze-markup)
-       ("ghc-charset" ,ghc-charset)
-       ("ghc-comonad" ,ghc-comonad)
-       ("ghc-fingertree" ,ghc-fingertree)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-lens" ,ghc-lens)
-       ("ghc-parsers" ,ghc-parsers)
-       ("ghc-profunctors" ,ghc-profunctors)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-utf8-string" ,ghc-utf8-string)))
-    (native-inputs
-     `(("cabal-doctest" ,cabal-doctest)
-       ("ghc-doctest" ,ghc-doctest)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/ekmett/trifecta/")
-    (synopsis "Parser combinator library with convenient diagnostics")
-    (description "Trifecta is a modern parser combinator library for Haskell,
-with slicing and Clang-style colored diagnostics.")
-    (license license:bsd-3)))
-
-(define-public ghc-time-locale-compat
-  (package
-    (name "ghc-time-locale-compat")
-    (version "0.1.1.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "time-locale-compat/time-locale-compat-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0b2hmj8wwrfkndwzgm11qr496ca2ahwdxcj3m0ii91bxvrk1bzq7"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-old-locale" ,ghc-old-locale)))
-    (home-page "https://github.com/khibino/haskell-time-locale-compat")
-    (synopsis "Compatibility of TimeLocale between old-locale and time-1.5")
-    (description "This package contains a wrapped name module for
-@code{TimeLocale}.")
-    (license license:bsd-3)))
-
-(define-public ghc-attoparsec
-  (package
-    (name "ghc-attoparsec")
-    (version "0.13.2.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/attoparsec/attoparsec-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0j6qcwd146yzlkc9mcvzvnixsyl65n2a68l28322q5v9p4g4g4yx"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'patch-for-newer-quickcheck
-           (lambda _
-             (substitute* "attoparsec.cabal"
-               (("QuickCheck >= 2\\.7 && < 2\\.10")
-                "QuickCheck >= 2.7 && < 2.12"))
-             ;; This test fails because of the newer QuickCheck:
-             ;; <https://github.com/bos/attoparsec/issues/134>.
-             (substitute* "tests/QC/ByteString.hs"
-               ((", testProperty \"satisfyWith\" satisfyWith")
-                "")))))))
-    (inputs
-     `(("ghc-scientific" ,ghc-scientific)))
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-quickcheck-unicode" ,ghc-quickcheck-unicode)
-       ("ghc-vector" ,ghc-vector)))
-    (home-page "https://github.com/bos/attoparsec")
-    (synopsis "Fast combinator parsing for bytestrings and text")
-    (description "This library provides a fast parser combinator library,
-aimed particularly at dealing efficiently with network protocols and
-complicated text/binary file formats.")
-    (license license:bsd-3)))
-
-(define-public ghc-attoparsec-bootstrap
-  (package
-    (inherit ghc-attoparsec)
-    (name "ghc-attoparsec-bootstrap")
-    (arguments `(#:tests? #f))
-    (inputs
-     `(("ghc-scientific" ,ghc-scientific-bootstrap)))
-    (native-inputs '())
-    (properties '(hidden? #t))))
-
-(define-public ghc-zip-archive
-  (package
-    (name "ghc-zip-archive")
-    (version "0.3.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/zip-archive/zip-archive-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0kf8xyac168bng8a0za2jwrbss7a4ralvci9g54hnvl0gkkxx2lq"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-digest" ,ghc-digest)
-       ("ghc-temporary" ,ghc-temporary)
-       ("ghc-zlib" ,ghc-zlib)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("unzip" ,unzip)))
-    (home-page "https://hackage.haskell.org/package/zip-archive")
-    (synopsis "Zip archive library for Haskell")
-    (description "The zip-archive library provides functions for creating,
-modifying, and extracting files from zip archives in Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-distributive
-  (package
-    (name "ghc-distributive")
-    (version "0.5.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/distributive/distributive-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0y566r97sfyvhsmd4yxiz4ns2mqgwf5bdbp56wgxl6wlkidq0wwi"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("6" "06bd38rf31yrvvy989r44pm0id3dsxwcp6nxg7wk6ccj3n2b8rzk")))
-    (inputs
-     `(("ghc-tagged" ,ghc-tagged)
-       ("ghc-base-orphans" ,ghc-base-orphans)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-generic-deriving" ,ghc-generic-deriving)))
-    (native-inputs
-     `(("cabal-doctest" ,cabal-doctest)
-       ("ghc-doctest" ,ghc-doctest)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/ekmett/distributive/")
-    (synopsis "Distributive functors for Haskell")
-    (description "This package provides distributive functors for Haskell.
-Dual to @code{Traversable}.")
-    (license license:bsd-3)))
-
-(define-public ghc-cereal
-  (package
-    (name "ghc-cereal")
-    (version "0.5.7.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/cereal/cereal-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1j7imh2mzqcljld7sx0av69699955rpy3hzivi5723i6a9nszgbs"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-fail" ,ghc-fail)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://hackage.haskell.org/package/cereal")
-    (synopsis "Binary serialization library")
-    (description "This package provides a binary serialization library,
-similar to @code{binary}, that introduces an @code{isolate} primitive for
-parser isolation, and labeled blocks for better error messages.")
-    (license license:bsd-3)))
-
-(define-public ghc-comonad
-  (package
-    (name "ghc-comonad")
-    (version "5.0.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/comonad/comonad-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "09g870c4flp4k3fgbibsd0mmfjani1qcpbcl685v8x89kxzrva3q"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("cabal-doctest" ,cabal-doctest)
-       ("ghc-doctest" ,ghc-doctest)))
-    (inputs
-     `(("ghc-contravariant" ,ghc-contravariant)
-       ("ghc-distributive" ,ghc-distributive)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (home-page "https://github.com/ekmett/comonad/")
-    (synopsis "Comonads for Haskell")
-    (description "This library provides @code{Comonad}s for Haskell.")
-    (license license:bsd-3)))
-
-(define-public hscolour
-  (package
-    (name "hscolour")
-    (version "1.24.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/hscolour/hscolour-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "079jwph4bwllfp03yfr26s5zc6m6kw3nhb1cggrifh99haq34cr4"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/hscolour")
-    (synopsis "Script to colourise Haskell code")
-    (description "HSColour is a small Haskell script to colourise Haskell
-code.  It currently has six output formats: ANSI terminal codes (optionally
-XTerm-256colour codes), HTML 3.2 with font tags, HTML 4.01 with CSS, HTML 4.01
-with CSS and mouseover annotations, XHTML 1.0 with inline CSS styling, LaTeX,
-and mIRC chat codes.")
-    (license license:bsd-3)))
-
-(define-public ghc-polyparse
-  (package
-    (name "ghc-polyparse")
-    (version "1.12")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/polyparse/polyparse-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "05dya1vdvq29hkhkdlsglzhw7bdn51rvs1javs0q75nf99c66k7m"))))
-    (build-system haskell-build-system)
-    (home-page
-     "http://code.haskell.org/~malcolm/polyparse/")
-    (synopsis
-     "Alternative parser combinator libraries")
-    (description
-     "This package provides a variety of alternative parser combinator
-libraries, including the original HuttonMeijer set.  The Poly sets have
-features like good error reporting, arbitrary token type, running state, lazy
-parsing, and so on.  Finally, Text.Parse is a proposed replacement for the
-standard Read class, for better deserialisation of Haskell values from
-Strings.")
-    (license license:lgpl2.1)))
-
-(define-public ghc-extra
-  (package
-    (name "ghc-extra")
-    (version "1.6.9")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/extra/extra-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0xxcpb00pgwi9cmy6a7ghh6rblxry42p8pz5ssfgj20fs1xwzj1b"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-clock" ,ghc-clock)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/ndmitchell/extra")
-    (synopsis "Extra Haskell functions")
-    (description "This library provides extra functions for the standard
-Haskell libraries.  Most functions are simple additions, filling out missing
-functionality.  A few functions are available in later versions of GHC, but
-this package makes them available back to GHC 7.2.")
-    (license license:bsd-3)))
-
-(define-public ghc-profunctors
-  (package
-    (name "ghc-profunctors")
-    (version "5.2.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/profunctors/profunctors-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0s1pwjidbn761xk43pmzyvn99hm3psdifjd78ylki7f97aiyd0g9"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("2" "1ywlg9z8nlhd2avgb8c6gbkv8zyk7hvc25926bafyg0m0k8y1amq")))
-    (inputs
-     `(("ghc-base-orphans" ,ghc-base-orphans)
-       ("ghc-bifunctors" ,ghc-bifunctors)
-       ("ghc-comonad" ,ghc-comonad)
-       ("ghc-contravariant" ,ghc-contravariant)
-       ("ghc-distributive" ,ghc-distributive)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-tagged" ,ghc-tagged)))
-    (home-page "https://github.com/ekmett/profunctors/")
-    (synopsis "Profunctors for Haskell")
-    (description "This library provides profunctors for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-reducers
-  (package
-    (name "ghc-reducers")
-    (version "3.12.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/reducers/reducers-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "09wf8pl9ycglcv6qj5ba26gkg2s5iy81hsx9xp0q8na0cwvp71ki"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-fingertree" ,ghc-fingertree)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-semigroupoids" ,ghc-semigroupoids)
-       ("ghc-semigroups" ,ghc-semigroups)))
-    (home-page "https://github.com/ekmett/reducers/")
-    (synopsis "Semigroups, specialized containers and a general map/reduce framework")
-    (description "This library provides various semigroups, specialized
-containers and a general map/reduce framework for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-appar
-  (package
-    (name "ghc-appar")
-    (version "0.1.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/appar/appar-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "09jb9ij78fdkz2qk66rw99q19qnm504dpv0yq0pjsl6xwjmndsjq"))))
-    (build-system haskell-build-system)
-    (home-page
-     "https://hackage.haskell.org/package/appar")
-    (synopsis "Simple applicative parser")
-    (description "This package provides a simple applicative parser in Parsec
-style.")
-    (license license:bsd-3)))
-
-(define-public ghc-safe
-  (package
-    (name "ghc-safe")
-    (version "0.3.17")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/safe/safe-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0p3yaf5slvyz1cyy51jq64c5rlp8yzwim8iy2dlnk42if4gc9ibr"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/ndmitchell/safe#readme")
-    (synopsis "Library of safe (exception free) functions")
-    (description "This library provides wrappers around @code{Prelude} and
-@code{Data.List} functions, such as @code{head} and @code{!!}, that can throw
-exceptions.")
-    (license license:bsd-3)))
-
-(define-public ghc-generic-deriving
-  (package
-    (name "ghc-generic-deriving")
-    (version "1.12.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/generic-deriving/generic-deriving-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1i7d6cpj9yhaqb79zays3nqchhaacacjz9bkc0zlwj73y5gvi22n"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-th-abstraction" ,ghc-th-abstraction)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://hackage.haskell.org/package/generic-deriving")
-    (synopsis "Generalise the deriving mechanism to arbitrary classes")
-    (description "This package provides functionality for generalising the
-deriving mechanism in Haskell to arbitrary classes.")
-    (license license:bsd-3)))
-
-(define-public ghc-pcre-light
-  (package
-    (name "ghc-pcre-light")
-    (version "0.4.0.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/pcre-light/pcre-light-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0xcyi1fivwg7a92mch5bcqzmrfxzqj42rmb3m8kgs61x4qwpxj82"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("pcre" ,pcre)))
-    (native-inputs
-     `(("pkg-config" ,pkg-config)))
-    (home-page "https://github.com/Daniel-Diaz/pcre-light")
-    (synopsis "Haskell library for Perl 5 compatible regular expressions")
-    (description "This package provides a small, efficient, and portable regex
-library for Perl 5 compatible regular expressions.  The PCRE library is a set
-of functions that implement regular expression pattern matching using the same
-syntax and semantics as Perl 5.")
-    (license license:bsd-3)))
-
-(define-public ghc-logict
-  (package
-    (name "ghc-logict")
-    (version "0.6.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/logict/logict-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "07hnirv6snnym2r7iijlfz00b60jpy2856zvqxh989q0in7bd0hi"))))
-    (build-system haskell-build-system)
-    (home-page "http://code.haskell.org/~dolio/")
-    (synopsis "Backtracking logic-programming monad")
-    (description "This library provides a continuation-based, backtracking,
-logic programming monad.  An adaptation of the two-continuation implementation
-found in the paper \"Backtracking, Interleaving, and Terminating Monad
-Transformers\" available @uref{http://okmij.org/ftp/papers/LogicT.pdf,
-online}.")
-    (license license:bsd-3)))
-
-(define-public ghc-xml
-  (package
-    (name "ghc-xml")
-    (version "1.3.14")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/xml/xml-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0g814lj7vaxvib2g3r734221k80k7ap9czv9hinifn8syals3l9j"))))
-    (build-system haskell-build-system)
-    (home-page "http://code.galois.com")
-    (synopsis "Simple XML library for Haskell")
-    (description "This package provides a simple XML library for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-feed
-  (package
-    (name "ghc-feed")
-    (version "1.0.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "feed/feed-" version ".tar.gz"))
-       (sha256
-        (base32
-         "05rgg7x1984mgfhkmz792xj8lhwjgznixhygzr8blf517lns2nck"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("4" "0baavcavm3ywykcr9cm07aqr7sna98jba2n68lyn3kany8ri214d")))
-    (inputs
-     `(("ghc-base-compat" ,ghc-base-compat)
-       ("ghc-old-locale" ,ghc-old-locale)
-       ("ghc-old-time" ,ghc-old-time)
-       ("ghc-safe" ,ghc-safe)
-       ("ghc-time-locale-compat" ,ghc-time-locale-compat)
-       ("ghc-utf8-string" ,ghc-utf8-string)
-       ("ghc-xml-conduit" ,ghc-xml-conduit)
-       ("ghc-xml-types" ,ghc-xml-types)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
-    (home-page "https://github.com/bergmark/feed")
-    (synopsis "Haskell package for handling various syndication formats")
-    (description "This Haskell package includes tools for generating and
-consuming feeds in both RSS (Really Simple Syndication) and Atom format.")
-    (license license:bsd-3)))
-
-(define-public ghc-exceptions
-  (package
-    (name "ghc-exceptions")
-    (version "0.10.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/exceptions/exceptions-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1ms9zansv0pwzwdjncvx4kf18lnkjy2p61hvjhvxmjx5bqp93p8y"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (inputs
-     `(("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (home-page "https://github.com/ekmett/exceptions/")
-    (synopsis "Extensible optionally-pure exceptions")
-    (description "This library provides extensible optionally-pure exceptions
-for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-temporary
-  (package
-    (name "ghc-temporary")
-    (version "1.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/temporary/temporary-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "144qhwfwg37l3k313raf4ssiz16jbgwlm1nf4flgqpsbd69jji4c"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-random" ,ghc-random)))
-    (native-inputs
-     `(("ghc-base-compat" ,ghc-base-compat)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
-    (home-page "https://www.github.com/batterseapower/temporary")
-    (synopsis "Temporary file and directory support")
-    (description "The functions for creating temporary files and directories
-in the Haskelll base library are quite limited.  This library just repackages
-the Cabal implementations of its own temporary file and folder functions so
-that you can use them without linking against Cabal or depending on it being
-installed.")
-    (license license:bsd-3)))
-
-(define-public ghc-temporary-rc
-  (package
-    (name "ghc-temporary-rc")
-    (version "1.2.0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/temporary-rc/temporary-rc-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1nqih0qks439k3pr5kmbbc8rjdw730slrxlflqb27fbxbzb8skqs"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-exceptions" ,ghc-exceptions)))
-    (home-page
-     "https://www.github.com/feuerbach/temporary")
-    (synopsis
-     "Portable temporary file and directory support")
-    (description
-     "The functions for creating temporary files and directories in the base
-library are quite limited.  The unixutils package contains some good ones, but
-they aren't portable to Windows.  This library just repackages the Cabal
-implementations of its own temporary file and folder functions so that you can
-use them without linking against Cabal or depending on it being installed.
-This is a better maintained fork of the \"temporary\" package.")
-    (license license:bsd-3)))
-
-(define-public ghc-smallcheck
-  (package
-    (name "ghc-smallcheck")
-    (version "1.1.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/smallcheck/smallcheck-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "195fj7w3v03d1y1nm2ylavzrwxjcdbq0lb6zsw1dwyx5jmwfc84h"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-logict" ,ghc-logict)))
-    (home-page
-     "https://github.com/feuerbach/smallcheck")
-    (synopsis "Property-based testing library")
-    (description "SmallCheck is a testing library that allows to verify
-properties for all test cases up to some depth.  The test cases are generated
-automatically by SmallCheck.")
-    (license license:bsd-3)))
-
-(define-public ghc-silently
-  (package
-    (name "ghc-silently")
-    (version "1.2.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/silently/silently-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0f9qm3f7y0hpxn6mddhhg51mm1r134qkvd2kr8r6192ka1ijbxnf"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f)) ;; circular dependency with nanospec
-    ;; (inputs
-    ;;  `(("ghc-temporary" ,ghc-temporary)))
-    (home-page "https://github.com/hspec/silently")
-    (synopsis "Prevent writing to stdout")
-    (description "This package provides functions to prevent or capture
-writing to stdout and other handles.")
-    (license license:bsd-3)))
-
-(define-public ghc-case-insensitive
-  (package
-    (name "ghc-case-insensitive")
-    (version "1.2.0.11")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/case-insensitive/case-insensitive-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1qrpxfirsxckg7jv28f5ah2qc8lh95hp7rnqkbqs1ahcwlbnvkm7"))))
-    (build-system haskell-build-system)
-    ;; these inputs are necessary to use this library
-    (inputs
-     `(("ghc-hashable" ,ghc-hashable)))
-    (arguments
-     `(#:tests? #f)) ; FIXME: currently missing libraries used for tests.
-    (home-page
-     "https://github.com/basvandijk/case-insensitive")
-    (synopsis "Case insensitive string comparison")
-    (description
-     "The module @code{Data.CaseInsensitive} provides the @code{CI} type
-constructor which can be parameterised by a string-like type like:
-@code{String}, @code{ByteString}, @code{Text}, etc.  Comparisons of values of
-the resulting type will be insensitive to cases.")
-    (license license:bsd-3)))
-
-(define-public ghc-syb
-  (package
-    (name "ghc-syb")
-    (version "0.7")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/syb/syb-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1da2zz7gqm4xbkx5vpd74dayx1svaxyl145fl14mq15lbb77sxdq"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-hunit" ,ghc-hunit)))
-    (home-page
-     "http://www.cs.uu.nl/wiki/GenericProgramming/SYB")
-    (synopsis "Scrap Your Boilerplate")
-    (description "This package contains the generics system described in the
-/Scrap Your Boilerplate/ papers (see
-@uref{http://www.cs.uu.nl/wiki/GenericProgramming/SYB, the website}).  It
-defines the @code{Data} class of types permitting folding and unfolding of
-constructor applications, instances of this class for primitive types, and a
-variety of traversals.")
-    (license license:bsd-3)))
-
-(define-public ghc-fgl
-  (package
-    (name "ghc-fgl")
-    (version "5.6.0.0")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/fgl/fgl-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1i6cp4b3w7sjk7y1dq3fh6bci2sm5h3lnbbaw9ln19nwncg2wwll"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "fgl.cabal"
-               (("QuickCheck >= 2\\.8 && < 2\\.10")
-                "QuickCheck >= 2.8 && < 2.12")
-               (("hspec >= 2\\.1 && < 2\\.5")
-                "hspec >= 2.1 && < 2.6")))))))
-    (inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://web.engr.oregonstate.edu/~erwig/fgl/haskell")
-    (synopsis
-     "Martin Erwig's Functional Graph Library")
-    (description "The functional graph library, FGL, is a collection of type
-and function definitions to address graph problems.  The basis of the library
-is an inductive definition of graphs in the style of algebraic data types that
-encourages inductive, recursive definitions of graph algorithms.")
-    (license license:bsd-3)))
-
-(define-public ghc-chasingbottoms
-  (package
-    (name "ghc-chasingbottoms")
-    (version "1.3.1.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/ChasingBottoms/"
-                           "ChasingBottoms-" version ".tar.gz"))
-       (sha256
-        (base32
-         "06cynx6hcbfpky7qq3b3mjjgwbnaxkwin3znbwq4b9ikiw0ng633"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-random" ,ghc-random)
-       ("ghc-syb" ,ghc-syb)))
-    (home-page "https://hackage.haskell.org/package/ChasingBottoms")
-    (synopsis "Testing of partial and infinite values in Haskell")
-    (description
-     ;; FIXME: There should be a @comma{} in the uref text, but it is not
-     ;; rendered properly.
-     "This is a library for testing code involving bottoms or infinite values.
-For the underlying theory and a larger example involving use of QuickCheck,
-see the article
-@uref{http://www.cse.chalmers.se/~nad/publications/danielsson-jansson-mpc2004.html,
-\"Chasing Bottoms A Case Study in Program Verification in the Presence of
-Partial and Infinite Values\"}.")
-    (license license:expat)))
-
-(define-public ghc-unordered-containers
-  (package
-    (name "ghc-unordered-containers")
-    (version "0.2.9.0")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/unordered-containers"
-             "/unordered-containers-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0l4264p0av12cc6i8gls13q8y27x12z2ar4x34n3x59y99fcnc37"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-chasingbottoms" ,ghc-chasingbottoms)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
-       ("ghc-hashable" ,ghc-hashable)))
-    (home-page
-     "https://github.com/tibbe/unordered-containers")
-    (synopsis
-     "Efficient hashing-based container types")
-    (description
-     "Efficient hashing-based container types.  The containers have been
-optimized for performance critical use, both in terms of large data quantities
-and high speed.")
-    (license license:bsd-3)))
-
-(define-public ghc-unordered-containers-bootstrap
-  (package
-    (inherit ghc-unordered-containers)
-    (name "ghc-unordered-containers-bootstrap")
-    (arguments `(#:tests? #f))
-    (inputs
-     `(("ghc-hashable" ,ghc-hashable-bootstrap)))
-    (properties '(hidden? #t))))
-
-(define-public ghc-uniplate
-  (package
-    (name "ghc-uniplate")
-    (version "1.6.12")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/uniplate/uniplate-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1dx8f9aw27fz8kw0ad1nm6355w5rdl7bjvb427v2bsgnng30pipw"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-syb" ,ghc-syb)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)))
-    (home-page "http://community.haskell.org/~ndm/uniplate/")
-    (synopsis "Simple, concise and fast generic operations")
-    (description "Uniplate is a library for writing simple and concise generic
-operations.  Uniplate has similar goals to the original Scrap Your Boilerplate
-work, but is substantially simpler and faster.")
-    (license license:bsd-3)))
-
-(define-public ghc-base64-bytestring
-  (package
-    (name "ghc-base64-bytestring")
-    (version "1.0.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/base64-bytestring/base64-bytestring-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32 "13305brzlac24pifiqd5a2z10c6k6amhpdy9cc0z5ryrkgnm8dhr"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f))         ; FIXME: testing libraries are missing.
-    (home-page "https://github.com/bos/base64-bytestring")
-    (synopsis "Base64 encoding and decoding for ByteStrings")
-    (description "This library provides fast base64 encoding and decoding for
-Haskell @code{ByteString}s.")
-    (license license:bsd-3)))
-
-(define-public ghc-annotated-wl-pprint
-  (package
-    (name "ghc-annotated-wl-pprint")
-    (version "0.7.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/annotated-wl-pprint"
-             "/annotated-wl-pprint-" version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "061xfz6qany3wf95csl8dcik2pz22cn8iv1qchhm16isw5zjs9hc"))))
-    (build-system haskell-build-system)
-    (home-page
-     "https://github.com/david-christiansen/annotated-wl-pprint")
-    (synopsis
-     "The Wadler/Leijen Pretty Printer, with annotation support")
-    (description "This is a modified version of wl-pprint, which was based on
-Wadler's paper \"A Prettier Printer\".  This version allows the library user
-to annotate the text with semantic information, which can later be rendered in
-a variety of ways.")
-    (license license:bsd-3)))
-
-(define-public ghc-wl-pprint
-  (package
-    (name "ghc-wl-pprint")
-    (version "1.2.1")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://hackage.haskell.org/package/wl-pprint/wl-pprint-"
-                    version ".tar.gz"))
-              (sha256
-               (base32
-                "0kn7y8pdrv8f87zhd5mifcl8fy3b2zvnzmzwhdqhxxlyzwiq6z0c"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/wl-pprint")
-    (synopsis "Wadler/Leijen pretty printer")
-    (description
-     "This is a pretty printing library based on Wadler's paper @i{A Prettier
-Printer}.  This version allows the library user to declare overlapping
-instances of the @code{Pretty} class.")
-    (license license:bsd-3)))
-
-(define-public ghc-ansi-wl-pprint
-  (package
-    (name "ghc-ansi-wl-pprint")
-    (version "0.6.8.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "ansi-wl-pprint/ansi-wl-pprint-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0gnb4mkqryv08vncxnj0bzwcnd749613yw3cxfzw6y3nsldp4c56"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-ansi-terminal" ,ghc-ansi-terminal)))
-    (home-page "https://github.com/ekmett/ansi-wl-pprint")
-    (synopsis "Wadler/Leijen Pretty Printer for colored ANSI terminal output")
-    (description "This is a pretty printing library based on Wadler's paper
-\"A Prettier Printer\".  It has been enhanced with support for ANSI terminal
-colored output using the ansi-terminal package.")
-    (license license:bsd-3)))
-
-(define-public ghc-split
-  (package
-    (name "ghc-split")
-    (version "0.2.3.3")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/split/split-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "04qlmkcyklznl03gsjg95b4nzb6i96gdapqg60rny9szgi7ngk8x"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://hackage.haskell.org/package/split")
-    (synopsis "Combinator library for splitting lists")
-    (description "This package provides a collection of Haskell functions for
-splitting lists into parts, akin to the @code{split} function found in several
-mainstream languages.")
-    (license license:bsd-3)))
-
-(define-public ghc-parser-combinators
-  (package
-    (name "ghc-parser-combinators")
-    (version "1.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "parser-combinators/parser-combinators-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1pwfdsklqwvaynwpdzmx1bs35mp6dpsyaqdnzxnqcrxwf5h8sk75"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/mrkkrp/parser-combinators")
-    (synopsis "Commonly useful parser combinators")
-    (description
-     "This is a lightweight package providing commonly useful parser
-combinators.")
-    (license license:bsd-3)))
-
-(define-public ghc-megaparsec
-  (package
-    (name "ghc-megaparsec")
-    (version "6.5.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "megaparsec/megaparsec-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "12iggy7qpf8x93jm64zf0g215xwy779bqyfyjk2bhmxqqr1yzgdy"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("4" "0ij3asi5vwlhbgwsy6nhli9a0qb7926mg809fsgyl1rnhs9fvpx1")))
-    (inputs
-     `(("ghc-case-insensitive" ,ghc-case-insensitive)
-       ("ghc-parser-combinators" ,ghc-parser-combinators)
-       ("ghc-scientific" ,ghc-scientific)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-hspec-expectations" ,ghc-hspec-expectations)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/mrkkrp/megaparsec")
-    (synopsis "Monadic parser combinators")
-    (description
-     "This is an industrial-strength monadic parser combinator library.
-Megaparsec is a feature-rich package that strikes a nice balance between
-speed, flexibility, and quality of parse errors.")
-    (license license:bsd-2)))
-
-(define-public ghc-vector
-  (package
-    (name "ghc-vector")
-    (version "0.12.0.1")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/vector/vector-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0yrx2ypiaxahvaz84af5bi855hd3107kxkbqc8km29nsp5wyw05i"))))
-    (build-system haskell-build-system)
-    ;; FIXME: To simplify upgrading all Haskell packages, we leave the tests
-    ;; disabled for now.
-    (arguments
-     `(#:cabal-revision
-       ("3" "0y5rh8k710i2a3p1h2rghvr5cfg78p5h0kbfi7ifxqqf6pzlyr1x")
-       #:tests? #f))
-    (inputs
-     `(("ghc-primitive" ,ghc-primitive)
-       ("ghc-random" ,ghc-random)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ;; ("ghc-hunit" ,ghc-hunit)
-       ;; ("ghc-test-framework" ,ghc-test-framework)
-       ;; ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ;; ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
-       ))
-    (home-page "https://github.com/haskell/vector")
-    (synopsis "Efficient Arrays")
-    (description "This library provides an efficient implementation of
-Int-indexed arrays (both mutable and immutable), with a powerful loop
-optimisation framework.")
-    (license license:bsd-3)))
-
-(define-public ghc-vector-binary-instances
-  (package
-    (name "ghc-vector-binary-instances")
-    (version "0.2.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/"
-             "vector-binary-instances/vector-binary-instances-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "1y236jb72iab9ska1mc48z6yb0xgwmj45laaqdyjxksd84z7hbrb"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("1" "196frl4akhfk7xf1nxzn8lmq99dxhzhsimanswn9yy7ym8zhki4i")))
-    (inputs
-     `(("ghc-vector" ,ghc-vector)))
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
-    (home-page "https://github.com/bos/vector-binary-instances")
-    (synopsis "Instances of Data.Binary and Data.Serialize for vector")
-    (description "This library provides instances of @code{Binary} for the
-types defined in the @code{vector} package, making it easy to serialize
-vectors to and from disk.  We use the generic interface to vectors, so all
-vector types are supported.  Specific instances are provided for unboxed,
-boxed and storable vectors.")
-    (license license:bsd-3)))
-
-(define-public ghc-bloomfilter
-  (package
-    (name "ghc-bloomfilter")
-    (version "2.0.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "bloomfilter/bloomfilter-" version ".tar.gz"))
-       (sha256
-        (base32
-         "03vrmncg1c10a2wcg5skq30m1yiknn7nwxz2gblyyfaxglshspkc"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-random" ,ghc-random)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://github.com/bos/bloomfilter")
-    (synopsis "Pure and impure Bloom filter implementations")
-    (description "This package provides both mutable and immutable Bloom
-filter data types, along with a family of hash functions and an easy-to-use
-interface.")
-    (license license:bsd-3)))
-
-(define-public ghc-network
-  (package
-    (name "ghc-network")
-    (version "2.6.3.6")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/network/network-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "198mam7ahny48p9fajznbqq16a8ya2gw0xm3gnm1si1rmc4hdplv"))))
-    (build-system haskell-build-system)
-    ;; The regression tests depend on an unpublished module.
-    (arguments `(#:tests? #f))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-doctest" ,ghc-doctest)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
-    (home-page "https://github.com/haskell/network")
-    (synopsis "Low-level networking interface")
-    (description
-     "This package provides a low-level networking interface.")
-    (license license:bsd-3)))
-
-(define-public ghc-network-uri
-  (package
-    (name "ghc-network-uri")
-    (version "2.6.1.0")
-    (outputs '("out" "doc"))
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/network-uri/network-uri-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1w27zkvn39kjr9lmw9421y8w43h572ycsfafsb7kyvr3a4ihlgj2"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:tests? #f))  ; FIXME: currently missing libraries used for tests.
-    (inputs
-     `(("ghc-network" ,ghc-network)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)))
-    (home-page
-     "https://github.com/haskell/network-uri")
-    (synopsis "Library for URI manipulation")
-    (description "This package provides an URI manipulation interface.  In
-@code{network-2.6} the @code{Network.URI} module was split off from the
-@code{network} package into this package.")
-    (license license:bsd-3)))
-
-(define-public ghc-ansi-terminal
-  (package
-    (name "ghc-ansi-terminal")
-    (version "0.8.0.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/ansi-terminal/ansi-terminal-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0428gq8m3fdnb7ldcsyk97qcch76hcxbgh2666p6f76fs2qbhg7b"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-colour" ,ghc-colour)))
-    (home-page "https://github.com/feuerbach/ansi-terminal")
-    (synopsis "ANSI terminal support for Haskell")
-    (description "This package provides ANSI terminal support for Haskell.  It
-allows cursor movement, screen clearing, color output showing or hiding the
-cursor, and changing the title.")
-    (license license:bsd-3)))
-
-(define-public ghc-vault
-  (package
-    (name "ghc-vault")
-    (version "0.3.1.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/vault/vault-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "072mbrihsdsb8c6xvg6lvk0rqjgvxvi8qkg4n6wwym5hq0pfa04y"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-semigroupoids" ,ghc-semigroupoids)))
-    (home-page
-     "https://github.com/HeinrichApfelmus/vault")
-    (synopsis "Persistent store for arbitrary values")
-    (description "This package provides vaults for Haskell.  A vault is a
-persistent store for values of arbitrary types.  It's like having first-class
-access to the storage space behind @code{IORefs}.  The data structure is
-analogous to a bank vault, where you can access different bank boxes with
-different keys; hence the name.  Also provided is a @code{locker} type,
-representing a store for a single element.")
-    (license license:bsd-3)))
-
-(define-public ghc-edisonapi
-  (package
-    (name "ghc-edisonapi")
-    (version "1.3.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/EdisonAPI"
-                           "/EdisonAPI-" version ".tar.gz"))
-       (sha256
-        (base32 "0vmmlsj8ggbpwx6fkf5fvb6jp0zpx6iba6b28m80lllr2p8bi8wm"))))
-    (build-system haskell-build-system)
-    (home-page "http://rwd.rdockins.name/edison/home/")
-    (synopsis "Library of efficient, purely-functional data structures (API)")
-    (description
-     "Edison is a library of purely functional data structures written by
-Chris Okasaki.  It is named after Thomas Alva Edison and for the mnemonic
-value EDiSon (Efficient Data Structures).  Edison provides several families of
-abstractions, each with multiple implementations.  The main abstractions
-provided by Edison are: Sequences such as stacks, queues, and dequeues;
-Collections such as sets, bags and heaps; and Associative Collections such as
-finite maps and priority queues where the priority and element are distinct.")
-    (license license:expat)))
-
-(define-public ghc-edisoncore
-  (package
-    (name "ghc-edisoncore")
-    (version "1.3.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/EdisonCore"
-                           "/EdisonCore-" version ".tar.gz"))
-       (sha256
-        (base32 "0fgj5iwiv3v2gdgx7kjcr15dcs4x1kvmjspp3p99wyhh0x6h3ikk"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-edisonapi" ,ghc-edisonapi)))
-    (home-page "http://rwd.rdockins.name/edison/home/")
-    (synopsis "Library of efficient, purely-functional data structures")
-    (description
-     "This package provides the core Edison data structure implementations,
-including multiple sequence, set, bag, and finite map concrete implementations
-with various performance characteristics.")
-    (license license:expat)))
-
-(define-public ghc-mmorph
-  (package
-    (name "ghc-mmorph")
-    (version "1.1.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/mmorph/mmorph-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1gjz1ib968lqybma7my1n19qq6cdj6a7nskrlnwy4jy9jrwzs2n9"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (home-page "https://hackage.haskell.org/package/mmorph")
-    (synopsis "Monad morphisms")
-    (description
-     "This library provides monad morphism utilities, most commonly used for
-manipulating monad transformer stacks.")
-    (license license:bsd-3)))
-
-(define-public ghc-ifelse
-  (package
-    (name "ghc-ifelse")
-    (version "0.85")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "IfElse/IfElse-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1kfx1bwfjczj93a8yqz1n8snqiq5655qgzwv1lrycry8wb1vzlwa"))))
-    (build-system haskell-build-system)
-    (home-page "http://hackage.haskell.org/package/IfElse")
-    (synopsis "Monadic control flow with anaphoric variants")
-    (description "This library provides functions for control flow inside of
-monads with anaphoric variants on @code{if} and @code{when} and a C-like
-@code{switch} function.")
-    (license license:bsd-3)))
-
-(define-public ghc-monad-control
-  (package
-    (name "ghc-monad-control")
-    (version "1.0.2.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/monad-control"
-             "/monad-control-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1c92833gr6cadidjdp8mlznkpp8lyxl0w3y7d19y8yi3klc3843c"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-transformers-base" ,ghc-transformers-base)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (home-page "https://github.com/basvandijk/monad-control")
-    (synopsis "Monad transformers to lift control operations like exception
-catching")
-    (description "This package defines the type class @code{MonadBaseControl},
-a subset of @code{MonadBase} into which generic control operations such as
-@code{catch} can be lifted from @code{IO} or any other base monad.")
-    (license license:bsd-3)))
-
-(define-public ghc-fail
-  (package
-    (name "ghc-fail")
-    (version "4.9.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/fail/fail-"
-                           version ".tar.gz"))
-       (sha256
-        (base32 "18nlj6xvnggy61gwbyrpmvbdkq928wv0wx2zcsljb52kbhddnp3d"))))
-    (build-system haskell-build-system)
-    (arguments `(#:haddock? #f)) ; Package contains no documentation.
-    (home-page "https://prime.haskell.org/wiki/Libraries/Proposals/MonadFail")
-    (synopsis "Forward-compatible MonadFail class")
-    (description
-     "This package contains the @code{Control.Monad.Fail} module providing the
-@uref{https://prime.haskell.org/wiki/Libraries/Proposals/MonadFail, MonadFail}
-class that became available in
-@uref{https://hackage.haskell.org/package/base-4.9.0.0, base-4.9.0.0} for
-older @code{base} package versions.  This package turns into an empty package
-when used with GHC versions which already provide the
-@code{Control.Monad.Fail} module.")
-    (license license:bsd-3)))
-
-(define-public ghc-monadplus
-  (package
-    (name "ghc-monadplus")
-    (version "1.4.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/monadplus"
-                           "/monadplus-" version ".tar.gz"))
-       (sha256
-        (base32 "15b5320wdpmdp5slpphnc1x4rhjch3igw245dp2jxbqyvchdavin"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/monadplus")
-    (synopsis "Filtering and folding over arbitrary MonadPlus instances")
-    (description
-     "This package generalizes many common stream operations such as
-@code{filter}, @code{catMaybes} etc, enabling filtering and folding over
-arbitrary @code{MonadPlus} instances.")
-    (license license:bsd-3)))
-
-(define-public ghc-byteorder
-  (package
-    (name "ghc-byteorder")
-    (version "1.0.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/byteorder/byteorder-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "06995paxbxk8lldvarqpb3ygcjbg4v8dk4scib1rjzwlhssvn85x"))))
-    (build-system haskell-build-system)
-    (home-page
-     "http://community.haskell.org/~aslatter/code/byteorder")
-    (synopsis
-     "Exposes the native endianness of the system")
-    (description
-     "This package is for working with the native byte-ordering of the
-system.")
-    (license license:bsd-3)))
-
-(define-public ghc-base-compat
-  (package
-    (name "ghc-base-compat")
-    (version "0.10.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/base-compat/base-compat-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0ksp990gxs731mq19rzbxrbs43nazfljjc8krlx5bjqblw3kfs8d"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://hackage.haskell.org/package/base-compat")
-    (synopsis "Haskell compiler compatibility library")
-    (description "This library provides functions available in later versions
-of base to a wider range of compilers, without requiring the use of CPP
-pragmas in your code.")
-    (license license:bsd-3)))
-
-(define-public ghc-blaze-builder
-  (package
-    (name "ghc-blaze-builder")
-    (version "0.4.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/blaze-builder/blaze-builder-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "05681dih2d8s96an945wkbwl05w8ddbcfx8n3r3ck79ydyb8pz4i"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f))          ; FIXME: Missing test libraries.
-    (inputs
-     `(("ghc-utf8-string" ,ghc-utf8-string)))
-    (home-page "https://github.com/lpsmith/blaze-builder")
-    (synopsis "Efficient buffered output")
-    (description "This library provides an implementation of the older
-@code{blaze-builder} interface in terms of the new builder that shipped with
-@code{bytestring-0.10.4.0}.  This implementation is mostly intended as a
-bridge to the new builder, so that code that uses the old interface can
-interoperate with code that uses the new implementation.")
-    (license license:bsd-3)))
-
-(define-public ghc-blaze-markup
-  (package
-    (name "ghc-blaze-markup")
-    (version "0.8.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "blaze-markup/blaze-markup-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0ih1c3qahkdgzbqihdhny5s313l2m66fbb88w8jbx7yz56y7rawh"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "blaze-markup.cabal"
-               (("tasty            >= 1\\.0  && < 1\\.1")
-                "tasty            >= 1.0  && < 1.2")))))))
-    (inputs
-     `(("ghc-blaze-builder" ,ghc-blaze-builder)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
-    (home-page "https://jaspervdj.be/blaze")
-    (synopsis "Fast markup combinator library for Haskell")
-    (description "This library provides core modules of a markup combinator
-library for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-easy-file
-  (package
-    (name "ghc-easy-file")
-    (version "0.2.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/easy-file/easy-file-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0zmlcz723051qpn8l8vi51c5rx1blwrw4094jcshkmj8p9r2xxaj"))))
-    (build-system haskell-build-system)
-    (home-page
-     "https://github.com/kazu-yamamoto/easy-file")
-    (synopsis "File handling library for Haskell")
-    (description "This library provides file handling utilities for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-async
-  (package
-    (name "ghc-async")
-    (version "2.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/async/async-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "09whscli1q5z7lzyq9rfk0bq1ydplh6pjmc6qv0x668k5818c2wg"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-hashable" ,ghc-hashable)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
-    (home-page "https://github.com/simonmar/async")
-    (synopsis "Library to run IO operations asynchronously")
-    (description "Async provides a library to run IO operations
-asynchronously, and wait for their results.  It is a higher-level interface
-over threads in Haskell, in which @code{Async a} is a concurrent thread that
-will eventually deliver a value of type @code{a}.")
-    (license license:bsd-3)))
-
-(define-public ghc-fingertree
-  (package
-    (name "ghc-fingertree")
-    (version "0.1.4.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/fingertree/fingertree-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "192fyzv0pn1437wdpqg1l80rswkk4rw3w61r4bq7dhv354bdqy4p"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://hackage.haskell.org/package/fingertree")
-    (synopsis "Generic finger-tree structure")
-    (description "This library provides finger trees, a general sequence
-representation with arbitrary annotations, for use as a base for
-implementations of various collection types.  It includes examples, as
-described in section 4 of Ralf Hinze and Ross Paterson, \"Finger trees: a
-simple general-purpose data structure\".")
-    (license license:bsd-3)))
-
-(define-public ghc-optparse-applicative
-  (package
-    (name "ghc-optparse-applicative")
-    (version "0.14.2.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/optparse-applicative"
-             "/optparse-applicative-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0c3z1mvynlyv1garjbdmdd3npm40dabgm75js4r07cf766c1wd71"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-ansi-wl-pprint" ,ghc-ansi-wl-pprint)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/pcapriotti/optparse-applicative")
-    (synopsis "Utilities and combinators for parsing command line options")
-    (description "This package provides utilities and combinators for parsing
-command line options in Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-base-orphans
-  (package
-    (name "ghc-base-orphans")
-    (version "0.7")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/base-orphans/base-orphans-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "057f9npnqk71ccfh95djfkpd54dzazphj06grwxa3fyhwcwxrb8a"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://hackage.haskell.org/package/base-orphans")
-    (synopsis "Orphan instances for backwards compatibility")
-    (description "This package defines orphan instances that mimic instances
-available in later versions of base to a wider (older) range of compilers.")
-    (license license:bsd-3)))
-
-(define-public ghc-auto-update
-  (package
-    (name "ghc-auto-update")
-    (version "0.1.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/auto-update/auto-update-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "09dlh2alsx2mw5kvj931yhbj0aw7jmly2cm9xbscm2sf098w35jy"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/yesodweb/wai")
-    (synopsis "Efficiently run periodic, on-demand actions")
-    (description "This library provides mechanisms to efficiently run
-periodic, on-demand actions in Haskell.")
-    (license license:expat)))
-
-(define-public ghc-tagged
-  (package
-    (name "ghc-tagged")
-    (version "0.8.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/tagged/tagged-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "16cdzh0bw16nvjnyyy5j9s60malhz4nnazw96vxb0xzdap4m2z74"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("2" "0r2knfcq0b4s652vlvlnfwxlc2mkc2ra9kl8bp4zdn1awmfy0ia5")))
-    (inputs
-     `(("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (home-page "https://hackage.haskell.org/package/tagged")
-    (synopsis "Haskell phantom types to avoid passing dummy arguments")
-    (description "This library provides phantom types for Haskell 98, to avoid
-having to unsafely pass dummy arguments.")
-    (license license:bsd-3)))
-
-(define-public ghc-unbounded-delays
-  (package
-    (name "ghc-unbounded-delays")
-    (version "0.1.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/unbounded-delays/unbounded-delays-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1ir9fghbrc214c97bwafk5ck6cacxz1pdnq4i18p604d1b8zg9wa"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/basvandijk/unbounded-delays")
-    (synopsis "Unbounded thread delays and timeouts")
-    (description "The @code{threadDelay} and @code{timeout} functions from the
-Haskell base library use the bounded @code{Int} type for specifying the delay
-or timeout period.  This package provides alternative functions which use the
-unbounded @code{Integer} type.")
-    (license license:bsd-3)))
-
-(define-public ghc-clock
-  (package
-    (name "ghc-clock")
-    (version "0.7.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/"
-             "clock/"
-             "clock-" version ".tar.gz"))
-       (sha256
-        (base32 "07v91s20halsqjmziqb1sqjp2sjpckl9by7y28aaklwqi2bh2rl8"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
-    (home-page "https://hackage.haskell.org/package/clock")
-    (synopsis "High-resolution clock for Haskell")
-    (description "A package for convenient access to high-resolution clock and
-timer functions of different operating systems via a unified API.")
-    (license license:bsd-3)))
-
-;; This package builds `clock` without tests, since the tests rely on tasty
-;; and tasty-quickcheck, which in turn require clock to build.
-(define-public ghc-clock-bootstrap
-  (package
-    (inherit ghc-clock)
-    (name "ghc-clock-bootstrap")
-    (arguments '(#:tests? #f))
-    (inputs '())
-    (properties '((hidden? #t)))))
-
-(define-public ghc-charset
-  (package
-    (name "ghc-charset")
-    (version "0.3.7.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/charset/charset-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1gn0m96qpjww8hpp2g1as5yy0wcwy4iq73h3kz6g0yxxhcl5sh9x"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)))
-    (home-page "https://github.com/ekmett/charset")
-    (synopsis "Fast unicode character sets for Haskell")
-    (description "This package provides fast unicode character sets for
-Haskell, based on complemented PATRICIA tries.")
-    (license license:bsd-3)))
-
-(define-public ghc-bytestring-builder
-  (package
-    (name "ghc-bytestring-builder")
-    (version "0.10.8.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/bytestring-builder"
-             "/bytestring-builder-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1hnvjac28y44yn78c9vdp1zvrknvlw98ky3g4n5vivr16rvh8x3d"))))
-    (build-system haskell-build-system)
-    (arguments `(#:haddock? #f)) ; Package contains no documentation.
-    (home-page "https://hackage.haskell.org/package/bytestring-builder")
-    (synopsis "The new bytestring builder, packaged outside of GHC")
-    (description "This package provides the bytestring builder that is
-debuting in bytestring-0.10.4.0, which should be shipping with GHC 7.8.
-Compatibility package for older packages.")
-    (license license:bsd-3)))
-
-(define-public ghc-nats
-  (package
-    (name "ghc-nats")
-    (version "1.1.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/nats/nats-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1v40drmhixck3pz3mdfghamh73l4rp71mzcviipv1y8jhrfxilmr"))))
-    (build-system haskell-build-system)
-    (arguments `(#:haddock? #f))
-    (inputs
-     `(("ghc-hashable" ,ghc-hashable)))
-    (home-page "https://hackage.haskell.org/package/nats")
-    (synopsis "Natural numbers")
-    (description "This library provides the natural numbers for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-nats-bootstrap
-  (package
-    (inherit ghc-nats)
-    (name "ghc-nats-bootstrap")
-    (inputs
-     `(("ghc-hashable" ,ghc-hashable-bootstrap)))
-    (properties '((hidden? #t)))))
-
-(define-public ghc-void
-  (package
-    (name "ghc-void")
-    (version "0.7.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/void/void-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0aygw0yb1h3yhmfl3bkwh5d3h0l4mmsxz7j53vdm6jryl1kgxzyk"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-hashable" ,ghc-hashable)))
-    (home-page "https://github.com/ekmett/void")
-    (synopsis
-     "Logically uninhabited data type")
-    (description
-     "A Haskell 98 logically uninhabited data type, used to indicate that a
-given term should not exist.")
-    (license license:bsd-3)))
-
-(define-public ghc-invariant
-  (package
-    (name "ghc-invariant")
-    (version "0.5.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/invariant/invariant-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0aqj7z55632qdg45074kgn9qfdxzb0a2f8lgjzr0l0i4mm2rr37b"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-bifunctors" ,ghc-bifunctors)
-       ("ghc-comonad" ,ghc-comonad)
-       ("ghc-contravariant" ,ghc-contravariant)
-       ("ghc-profunctors" ,ghc-profunctors)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-statevar" ,ghc-statevar)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-th-abstraction" ,ghc-th-abstraction)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/nfrisby/invariant-functors")
-    (synopsis "Haskell98 invariant functors")
-    (description "Haskell98 invariant functors (also known as exponential
-functors).  For more information, see Edward Kmett's article
-@uref{http://comonad.com/reader/2008/rotten-bananas/, Rotten Bananas}.")
-    (license license:bsd-2)))
-
-(define-public ghc-kan-extensions
-  (package
-    (name "ghc-kan-extensions")
-    (version "5.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/kan-extensions/kan-extensions-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1lyvyiwwh962j2nnnsqzlvp5zq6z8p3spvhmji99cjvldxc7wwkb"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-adjunctions" ,ghc-adjunctions)
-       ("ghc-comonad" ,ghc-comonad)
-       ("ghc-contravariant" ,ghc-contravariant)
-       ("ghc-distributive" ,ghc-distributive)
-       ("ghc-free" ,ghc-free)
-       ("ghc-invariant" ,ghc-invariant)
-       ("ghc-semigroupoids" ,ghc-semigroupoids)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (home-page "https://github.com/ekmett/kan-extensions/")
-    (synopsis "Kan extensions library")
-    (description "This library provides Kan extensions, Kan lifts, various
-forms of the Yoneda lemma, and (co)density (co)monads for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-call-stack
-  (package
-    (name "ghc-call-stack")
-    (version "0.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "call-stack/call-stack-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1qmihf5jafmc79sk52l6gpx75f5bnla2lp62kh3p34x3j84mwpzj"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-nanospec" ,ghc-nanospec)))
-    (home-page "https://github.com/sol/call-stack#readme")
-    (synopsis "Use GHC call-stacks in a backward compatible way")
-    (description "This package provides a compatibility layer for using GHC
-call stacks with different versions of the compiler.")
-    (license license:expat)))
-
-;; This is used as an input to ghc-hunit.  We cannot use ghc-call-stack there,
-;; because it depends on ghc-nanospec, which depends on ghc-hunit.
-(define-public ghc-call-stack-boot
-  (hidden-package
-   (package
-     (inherit ghc-call-stack)
-     (arguments '(#:tests? #f))
-     (inputs '()))))
-
-(define-public ghc-statevar
-  (package
-    (name "ghc-statevar")
-    (version "1.1.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/StateVar/StateVar-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "08r2iw0gdmfs4f6wraaq19vfmkjdbics3dbhw39y7mdjd98kcr7b"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/StateVar")
-    (synopsis "State variables for Haskell")
-    (description "This package provides state variables, which are references
-in the @code{IO} monad, like @code{IORef}s or parts of the OpenGL state.")
-    (license license:bsd-3)))
-
-(define-public ghc-lens
-  (package
-    (name "ghc-lens")
-    (version "4.16.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/lens/lens-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1im4drhbydbawd6i0jsrzpqihnmx4ywpkg7yg94ddwsw3mxwkgpm"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("2" "11h83lj5mba4grhz1qx3irz10ysm9c3k7k6i6xv2cr60q8xin3ri")))
-    (inputs
-     `(("ghc-base-orphans" ,ghc-base-orphans)
-       ("ghc-bifunctors" ,ghc-bifunctors)
-       ("ghc-distributive" ,ghc-distributive)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-free" ,ghc-free)
-       ("ghc-kan-extensions" ,ghc-kan-extensions)
-       ("ghc-parallel" ,ghc-parallel)
-       ("ghc-reflection" ,ghc-reflection)
-       ("ghc-semigroupoids" ,ghc-semigroupoids)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-call-stack" ,ghc-call-stack)
-       ("ghc-comonad" ,ghc-comonad)
-       ("ghc-contravariant" ,ghc-contravariant)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-profunctors" ,ghc-profunctors)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-void" ,ghc-void)
-       ("ghc-generic-deriving" ,ghc-generic-deriving)
-       ("ghc-nats" ,ghc-nats)
-       ("ghc-simple-reflect" ,ghc-simple-reflect)
-       ("hlint" ,hlint)))
-    (native-inputs
-     `(("cabal-doctest" ,cabal-doctest)
-       ("ghc-doctest" ,ghc-doctest)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-th" ,ghc-test-framework-th)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/ekmett/lens/")
-    (synopsis "Lenses, Folds and Traversals")
-    (description "This library provides @code{Control.Lens}.  The combinators
-in @code{Control.Lens} provide a highly generic toolbox for composing families
-of getters, folds, isomorphisms, traversals, setters and lenses and their
-indexed variants.")
-    (license license:bsd-3)))
-
-(define-public ghc-cheapskate
-  (package
-    (name "ghc-cheapskate")
-    (version "0.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/cheapskate/cheapskate-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1hiqi7h76shjzs2zj0j8g6wnq2hbiq1hmfafdazr97fba2zl2432"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-blaze-html" ,ghc-blaze-html)
-       ("ghc-xss-sanitize" ,ghc-xss-sanitize)
-       ("ghc-data-default" ,ghc-data-default)
-       ("ghc-syb" ,ghc-syb)
-       ("ghc-uniplate" ,ghc-uniplate)))
-    (home-page "https://github.com/jgm/cheapskate")
-    (synopsis "Experimental markdown processor")
-    (description "Cheapskate is an experimental Markdown processor in pure
-Haskell.  It aims to process Markdown efficiently and in the most forgiving
-possible way.  It is designed to deal with any input, including garbage, with
-linear performance.  Output is sanitized by default for protection against
-cross-site scripting (@dfn{XSS}) attacks.")
-    (license license:bsd-3)))
-
-(define-public ghc-bifunctors
-  (package
-    (name "ghc-bifunctors")
-    (version "5.5.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/bifunctors/bifunctors-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1jn9rxg643xnlhrknmjz88nblcpsr45xwjkwwnn5nxpasa7m4d6l"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-base-orphans" ,ghc-base-orphans)
-       ("ghc-comonad" ,ghc-comonad)
-       ("ghc-th-abstraction" ,ghc-th-abstraction)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-semigroups" ,ghc-semigroups)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/ekmett/bifunctors/")
-    (synopsis "Bifunctors for Haskell")
-    (description "This package provides bifunctors for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-semigroupoids
-  (package
-    (name "ghc-semigroupoids")
-    (version "5.2.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/semigroupoids/semigroupoids-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "17i96y4iqj8clcs090lf6k0ij3j16nj14vsfwz0mm9nd6i4gbpp4"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("4" "0pqfrxzypjq6z8lgdkzq4vhcyqkpk5326hny0r6snpc3gm78r4ij")))
-    (inputs
-     `(("ghc-base-orphans" ,ghc-base-orphans)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-bifunctors" ,ghc-bifunctors)
-       ("ghc-comonad" ,ghc-comonad)
-       ("ghc-contravariant" ,ghc-contravariant)
-       ("ghc-distributive" ,ghc-distributive)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)))
-    (native-inputs
-     `(("cabal-doctest" ,cabal-doctest)
-       ("ghc-doctest" ,ghc-doctest)))
-    (home-page "https://github.com/ekmett/semigroupoids")
-    (synopsis "Semigroupoids operations for Haskell")
-    (description "This library provides a wide array of (semi)groupoids and
-operations for working with them.  A @code{Semigroupoid} is a @code{Category}
-without the requirement of identity arrows for every object in the category.
-A @code{Category} is any @code{Semigroupoid} for which the Yoneda lemma holds.
-Finally, to work with these weaker structures it is beneficial to have
-containers that can provide stronger guarantees about their contents, so
-versions of @code{Traversable} and @code{Foldable} that can be folded with
-just a @code{Semigroup} are added.")
-    (license license:bsd-3)))
-
-(define-public ghc-contravariant
-  (package
-    (name "ghc-contravariant")
-    (version "1.4.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/contravariant/contravariant-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1vfhk8c5cxmmakx7rflap1ipkx5q0j5vnlrcz7yz6y53kxhksgf9"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-void" ,ghc-void)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-statevar" ,ghc-statevar)
-       ("ghc-semigroups" ,ghc-semigroups)))
-    (home-page
-     "https://github.com/ekmett/contravariant/")
-    (synopsis "Contravariant functors")
-    (description "Contravariant functors for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-semigroups
-  (package
-    (name "ghc-semigroups")
-    (version "0.18.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/semigroups/semigroups-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "17g29h62g1k51ghhvzkw72zksjgi6vs6bfipkj81pqw1dsprcamb"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-nats" ,ghc-nats)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-hashable" ,ghc-hashable)))
-    (home-page "https://github.com/ekmett/semigroups/")
-    (synopsis "Semigroup operations for Haskell")
-    (description "This package provides semigroups for Haskell.  In
-mathematics, a semigroup is an algebraic structure consisting of a set
-together with an associative binary operation.  A semigroup generalizes a
-monoid in that there might not exist an identity element.  It
-also (originally) generalized a group (a monoid with all inverses) to a type
-where every element did not have to have an inverse, thus the name
-semigroup.")
-    (license license:bsd-3)))
-
-(define-public ghc-semigroups-bootstrap
-  (package
-    (inherit ghc-semigroups)
-    (name "ghc-semigroups-bootstrap")
-    (inputs
-     `(("ghc-nats" ,ghc-nats-bootstrap)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-unordered-containers" ,ghc-unordered-containers-bootstrap)
-       ("ghc-hashable" ,ghc-hashable-bootstrap)))
-    (properties '(hidden? #t))))
-
-(define-public ghc-free
-  (package
-    (name "ghc-free")
-    (version "5.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/free/free-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "15m3n9vhz7z3kzv1w3wlfa3x8jp4cbrkwmrcjr7jlx39iqffn1gg"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-prelude-extras" ,ghc-prelude-extras)
-       ("ghc-profunctors" ,ghc-profunctors)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-bifunctors" ,ghc-bifunctors)
-       ("ghc-comonad" ,ghc-comonad)
-       ("ghc-distributive" ,ghc-distributive)
-       ("ghc-semigroupoids" ,ghc-semigroupoids)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-transformers-base" ,ghc-transformers-base)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (home-page "https://github.com/ekmett/free/")
-    (synopsis "Unrestricted monads for Haskell")
-    (description "This library provides free monads, which are useful for many
-tree-like structures and domain specific languages.  If @code{f} is a
-@code{Functor} then the free @code{Monad} on @code{f} is the type of trees
-whose nodes are labeled with the constructors of @code{f}.  The word \"free\"
-is used in the sense of \"unrestricted\" rather than \"zero-cost\": @code{Free
-f} makes no constraining assumptions beyond those given by @code{f} and the
-definition of @code{Monad}.")
-    (license license:bsd-3)))
-
-(define-public ghc-adjunctions
-  (package
-    (name "ghc-adjunctions")
-    (version "4.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/adjunctions/adjunctions-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1sbal7cbhm12crfnfhkk322jnzgx7lhw3jzq0p463bipagsjwz2h"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-profunctors" ,ghc-profunctors)
-       ("ghc-comonad" ,ghc-comonad)
-       ("ghc-contravariant" ,ghc-contravariant)
-       ("ghc-distributive" ,ghc-distributive)
-       ("ghc-free" ,ghc-free)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-semigroupoids" ,ghc-semigroupoids)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-void" ,ghc-void)))
-    (native-inputs
-     `(("ghc-generic-deriving" ,ghc-generic-deriving)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/ekmett/adjunctions/")
-    (synopsis "Adjunctions and representable functors")
-    (description "This library provides adjunctions and representable functors
-for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-equivalence
-  (package
-    (name "ghc-equivalence")
-    (version "0.3.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/equivalence"
-                           "/equivalence-" version ".tar.gz"))
-       (sha256
-        (base32 "0a85bdyyvjqs5z4kfhhf758210k9gi9dv42ik66a3jl0z7aix8kx"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-stmonadtrans" ,ghc-stmonadtrans)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://github.com/pa-ba/equivalence")
-    (synopsis "Maintaining an equivalence relation implemented as union-find")
-    (description
-     "This is an implementation of Tarjan's Union-Find algorithm (Robert E.@:
-Tarjan.  \"Efficiency of a Good But Not Linear Set Union Algorithm\",JACM
-22(2), 1975) in order to maintain an equivalence relation.  This
-implementation is a port of the @code{union-find} package using the @code{ST}
-monad transformer (instead of the IO monad).")
-    (license license:bsd-3)))
-
-(define-public ghc-fast-logger
-  (package
-    (name "ghc-fast-logger")
-    (version "2.4.11")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/fast-logger/fast-logger-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1ad2vq4nifdxshqk9yrmghqizhkgybfz134kpr6padglb2mxxrdv"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-auto-update" ,ghc-auto-update)
-       ("ghc-easy-file" ,ghc-easy-file)
-       ("ghc-unix-time" ,ghc-unix-time)))
-    (native-inputs
-     `(("hspec-discover" ,hspec-discover)
-       ("ghc-hspec" ,ghc-hspec)))
-    (home-page "https://hackage.haskell.org/package/fast-logger")
-    (synopsis "Fast logging system")
-    (description "This library provides a fast logging system for Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-doctest
-  (package
-    (name "ghc-doctest")
-    (version "0.16.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/doctest/doctest-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0hkccch65s3kp0b36h7bqhilnpi4bx8kngncm7ma9vbd3dwacjdv"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f))          ; FIXME: missing test framework
-    (inputs
-     `(("ghc-syb" ,ghc-syb)
-       ("ghc-paths" ,ghc-paths)
-       ("ghc-base-compat" ,ghc-base-compat)
-       ("ghc-code-page" ,ghc-code-page)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-stringbuilder" ,ghc-stringbuilder)
-       ("ghc-silently" ,ghc-silently)
-       ("ghc-setenv" ,ghc-setenv)))
-    (home-page
-     "https://github.com/sol/doctest#readme")
-    (synopsis "Test interactive Haskell examples")
-    (description "The doctest program checks examples in source code comments.
-It is modeled after doctest for Python, see
-@uref{https://docs.python.org/library/doctest.html, the Doctest website}.")
-    (license license:expat)))
-
-(define-public ghc-lifted-base
-  (package
-    (name "ghc-lifted-base")
-    (version "0.2.3.12")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/lifted-base/lifted-base-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1i8p8d3rkdh21bhgjjh32vd7qqjr7jq7p59qds0aw2kmargsjd61"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f)) ; FIXME: Missing testing libraries.
-    (inputs
-     `(("ghc-transformers-base" ,ghc-transformers-base)
-       ("ghc-monad-control" ,ghc-monad-control)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-hunit" ,ghc-hunit)))
-    (home-page "https://github.com/basvandijk/lifted-base")
-    (synopsis "Lifted IO operations from the base library")
-    (description "Lifted-base exports IO operations from the @code{base}
-library lifted to any instance of @code{MonadBase} or @code{MonadBaseControl}.
-Note that not all modules from @code{base} are converted yet.  The package
-includes a copy of the @code{monad-peel} test suite written by Anders
-Kaseorg.")
-    (license license:bsd-3)))
-
-(define-public ghc-word8
-  (package
-    (name "ghc-word8")
-    (version "0.1.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/word8/word8-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "12jx7f13d2h1djq4fh4dyrab61sm49mj1w61j3rzp2vjfm696c16"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://hackage.haskell.org/package/word8")
-    (synopsis "Word8 library for Haskell")
-    (description "Word8 library to be used with @code{Data.ByteString}.")
-    (license license:bsd-3)))
-
-(define-public ghc-stringsearch
-  (package
-    (name "ghc-stringsearch")
-    (version "0.3.6.6")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/stringsearch/stringsearch-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0jpy9xjcjdbpi3wk6mg7xwd7wfi2mma70p97v1ij5i8bj9qijpr9"))))
-    (build-system haskell-build-system)
-    (home-page "https://bitbucket.org/dafis/stringsearch")
-    (synopsis "Fast searching, splitting and replacing of ByteStrings")
-    (description "This package provides several functions to quickly search
-for substrings in strict or lazy @code{ByteStrings}.  It also provides
-functions for breaking or splitting on substrings and replacing all
-occurrences of a substring (the first in case of overlaps) with another.")
-    (license license:bsd-3)))
-
-(define-public ghc-integer-logarithms
-  (package
-    (name "ghc-integer-logarithms")
-    (version "1.0.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "integer-logarithms/integer-logarithms-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1wj8kgjg5bn2yrs4zh9qfjv85cx6w998j9pi39yrbv305944mb9j"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "integer-logarithms.cabal"
-               (("tasty >= 0\\.10 && < 1\\.1")
-                "tasty >= 0.10 && < 1.2")))))))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-smallcheck" ,ghc-smallcheck)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-       ("ghc-tasty-smallcheck" ,ghc-tasty-smallcheck)))
-    (home-page "https://github.com/Bodigrim/integer-logarithms")
-    (synopsis "Integer logarithms")
-    (description
-     "This package provides the following modules:
-@code{Math.NumberTheory.Logarithms} and
-@code{Math.NumberTheory.Powers.Integer} from the @code{arithmoi} package,
-@code{GHC.Integer.Logarithms.Compat} and
-@code{Math.NumberTheory.Power.Natural}, as well as some additional functions
-in migrated modules.")
-    (license license:expat)))
-
-(define-public ghc-integer-logarithms-bootstrap
-  (package
-    (inherit ghc-integer-logarithms)
-    (name "ghc-integer-logarithms-bootstrap")
-    (arguments `(#:tests? #f))
-    (native-inputs '())
-    (properties '(hidden? #t))))
-
-(define-public ghc-scientific
-  (package
-    (name "ghc-scientific")
-    (version "0.3.6.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/scientific/scientific-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "03ql2f0ac8bsl524idy9xxa3kxisb2sj3avflzw580j5hzy0m397"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-integer-logarithms" ,ghc-integer-logarithms)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-primitive" ,ghc-primitive)))
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-ant-xml" ,ghc-tasty-ant-xml)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-smallcheck" ,ghc-tasty-smallcheck)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-       ("ghc-smallcheck" ,ghc-smallcheck)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/basvandijk/scientific")
-    (synopsis "Numbers represented using scientific notation")
-    (description "This package provides @code{Data.Scientific}, which provides
-the number type @code{Scientific}.  Scientific numbers are arbitrary precision
-and space efficient.  They are represented using
-@uref{https://en.wikipedia.org/wiki/Scientific_notation, scientific
-notation}.")
-    (license license:bsd-3)))
-
-(define-public ghc-scientific-bootstrap
-  (package
-    (inherit ghc-scientific)
-    (name "ghc-scientific-bootstrap")
-    (arguments `(#:tests? #f))
-    (inputs
-     `(("ghc-integer-logarithms" ,ghc-integer-logarithms-bootstrap)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-primitive" ,ghc-primitive)))
-    (native-inputs '())
-    (properties '(hidden? #t))))
-
-(define-public ghc-boxes
-  (package
-    (name "ghc-boxes")
-    (version "0.1.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/boxes/boxes-"
-                           version ".tar.gz"))
-       (sha256
-        (base32 "1hsnmw95i58d4bkpxby3ddsj1cawypw4mdyb18m393s5i8p7iq9q"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-split" ,ghc-split)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://hackage.haskell.org/package/boxes")
-    (synopsis "2D text pretty-printing library")
-    (description
-     "Boxes is a pretty-printing library for laying out text in two dimensions,
-using a simple box model.")
-    (license license:bsd-3)))
-
-(define-public ghc-deepseq-generics
-  (package
-    (name "ghc-deepseq-generics")
-    (version "0.2.0.0")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "deepseq-generics/deepseq-generics-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "17bwghc15mc9pchfd1w46jh2p3wzc86aj6a537wqwxn08rayzcxh"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("2" "1pnidf8w8x0w5fsqgv8hhrw07slmhxwy5x4fikgk0bd6k76aqicb")))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
-    (home-page "https://github.com/hvr/deepseq-generics")
-    (synopsis "Generic RNF implementation")
-    (description
-     "This package provides a @code{GHC.Generics}-based
-@code{Control.DeepSeq.Generics.genericRnf} function which can be used for
-providing an @code{rnf} implementation.")
-    (license license:bsd-3)))
-
-(define-public ghc-string-qq
-  (package
-    (name "ghc-string-qq")
-    (version "0.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/string-qq/string-qq-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0662m3i5xrdrr95w829bszkhp88mj9iy1zya54vk2sl5hz9wlmwp"))))
-    (build-system haskell-build-system)
-    (home-page "http://hackage.haskell.org/package/string-qq")
-    (synopsis
-     "QuasiQuoter for non-interpolated strings, texts and bytestrings.")
-    (description
-     "This package provides a quasiquoter for non-interpolated strings, texts
-and bytestrings.")
-    (license license:public-domain)))
-
-(define-public ghc-pandoc-types
-  (package
-    (name "ghc-pandoc-types")
-    (version "1.17.5.1")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "pandoc-types/pandoc-types-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "1q6v2bynij724fv347mhqxdscwifzrx5jb9mq80608qf638fn717"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-syb" ,ghc-syb)
-       ("ghc-aeson" ,ghc-aeson)
-       ("ghc-string-qq" ,ghc-string-qq)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
-       ("ghc-hunit" ,ghc-hunit)))
-    (home-page "http://johnmacfarlane.net/pandoc")
-    (synopsis "Types for representing a structured document")
-    (description
-     "This module defines the @code{Pandoc} data structure, which is used by
-pandoc to represent structured documents.  It also provides functions for
-building up, manipulating and serialising @code{Pandoc} structures.")
-    (license license:bsd-3)))
-
-(define-public ghc-texmath
-  (package
-    (name "ghc-texmath")
-    (version "0.11.0.1")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "texmath/texmath-" version ".tar.gz"))
-              (sha256
-               (base32
-                "11dc09hfnyfsz20ch2c867w0zdgjkzq41506lm61i3dk87ngdisf"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-syb" ,ghc-syb)
-       ("ghc-network-uri" ,ghc-network-uri)
-       ("ghc-split" ,ghc-split)
-       ("ghc-temporary" ,ghc-temporary)
-       ("ghc-utf8-string" ,ghc-utf8-string)
-       ("ghc-xml" ,ghc-xml)
-       ("ghc-pandoc-types" ,ghc-pandoc-types)))
-    (home-page "https://github.com/jgm/texmath")
-    (synopsis "Conversion between formats used to represent mathematics")
-    (description
-     "The texmath library provides functions to read and write TeX math,
-presentation MathML, and OMML (Office Math Markup Language, used in Microsoft
-Office).  Support is also included for converting math formats to pandoc's
-native format (allowing conversion, via pandoc, to a variety of different
-markup formats).  The TeX reader supports basic LaTeX and AMS extensions, and
-it can parse and apply LaTeX macros.")
-    (license license:gpl2+)))
-
-(define-public ghc-regex-pcre-builtin
-  (package
-    (name "ghc-regex-pcre-builtin")
-    (version "0.94.4.8.8.35")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "regex-pcre-builtin/regex-pcre-builtin-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "0y7as9wqlkykpipka2cfdhmcnin345q01pp0wsva8fwmvsavdl8b"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-regex-base" ,ghc-regex-base)))
-    (home-page "https://hackage.haskell.org/package/regex-pcre")
-    (synopsis "Enhancement of the builtin Text.Regex library")
-    (description
-     "This package is an enhancement of the @code{Text.Regex} library,
-providing the PCRE backend to accompany regex-base, with bundled code from
-@url{https://www.pcre.org}.")
-    (license license:bsd-3)))
-
-(define-public ghc-diff
-  (package
-    (name "ghc-diff")
-    (version "0.3.4")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "Diff/Diff-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0bqcdvhxx8dmqc3793m6axg813wv9ldz2j37f1wygbbrbbndmdvp"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://hub.darcs.net/sterlingclover/Diff")
-    (synopsis "O(ND) diff algorithm in Haskell")
-    (description
-     "This package provides an implementation of the standard diff algorithm,
-and utilities for pretty printing.")
-    (license license:bsd-3)))
-
-(define-public ghc-highlighting-kate
-  (package
-    (name "ghc-highlighting-kate")
-    (version "0.6.4")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "highlighting-kate/highlighting-kate-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "1bqv00gfmrsf0jjr4qf3lhshvfkyzmhbi3pjb6mafbnsyn2k7f6q"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-diff" ,ghc-diff)
-       ("ghc-regex-pcre-builtin" ,ghc-regex-pcre-builtin)))
-    (native-inputs
-     `(("ghc-blaze-html" ,ghc-blaze-html)
-       ("ghc-utf8-string" ,ghc-utf8-string)))
-    (home-page "https://github.com/jgm/highlighting-kate")
-    (synopsis "Syntax highlighting library")
-    (description
-     "Highlighting-kate is a syntax highlighting library with support for
-nearly one hundred languages.  The syntax parsers are automatically generated
-from @uref{https://kate-editor.org/, Kate syntax descriptions}, so any syntax
-supported by Kate can be added.  An (optional) command-line program is
-provided, along with a utility for generating new parsers from Kate XML syntax
-descriptions.")
-    (license license:gpl2+)))
-
-(define-public ghc-cmark
-  (package
-    (name "ghc-cmark")
-    (version "0.5.6")
-    (source (origin
-              (method url-fetch)
-              ;; XXX As of version 0.5.6, this package bundles libcmark 0.28.0.
-              ;; See cbits/cmark_version.h.
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "cmark/cmark-" version ".tar.gz"))
-              (sha256
-               (base32
-                "1c1j3a8b9qx5zk9myqm3gap8ymz7fipwrdmyfsq9wkkdr9x4np45"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)))
-    (home-page "https://github.com/jgm/commonmark-hs")
-    (synopsis "Fast, accurate CommonMark (Markdown) parser and renderer")
-    (description
-     "This package provides Haskell bindings for
-@uref{https://github.com/jgm/cmark, libcmark}, the reference parser for
-CommonMark, a fully specified variant of Markdown.  It includes bundled libcmark
-sources, and does not require prior installation of the C library.")
-    (license license:bsd-3)))
-
-(define-public ghc-cmark-gfm
-  (package
-    (name "ghc-cmark-gfm")
-    (version "0.1.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "cmark-gfm/cmark-gfm-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "13b0mqks5c1q989slgsa3ixr5vvkfyic4ynzgv00kgl5qrs7hqk7"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)))
-    (home-page "https://github.com/kivikakk/cmark-gfm-hs")
-    (synopsis
-     "Fast, accurate GitHub Flavored Markdown parser and renderer")
-    (description
-     "This package provides Haskell bindings for libcmark-gfm, the reference
-parser for GitHub Flavored Markdown, a fully specified variant of Markdown.
-It includes sources for libcmark-gfm and does not require prior installation
-of the C library.")
-    (license license:bsd-3)))
-
-(define-public ghc-executable-path
-  (package
-    (name "ghc-executable-path")
-    (version "0.0.3.1")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "executable-path/executable-path-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "0vxwmnsvx13cawcyhbyljkds0l1vr996ijldycx7nj0asjv45iww"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/executable-path")
-    (synopsis "Find out the full path of the executable")
-    (description
-     "The documentation of @code{System.Environment.getProgName} says that
-\"However, this is hard-to-impossible to implement on some non-Unix OSes, so
-instead, for maximum portability, we just return the leafname of the program
-as invoked.\" This library tries to provide the missing path.")
-    (license license:public-domain)))
-
-(define-public ghc-enclosed-exceptions
-  (package
-    (name "ghc-enclosed-exceptions")
-    (version "1.0.3")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "enclosed-exceptions/enclosed-exceptions-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "1fghjj7nkiddrf03ks8brjpr5x25yi9fs7xg6adbi4mc2gqr6vdg"))))
-    (build-system haskell-build-system)
-    ;; FIXME: one of the tests blocks forever:
-    ;; "thread blocked indefinitely in an MVar operation"
-    (arguments '(#:tests? #f))
-    (inputs
-     `(("ghc-lifted-base" ,ghc-lifted-base)
-       ("ghc-monad-control" ,ghc-monad-control)
-       ("ghc-async" ,ghc-async)
-       ("ghc-transformers-base" ,ghc-transformers-base)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/jcristovao/enclosed-exceptions")
-    (synopsis "Catch all exceptions from within an enclosed computation")
-    (description
-     "This library implements a technique to catch all exceptions raised
-within an enclosed computation, while remaining responsive to (external)
-asynchronous exceptions.")
-    (license license:expat)))
-
-(define-public ghc-th-abstraction
-  (package
-    (name "ghc-th-abstraction")
-    (version "0.2.8.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "th-abstraction/th-abstraction-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0n17w4q2ykd0nica4sck2wng6md56rfad8x0icl0l8vnzb9nn4ya"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/glguy/th-abstraction")
-    (synopsis "Nicer interface for reified information about data types")
-    (description
-     "This package normalizes variations in the interface for inspecting
-datatype information via Template Haskell so that packages and support a
-single, easier to use informational datatype while supporting many versions of
-Template Haskell.")
-    (license license:isc)))
-
-(define-public ghc-th-lift
-  (package
-    (name "ghc-th-lift")
-    (version "0.7.11")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "th-lift/th-lift-" version ".tar.gz"))
-              (sha256
-               (base32
-                "131360zxb0hazbqwbkk6ab2p77jkxr79bwwm618mrwrwkm3x2g6m"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-th-abstraction" ,ghc-th-abstraction)))
-    (home-page "https://github.com/mboes/th-lift")
-    (synopsis "Derive Template Haskell's Lift class for datatypes")
-    (description
-     "This is a Haskell library to derive Template Haskell's Lift class for
-datatypes.")
-    (license license:bsd-3)))
-
-(define-public ghc-th-lift-instances
-  (package
-    (name "ghc-th-lift-instances")
-    (version "0.1.11")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "th-lift-instances/th-lift-instances-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1f56cp6ckcalld5jchv0kxpjkwcsixd7smd0g7r8cg67ppx6m90x"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-th-lift" ,ghc-th-lift)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/bennofs/th-lift-instances/")
-    (synopsis "Lift instances for template-haskell for common data types.")
-    (description "Most data types in the Haskell platform do not have Lift
-instances.  This package provides orphan instances for @code{containers},
-@code{text}, @code{bytestring} and @code{vector}.")
-    (license license:bsd-3)))
-
-(define-public ghc-th-expand-syns
-  (package
-    (name "ghc-th-expand-syns")
-    (version "0.4.4.0")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "th-expand-syns/th-expand-syns-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "01prlvh3py5hq5ccjidfyp9ixq2zd88dkbsidyjrpkja6v8m43yc"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-syb" ,ghc-syb)))
-    (home-page "https://hackage.haskell.org/package/th-expand-syns")
-    (synopsis "Expands type synonyms in Template Haskell ASTs")
-    (description
-     "This package enables users to expand type synonyms in Template Haskell
-@dfn{abstract syntax trees} (ASTs).")
-    (license license:bsd-3)))
-
-(define-public ghc-th-reify-many
-  (package
-    (name "ghc-th-reify-many")
-    (version "0.1.8")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "th-reify-many/th-reify-many-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "0hzy6hvhvcd6i60vx5cp2b7ggmnnjh9rx4h8bm8xw4grglcaxjnf"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-safe" ,ghc-safe)
-       ("ghc-th-expand-syns" ,ghc-th-expand-syns)))
-    (home-page "https://github.com/mgsloan/th-reify-many")
-    (synopsis "Recurseively reify template haskell datatype info")
-    (description
-     "th-reify-many provides functions for recursively reifying top level
-declarations.  The main intended use case is for enumerating the names of
-datatypes reachable from an initial datatype, and passing these names to some
-function which generates instances.")
-    (license license:bsd-3)))
-
-(define-public ghc-th-orphans
-  (package
-    (name "ghc-th-orphans")
-    (version "0.13.6")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "th-orphans/th-orphans-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0sfl3pn9kq9da3ji3lsgzgzy82vz6yvsg80dmakc1jvk7awycibp"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-th-lift" ,ghc-th-lift)
-       ("ghc-th-lift-instances" ,ghc-th-lift-instances)
-       ("ghc-th-reify-many" ,ghc-th-reify-many)
-       ("ghc-generic-deriving" ,ghc-generic-deriving)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)))
-    (home-page "https://hackage.haskell.org/package/th-orphans")
-    (synopsis "Orphan instances for TH datatypes")
-    (description
-     "This package provides orphan instances for Template Haskell datatypes.  In particular,
-instances for @code{Ord} and @code{Lift}, as well as a few missing @code{Show}
-and @code{Eq} instances.  These instances used to live in the haskell-src-meta
-package, and that's where the version number started.")
-    (license license:bsd-3)))
-
-(define-public ghc-geniplate-mirror
-  (package
-    (name "ghc-geniplate-mirror")
-    (version "0.7.6")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package"
-                           "/geniplate-mirror"
-                           "/geniplate-mirror-" version ".tar.gz"))
-       (sha256
-        (base32 "1y0m0bw5zpm1y1y6d9qmxj3swl8j8hlw1shxbr5awycf6k884ssb"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/danr/geniplate")
-    (synopsis "Use Template Haskell to generate Uniplate-like functions")
-    (description
-     "Use Template Haskell to generate Uniplate-like functions.  This is a
-maintained mirror of the @uref{https://hackage.haskell.org/package/geniplate,
-geniplate} package, written by Lennart Augustsson.")
-    (license license:bsd-3)))
-
-(define-public ghc-gitrev
-  (package
-    (name "ghc-gitrev")
-    (version "1.3.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/gitrev/gitrev-"
-                           version ".tar.gz"))
-       (sha256
-        (base32 "0cl3lfm6k1h8fxp2vxa6ihfp4v8igkz9h35iwyq2frzm4kdn96d8"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-base-compat" ,ghc-base-compat)))
-    (home-page "https://github.com/acfoltzer/gitrev")
-    (synopsis "Compile git revision info into Haskell projects")
-    (description
-     "This package provides some handy Template Haskell splices for including
-the current git hash and branch in the code of your project.  This is useful
-for including in panic messages, @command{--version} output, or diagnostic
-info for more informative bug reports.")
-    (license license:bsd-3)))
-
-(define-public ghc-haskell-src-meta
-  (package
-    (name "ghc-haskell-src-meta")
-    (version "0.8.0.3")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "haskell-src-meta/haskell-src-meta-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "08jq156zv4m0fjq6712n99c1jwxnpa6kj6sq8ch0r1l0a1ay6ww4"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
-       ("ghc-syb" ,ghc-syb)
-       ("ghc-th-orphans" ,ghc-th-orphans)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
-    (home-page "https://hackage.haskell.org/package/haskell-src-meta")
-    (synopsis "Parse source to template-haskell abstract syntax")
-    (description
-     "This package provides tools to parse Haskell sources to the
-template-haskell abstract syntax.")
-    (license license:bsd-3)))
-
-(define-public ghc-conduit
-  (package
-    (name "ghc-conduit")
-    (version "1.3.0.3")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "conduit/conduit-" version ".tar.gz"))
-              (sha256
-               (base32
-                "1sangm0qqi9dzlq95746a3kl14k8b09592a423shxjf2a0b1yx5v"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-lifted-base" ,ghc-lifted-base)
-       ("ghc-mono-traversable" ,ghc-mono-traversable)
-       ("ghc-mmorph" ,ghc-mmorph)
-       ("ghc-resourcet" ,ghc-resourcet)
-       ("ghc-silently" ,ghc-silently)
-       ("ghc-transformers-base" ,ghc-transformers-base)
-       ("ghc-unliftio" ,ghc-unliftio)
-       ("ghc-unliftio-core" ,ghc-unliftio-core)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-void" ,ghc-void)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-safe" ,ghc-safe)
-       ("ghc-split" ,ghc-split)))
-    (home-page "https://github.com/snoyberg/conduit")
-    (synopsis "Streaming data library ")
-    (description
-     "The conduit package is a solution to the streaming data problem,
-allowing for production, transformation, and consumption of streams of data
-in constant memory.  It is an alternative to lazy I/O which guarantees
-deterministic resource handling, and fits in the same general solution
-space as enumerator/iteratee and pipes.")
-    (license license:expat)))
-
-(define-public ghc-logging-facade
-  (package
-    (name "ghc-logging-facade")
-    (version "0.3.0")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "logging-facade/logging-facade-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "0d0lwxxgd16is9aw6v3ps4r9prv3dj8xscmm45fvzq3nicjiawcf"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://hackage.haskell.org/package/logging-facade")
-    (synopsis "Simple logging abstraction that allows multiple back-ends")
-    (description
-     "This package provides a simple logging abstraction that allows multiple
-back-ends.")
-    (license license:expat)))
-
-(define-public ghc-mockery
-  (package
-    (name "ghc-mockery")
-    (version "0.3.5")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "mockery/mockery-" version ".tar.gz"))
-              (sha256
-               (base32
-                "09ypgm3z69gq8mj6y66ss58kbjnk15r8frwcwbqcfbfksfnfv8dp"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-temporary" ,ghc-temporary)
-       ("ghc-logging-facade" ,ghc-logging-facade)
-       ("ghc-base-compat" ,ghc-base-compat)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://hackage.haskell.org/package/mockery")
-    (synopsis "Support functions for automated testing")
-    (description
-     "The mockery package provides support functions for automated testing.")
-    (license license:expat)))
-
-(define-public ghc-yaml
-  (package
-    (name "ghc-yaml")
-    (version "0.8.32")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "yaml/yaml-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0cbsyh4ilvjzq1q7pxls43k6pdqxg1l85xzibcwpbvmlvrizh86w"))))
-    (build-system haskell-build-system)
-    ;; The tests are broken on i686.  They are fixed in 0.10.3.0.
-    ;; See https://github.com/snoyberg/yaml/issues/158
-    (arguments `(#:tests? #f))
-    (inputs
-     `(("ghc-conduit" ,ghc-conduit)
-       ("ghc-resourcet" ,ghc-resourcet)
-       ("ghc-aeson" ,ghc-aeson)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-attoparsec" ,ghc-attoparsec)
-       ("ghc-scientific" ,ghc-scientific)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-temporary" ,ghc-temporary)
-       ("ghc-enclosed-exceptions" ,ghc-enclosed-exceptions)
-       ("ghc-base-compat" ,ghc-base-compat)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("ghc-hunit" ,ghc-hunit)
-       ("hspec-discover" ,hspec-discover)
-       ("ghc-mockery" ,ghc-mockery)))
-    (home-page "https://github.com/snoyberg/yaml/")
-    (synopsis "Parsing and rendering YAML documents")
-    (description
-     "This package provides a library to parse and render YAML documents.")
-    (license license:bsd-3)))
-
-(define-public ghc-filemanip
-  (package
-    (name "ghc-filemanip")
-    (version "0.3.6.3")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "filemanip/filemanip-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0ilqr8jv41zxcj5qyicg29m8s30b9v70x6f9h2h2rw5ap8bxldl8"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-unix-compat" ,ghc-unix-compat)))
-    (home-page "https://github.com/bos/filemanip")
-    (synopsis "File and directory manipulation for Haskell")
-    (description
-     "This package provides a Haskell library for working with files and
-directories.  It includes code for pattern matching, finding files, modifying
-file contents, and more.")
-    (license license:bsd-3)))
-
-(define-public ghc-mmap
-  (package
-    (name "ghc-mmap")
-    (version "0.5.9")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "mmap/mmap-" version ".tar.gz"))
-              (sha256
-               (base32
-                "1y5mk3yf4b8r6rzmlx1xqn4skaigrqnv08sqq0v7r3nbw42bpz2q"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/mmap")
-    (synopsis "Memory mapped files for Haskell")
-    (description
-     "This library provides a wrapper to @code{mmap}, allowing files or
-devices to be lazily loaded into memory as strict or lazy @code{ByteStrings},
-@code{ForeignPtrs} or plain @code{Ptrs}, using the virtual memory subsystem to
-do on-demand loading.")
-    (license license:bsd-3)))
-
-(define-public ghc-juicypixels
-  (package
-    (name "ghc-juicypixels")
-    (version "3.2.9.5")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "JuicyPixels/JuicyPixels-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "0mf3ihr0xy2wc2wzb9a17g0n3p60x7pvm8akwpvhdy8klvs6r744"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-zlib" ,ghc-zlib)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-primitive" ,ghc-primitive)
-       ("ghc-mmap" ,ghc-mmap)))
-    (home-page "https://github.com/Twinside/Juicy.Pixels")
-    (synopsis "Picture loading and serialization library")
-    (description
-     "This library can load and store images in PNG, Bitmap, JPEG, Radiance,
-TIFF and GIF formats.")
-    (license license:bsd-3)))
-
-(define-public ghc-hslua
-  (package
-    (name "ghc-hslua")
-    (version "0.9.5.2")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "hslua/hslua-" version ".tar.gz"))
-              (sha256
-               (base32
-                "1rdvv01p214zfjh6fcqjjgqwi8y42wad6cqzhlcv5gvclzw2ck8f"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:configure-flags '("-fsystem-lua")))
-    (inputs
-     `(("lua" ,lua)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-fail" ,ghc-fail)))
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-expected-failure" ,ghc-tasty-expected-failure)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)))
-    (home-page "https://hackage.haskell.org/package/hslua")
-    (synopsis "Lua language interpreter embedding in Haskell")
-    (description
-     "The Scripting.Lua module is a wrapper of the Lua language interpreter as
-described in @url{https://www.lua.org/}.")
-    (license license:expat)))
-
-(define-public ghc-hslua-module-text
-  (package
-    (name "ghc-hslua-module-text")
-    (version "0.1.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "hslua-module-text/hslua-module-text-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0bcfpb1dhnxp0gr376ai4w7vczr9zrjl1r3r6w7kcxivfkwq9cxf"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("1" "0vajlsd7y6pwa08635q0cx8z5c1c55bk7fvavw7g2vmyvxqjzx6n")))
-    (inputs
-     `(("ghc-hslua" ,ghc-hslua)))
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
-    (home-page "https://github.com/hslua/hslua-module-text")
-    (synopsis "Lua module for text")
-    (description
-     "This package provides a UTF-8 aware subset of Lua's @code{string} module
-for Haskell.  The functions provided by this module are @code{upper},
-@code{lower}, @code{len}, @code{reverse}, and @code{sub}.")
-    (license license:expat)))
-
-(define-public ghc-byteable
-  (package
-    (name "ghc-byteable")
-    (version "0.1.1")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "byteable/byteable-" version ".tar.gz"))
-              (sha256
-               (base32
-                "1qizg0kxxjqnd3cbrjhhidk5pbbciz0pb3z5kzikjjxnnnhk8fr4"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/vincenthz/hs-byteable")
-    (synopsis "Type class for sequence of bytes")
-    (description
-     "This package provides an abstract class to manipulate sequence of bytes.
-The use case of this class is abstracting manipulation of types that are just
-wrapping a bytestring with stronger and more meaniful name.")
-    (license license:bsd-3)))
-
-(define-public ghc-hourglass
-  (package
-    (name "ghc-hourglass")
-    (version "0.2.12")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "hourglass/hourglass-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0jnay5j13vpz6i1rkaj3j0d9v8jfpri499xn3l7wd01f81f5ncs4"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-old-locale" ,ghc-old-locale)))
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
-    (home-page "https://github.com/vincenthz/hs-hourglass")
-    (synopsis "Simple time-related library for Haskell")
-    (description
-     "This is a simple time library providing a simple but powerful and
-performant API.  The backbone of the library are the @code{Timeable} and
-@code{Time} type classes.  Each @code{Timeable} instances can be converted to
-a type that has a @code{Time} instances, and thus are different
-representations of current time.")
-    (license license:bsd-3)))
-
-(define-public ghc-edit-distance
-  (package
-    (name "ghc-edit-distance")
-    (version "0.2.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/edit-distance"
-                           "/edit-distance-" version ".tar.gz"))
-       (sha256
-        (base32 "0jkca97zyv23yyilp3jydcrzxqhyk27swhzh82llvban5zp8b21y"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "edit-distance.cabal"
-               (("QuickCheck >= 2\\.4 && <2\\.9")
-                "QuickCheck >= 2.4 && < 2.12")))))))
-    (inputs
-     `(("ghc-random" ,ghc-random)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://github.com/phadej/edit-distance")
-    (synopsis "Levenshtein and restricted Damerau-Levenshtein edit distances")
-    (description
-     "This package provides optimized functions to determine the edit
-distances for fuzzy matching, including Levenshtein and restricted
-Damerau-Levenshtein algorithms.")
-    (license license:bsd-3)))
-
-(define-public ghc-memory
-  (package
-    (name "ghc-memory")
-    (version "0.14.16")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "memory/memory-" version ".tar.gz"))
-              (sha256
-               (base32
-                "03rbszi5d4z9rlbfv8ydrl1xf84xsh8z57g07f7j9qccn9587c3v"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-basement" ,ghc-basement)
-       ("ghc-foundation" ,ghc-foundation)))
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
-    (home-page "https://github.com/vincenthz/hs-memory")
-    (synopsis "Memory abstractions for Haskell")
-    (description
-     "This package provides memory abstractions, such as chunk of memory,
-polymorphic byte array management and manipulation functions.  It contains a
-polymorphic byte array abstraction and functions similar to strict ByteString,
-different type of byte array abstraction, raw memory IO operations (memory
-set, memory copy, ..) and more")
-    (license license:bsd-3)))
-
-(define-public ghc-socks
-  (package
-    (name "ghc-socks")
-    (version "0.5.6")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "socks/socks-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0f44qy74i0n6ll3jym0a2ipafkpw1h67amcpqmj8iq95h21wsqzs"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-cereal" ,ghc-cereal)
-       ("ghc-network" ,ghc-network)))
-    (home-page "https://github.com/vincenthz/hs-socks")
-    (synopsis "SOCKS proxy (version 5) implementation")
-    (description
-     "This library provides a SOCKS proxy (version 5) implementation.")
-    (license license:bsd-3)))
-
-(define-public ghc-connection
-  (package
-    (name "ghc-connection")
-    (version "0.2.8")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "connection/connection-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "1swkb9w5vx9ph7x55y51dc0srj2z27nd9ibgn8c0qcl6hx7g9cbh"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-byteable" ,ghc-byteable)
-       ("ghc-data-default-class" ,ghc-data-default-class)
-       ("ghc-network" ,ghc-network)
-       ("ghc-tls" ,ghc-tls)
-       ("ghc-socks" ,ghc-socks)
-       ("ghc-x509" ,ghc-x509)
-       ("ghc-x509-store" ,ghc-x509-store)
-       ("ghc-x509-system" ,ghc-x509-system)
-       ("ghc-x509-validation" ,ghc-x509-validation)))
-    (home-page "https://github.com/vincenthz/hs-connection")
-    (synopsis "Simple and easy network connections API")
-    (description
-     "This package provides a simple network library for all your connection
-needs.  It provides a very simple API to create sockets to a destination with
-the choice of SSL/TLS, and SOCKS.")
-    (license license:bsd-3)))
-
-(define-public ghc-skylighting-core
-  (package
-    (name "ghc-skylighting-core")
-    (version "0.7.2")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "skylighting-core/skylighting-core-"
-                                  version ".tar.gz"))
-              (sha256
-               (base32
-                "066fwmwsd7xcvwlinfk2izlzq0xp8697i6lnbgsbl71jdybyackq"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-aeson" ,ghc-aeson)
-       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
-       ("ghc-attoparsec" ,ghc-attoparsec)
-       ("ghc-base64-bytestring" ,ghc-base64-bytestring)
-       ("ghc-blaze-html" ,ghc-blaze-html)
-       ("ghc-case-insensitive" ,ghc-case-insensitive)
-       ("ghc-colour" ,ghc-colour)
-       ("ghc-hxt" ,ghc-hxt)
-       ("ghc-regex-pcre-builtin" ,ghc-regex-pcre-builtin)
-       ("ghc-safe" ,ghc-safe)
-       ("ghc-utf8-string" ,ghc-utf8-string)))
-    (native-inputs
-     `(("ghc-diff" ,ghc-diff)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-pretty-show" ,ghc-pretty-show)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-golden" ,ghc-tasty-golden)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
-    (home-page "https://github.com/jgm/skylighting")
-    (synopsis "Syntax highlighting library")
-    (description "Skylighting is a syntax highlighting library with support
-for over one hundred languages.  It derives its tokenizers from XML syntax
-definitions used by KDE's @code{KSyntaxHighlighting} framework, so any syntax
-supported by that framework can be added.  An optional command-line program is
-provided.  Skylighting is intended to be the successor to highlighting-kate.")
-    (license license:gpl2)))
-
-(define-public ghc-skylighting
-  (package
-    (inherit ghc-skylighting-core)
-    (name "ghc-skylighting")
-    (version "0.7.2")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/skylighting-"
-                                  version "/skylighting-" version ".tar.gz"))
-              (sha256
-               (base32
-                "1rh3z1a7a4clvksdw1qlpmhxqkfahwypi70k91whgfamzsqpxdch"))))
-    (inputs
-     `(("ghc-skylighting-core" ,ghc-skylighting-core)
-       ,@(package-inputs ghc-skylighting-core)))))
-
-(define-public ghc-doctemplates
-  (package
-    (name "ghc-doctemplates")
-    (version "0.2.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "doctemplates/doctemplates-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1gyckfg3kgvzhxw14i7iwrw0crygvsp86sy53bbr1yn7bxbgn33b"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-aeson" ,ghc-aeson)
-       ("ghc-blaze-markup" ,ghc-blaze-markup)
-       ("ghc-blaze-html" ,ghc-blaze-html)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-scientific" ,ghc-scientific)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)))
-    (home-page "https://github.com/jgm/doctemplates#readme")
-    (synopsis "Pandoc-style document templates")
-    (description
-     "This package provides a simple text templating system used by pandoc.")
-    (license license:bsd-3)))
-
-(define-public ghc-pandoc
-  (package
-    (name "ghc-pandoc")
-    (version "2.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/pandoc/pandoc-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1dqin92w513l7whg5wdgrngnxsj5mb8gppfvn7kjgyv2pdgpy0zy"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "pandoc.cabal"
-               (("tasty >= 0\\.11 && < 1\\.1")
-                "tasty >= 0.11 && < 1.1.1"))))
-         (add-before 'configure 'patch-tests
-           (lambda _
-             ;; These tests fail benignly and have been adjusted upstream:
-             ;; <https://github.com/commercialhaskell/stackage/issues/3719>.
-             (substitute* "test/Tests/Old.hs"
-               (("lhsWriterTests \"html\"") "[]")))))))
-    (inputs
-     `(("ghc-aeson" ,ghc-aeson)
-       ("ghc-aeson-pretty" ,ghc-aeson-pretty)
-       ("ghc-base64-bytestring" ,ghc-base64-bytestring)
-       ("ghc-blaze-html" ,ghc-blaze-html)
-       ("ghc-blaze-markup" ,ghc-blaze-markup)
-       ("ghc-cmark-gfm" ,ghc-cmark-gfm)
-       ("ghc-data-default" ,ghc-data-default)
-       ("ghc-deepseq-generics" ,ghc-deepseq-generics)
-       ("ghc-diff" ,ghc-diff)
-       ("ghc-doctemplates" ,ghc-doctemplates)
-       ("ghc-executable-path" ,ghc-executable-path)
-       ("ghc-glob" ,ghc-glob)
-       ("ghc-haddock-library" ,ghc-haddock-library)
-       ("ghc-hslua" ,ghc-hslua)
-       ("ghc-hslua-module-text" ,ghc-hslua-module-text)
-       ("ghc-http" ,ghc-http)
-       ("ghc-http-client" ,ghc-http-client)
-       ("ghc-http-client-tls" ,ghc-http-client-tls)
-       ("ghc-http-types" ,ghc-http-types)
-       ("ghc-juicypixels" ,ghc-juicypixels)
-       ("ghc-network" ,ghc-network)
-       ("ghc-network-uri" ,ghc-network-uri)
-       ("ghc-old-locale" ,ghc-old-locale)
-       ("ghc-pandoc-types" ,ghc-pandoc-types)
-       ("ghc-random" ,ghc-random)
-       ("ghc-scientific" ,ghc-scientific)
-       ("ghc-sha" ,ghc-sha)
-       ("ghc-skylighting" ,ghc-skylighting)
-       ("ghc-split" ,ghc-split)
-       ("ghc-syb" ,ghc-syb)
-       ("ghc-tagsoup" ,ghc-tagsoup)
-       ("ghc-temporary" ,ghc-temporary)
-       ("ghc-texmath" ,ghc-texmath)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-xml" ,ghc-xml)
-       ("ghc-yaml" ,ghc-yaml)
-       ("ghc-zip-archive" ,ghc-zip-archive)
-       ("ghc-zlib" ,ghc-zlib)))
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-golden" ,ghc-tasty-golden)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hunit" ,ghc-hunit)))
-    (home-page "https://pandoc.org")
-    (synopsis "Conversion between markup formats")
-    (description
-     "Pandoc is a Haskell library for converting from one markup format to
-another, and a command-line tool that uses this library.  It can read and
-write Markdown and (subsets of) other formats, such as HTML, reStructuredText,
-LaTeX, DocBook, and many more.
-
-Pandoc extends standard Markdown syntax with footnotes, embedded LaTeX,
-definition lists, tables, and other features.  A compatibility mode is
-provided for those who need a drop-in replacement for Markdown.pl.")
-    (license license:gpl2+)))
-
-(define-public ghc-hs-bibutils
-  (package
-    (name "ghc-hs-bibutils")
-    (version "6.6.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/hs-bibutils/hs-bibutils-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0n2sz2zl4naspryd49ii858qkjp2lapns5a2gr8zm6vvn5sh1f0l"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-syb" ,ghc-syb)))
-    (home-page "https://hackage.haskell.org/package/hs-bibutils")
-    (synopsis "Haskell bindings to bibutils")
-    (description
-     "This package provides Haskell bindings to @code{bibutils}, a library
-that interconverts between various bibliography formats using a common
-MODS-format XML intermediate.")
-    (license license:gpl2+)))
-
-(define-public ghc-rfc5051
-  (package
-    (name "ghc-rfc5051")
-    (version "0.1.0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/rfc5051/"
-                           "rfc5051-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0av4c3qvwbkbzrjrrg601ay9pds7wscqqp2lc2z78mv2lllap3g3"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/rfc5051")
-    (synopsis "Simple unicode collation as per RFC5051")
-    (description
-     "This library implements @code{unicode-casemap}, the simple, non
-locale-sensitive unicode collation algorithm described in RFC 5051.  Proper
-unicode collation can be done using @code{text-icu}, but that is a big
-dependency that depends on a large C library, and @code{rfc5051} might be
-better for some purposes.")
-    (license license:bsd-3)))
-
-(define-public ghc-typed-process
-  (package
-    (name "ghc-typed-process")
-    (version "0.2.3.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "typed-process/typed-process-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0j36vrc9w841m5qbwqra1lwiznx31xfnhin1sm8x2c2739csbpn0"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-async" ,ghc-async)))
-    (native-inputs
-     `(("ghc-base64-bytestring" ,ghc-base64-bytestring)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)
-       ("ghc-temporary" ,ghc-temporary)))
-    (home-page "https://haskell-lang.org/library/typed-process")
-    (synopsis "Run external processes with strong typing of streams")
-    (description
-     "This library provides the ability to launch and interact with external
-processes.  It wraps around the @code{process} library, and intends to improve
-upon it.")
-    (license license:expat)))
-
-(define-public ghc-conduit-extra
-  (package
-    (name "ghc-conduit-extra")
-    (version "1.3.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "conduit-extra/conduit-extra-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0jaj350vv6mbb26gdwcqz4gwzfzrjydv5pis2da49wz1npbakcfw"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-conduit" ,ghc-conduit)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-monad-control" ,ghc-monad-control)
-       ("ghc-transformers-base" ,ghc-transformers-base)
-       ("ghc-typed-process" ,ghc-typed-process)
-       ("ghc-async" ,ghc-async)
-       ("ghc-attoparsec" ,ghc-attoparsec)
-       ("ghc-blaze-builder" ,ghc-blaze-builder)
-       ("ghc-network" ,ghc-network)
-       ("ghc-primitive" ,ghc-primitive)
-       ("ghc-resourcet" ,ghc-resourcet)
-       ("ghc-streaming-commons" ,ghc-streaming-commons)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-bytestring-builder" ,ghc-bytestring-builder)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (native-inputs
-     `(("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/snoyberg/conduit")
-    (synopsis "Conduit adapters for common libraries")
-    (description
-     "The @code{conduit} package itself maintains relative small dependencies.
-The purpose of this package is to collect commonly used utility functions
-wrapping other library dependencies, without depending on heavier-weight
-dependencies.  The basic idea is that this package should only depend on
-@code{haskell-platform} packages and @code{conduit}.")
-    (license license:expat)))
-
-(define-public ghc-xml-types
-  (package
-    (name "ghc-xml-types")
-    (version "0.3.6")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/xml-types/"
-                           "xml-types-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1jgqxsa9p2q3h6nymbfmvhldqrqlwrhrzmwadlyc0li50x0d8dwr"))))
-    (build-system haskell-build-system)
-    (home-page "https://john-millikin.com/software/haskell-xml/")
-    (synopsis "Basic types for representing XML")
-    (description "This package provides basic types for representing XML
-documents.")
-    (license license:expat)))
-
-(define-public ghc-xml-conduit
-  (package
-    (name "ghc-xml-conduit")
-    (version "1.8.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/xml-conduit/"
-                           "xml-conduit-" version ".tar.gz"))
-       (sha256
-        (base32
-         "177gmyigxql1pn3ncz0r8annwv5cbxnihbgrrg1dhm4gmc9jy2wq"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-conduit" ,ghc-conduit)
-       ("ghc-conduit-extra" ,ghc-conduit-extra)
-       ("ghc-doctest" ,ghc-doctest)
-       ("ghc-resourcet" ,ghc-resourcet)
-       ("ghc-xml-types" ,ghc-xml-types)
-       ("ghc-attoparsec" ,ghc-attoparsec)
-       ("ghc-data-default-class" ,ghc-data-default-class)
-       ("ghc-blaze-markup" ,ghc-blaze-markup)
-       ("ghc-blaze-html" ,ghc-blaze-html)
-       ("ghc-monad-control" ,ghc-monad-control)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-hunit" ,ghc-hunit)))
-    (home-page "https://github.com/snoyberg/xml")
-    (synopsis "Utilities for dealing with XML with the conduit package")
-    (description
-     "This package provides pure-Haskell utilities for dealing with XML with
-the @code{conduit} package.")
-    (license license:expat)))
-
-(define-public ghc-pandoc-citeproc
-  (package
-    (name "ghc-pandoc-citeproc")
-    (version "0.14.3.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "pandoc-citeproc/pandoc-citeproc-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0yj6rckwsc9vig40cm15ry0j3d01xpk04qma9n4byhal6v4b5h22"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         ;; Many YAML tests (44) are failing do to changes in ghc-yaml:
-         ;; <https://github.com/jgm/pandoc-citeproc/issues/342>.
-         (add-before 'configure 'patch-tests
-           (lambda _
-             (substitute* "tests/test-pandoc-citeproc.hs"
-               (("let allTests = citeprocTests \\+\\+ biblio2yamlTests")
-                "let allTests = citeprocTests"))))
-         ;; Tests need to be run after installation.
-         (delete 'check)
-         (add-after 'install 'post-install-check
-           (assoc-ref %standard-phases 'check)))))
-    (inputs
-     `(("ghc-pandoc-types" ,ghc-pandoc-types)
-       ("ghc-pandoc" ,ghc-pandoc)
-       ("ghc-tagsoup" ,ghc-tagsoup)
-       ("ghc-aeson" ,ghc-aeson)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-xml-conduit" ,ghc-xml-conduit)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-data-default" ,ghc-data-default)
-       ("ghc-setenv" ,ghc-setenv)
-       ("ghc-split" ,ghc-split)
-       ("ghc-yaml" ,ghc-yaml)
-       ("ghc-hs-bibutils" ,ghc-hs-bibutils)
-       ("ghc-rfc5051" ,ghc-rfc5051)
-       ("ghc-syb" ,ghc-syb)
-       ("ghc-old-locale" ,ghc-old-locale)
-       ("ghc-aeson-pretty" ,ghc-aeson-pretty)
-       ("ghc-attoparsec" ,ghc-attoparsec)
-       ("ghc-temporary" ,ghc-temporary)))
-    (home-page "https://github.com/jgm/pandoc-citeproc")
-    (synopsis "Library for using pandoc with citeproc")
-    (description
-     "The @code{pandoc-citeproc} library exports functions for using the
-citeproc system with pandoc.  It relies on @code{citeproc-hs}, a library for
-rendering bibliographic reference citations into a variety of styles using a
-macro language called @dfn{Citation Style Language} (CSL).  This package also
-contains an executable @code{pandoc-citeproc}, which works as a pandoc filter,
-and also has a mode for converting bibliographic databases a YAML format
-suitable for inclusion in pandoc YAML metadata.")
-    (license license:bsd-3)))
-
-(define-public ghc-union-find
-  (package
-    (name "ghc-union-find")
-    (version "0.2")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://hackage.haskell.org/package/union-find/union-find-"
-                    version ".tar.gz"))
-              (sha256
-               (base32
-                "1v7hj42j9w6jlzi56jg8rh4p58gfs1c5dx30wd1qqvn0p0mnihp6"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/nominolo/union-find")
-    (synopsis "Efficient union and equivalence testing of sets")
-    (description
-     "The Union/Find algorithm implements these operations in (effectively)
-constant-time:
-@enumerate
-@item Check whether two elements are in the same equivalence class.
-@item Create a union of two equivalence classes.
-@item Look up the descriptor of the equivalence class.
-@end enumerate\n")
-    (license license:bsd-3)))
-
-(define-public ghc-base16-bytestring
-  (package
-    (name "ghc-base16-bytestring")
-    (version "0.1.1.6")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/base16-bytestring/"
-             "base16-bytestring-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0jf40m3yijqw6wd1rwwvviww46fasphaay9m9rgqyhf5aahnbzjs"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/bos/base16-bytestring")
-    (synopsis "Fast base16 (hex) encoding and decoding for ByteStrings")
-    (description
-     "This package provides a Haskell library for working with base16-encoded
-data quickly and efficiently, using the ByteString type.")
-    (license license:bsd-3)))
-
-(define-public ghc-data-ordlist
-  (package
-    (name "ghc-data-ordlist")
-    (version "0.4.7.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/data-ordlist/data-ordlist-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "03a9ix1fcx08viwv2jg5ndw1qbkydyyrmjvqr9wasmcik9x1wv3g"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/data-ordlist")
-    (synopsis "Set and bag operations on ordered lists")
-    (description
-     "This module provides set and multiset operations on ordered lists.")
-    (license license:bsd-3)))
-
-(define-public ghc-regex-applicative
-  (package
-    (name "ghc-regex-applicative")
-    (version "0.3.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/regex-applicative/"
-             "regex-applicative-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1riv7jqf26lbv4rm54sd6mrx8xdh4dvh4xbzymzdfdw13k6a4nb6"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-smallcheck" ,ghc-smallcheck)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-smallcheck" ,ghc-tasty-smallcheck)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
-    (home-page "https://github.com/feuerbach/regex-applicative")
-    (synopsis "Regex-based parsing with applicative interface")
-    (description
-     "@code{regex-applicative} is a Haskell library for parsing using
-regular expressions.  Parsers can be built using Applicative interface.")
-    (license license:expat)))
-
-(define-public ghc-regex-tdfa
-  (package
-    (name "ghc-regex-tdfa")
-    (version "1.2.3.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/regex-tdfa/regex-tdfa-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0l7ajnh4hpgggf2a1r9dg0hx2fy679vd2kada5y7r02hy3nfxala"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-regex-base" ,ghc-regex-base)))
-    (home-page "https://github.com/ChrisKuklewicz/regex-tdfa")
-    (synopsis "POSIX extended regular expressions in Haskell.")
-    (description
-     "Regex-tdfa is a pure Haskell regular expression library implementing POSIX
-extended regular expressions.  It is a \"tagged\" DFA regex engine. It is
-inspired by libtre.")
-    (license license:bsd-3)))
-
-(define-public ghc-regex-compat-tdfa
-  (package
-    (name "ghc-regex-compat-tdfa")
-    (version "0.95.1.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/regex-compat-tdfa/regex-compat-tdfa-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "1p90fn90yhp7fvljjdqjp41cszidcfz4pw7fwvzyx4739b98x8sg"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-regex-base" ,ghc-regex-base)
-       ("ghc-regex-tdfa" ,ghc-regex-tdfa)))
-    (home-page "https://hub.darcs.net/shelarcy/regex-compat-tdfa")
-    (synopsis "Unicode Support version of Text.Regex, using regex-tdfa")
-    (description
-     "One module layer over @code{regex-tdfa} to replace @code{Text.Regex}.
-@code{regex-compat} can't use Unicode characters correctly because of using regex-posix.
-This is not good for Unicode users.  This modified regex-compat uses regex-tdfa to solve
-this problem.")
-    (license license:bsd-3)))
-
-(define-public ghc-sandi
-  (package
-    (name "ghc-sandi")
-    (version "0.4.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/sandi/sandi-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0dvkpk91n9kz2ha04rvp231ra9sgd1ilyc1qkzf9l03iir7zrh9b"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-stringsearch" ,ghc-stringsearch)
-       ("ghc-conduit" ,ghc-conduit)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-       ("ghc-tasty-th" ,ghc-tasty-th)))
-    (home-page "https://hackage.haskell.org/package/sandi")
-    (synopsis "Data encoding library")
-    (description "Reasonably fast data encoding library.")
-    (license license:bsd-3)))
-
-(define-public ghc-bytestring-handle
-  (package
-    (name "ghc-bytestring-handle")
-    (version "0.1.0.6")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/bytestring-handle/bytestring-handle-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "18f17aja1ivhr3zyg2cccn2m03hdn5jf5410dndkhf12gvgiqs7y"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "bytestring-handle.cabal"
-               (("QuickCheck >= 2\\.1\\.2 && < 2\\.11")
-                "QuickCheck >= 2.1.2 && < 2.12")
-               (("base >= 4\\.2 && < 4\\.11")
-                "base >= 4.2 && < 4.12")))))))
-    (inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://hub.darcs.net/ganesh/bytestring-handle")
-    (synopsis "ByteString-backed Handles")
-    (description "ByteString-backed Handles") ; There is no description
-    (license license:bsd-3)))
-
-(define-public ghc-tar
-  (package
-    (name "ghc-tar")
-    (version "0.5.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/tar/tar-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0s2brvaxg5fki2jdkccmnpssiy6a3wjh24p6a3dkkdvjcixnk7f8"))))
-    (build-system haskell-build-system)
-    ;; FIXME: 2/24 tests fail.
-    (arguments `(#:tests? #f))
-    (inputs
-     `(("ghc-bytestring-handle" ,ghc-bytestring-handle)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
-    (home-page "https://hackage.haskell.org/package/tar")
-    (synopsis "Reading, writing and manipulating \".tar\" archive files")
-    (description
-     "This library is for working with \\\"@.tar@\\\" archive files.
-It can read and write a range of common variations of the tar archive format
-including V7, POSIX USTAR and GNU formats.  It provides support for packing and
-unpacking portable archives.  This makes it suitable for distribution but not
-backup because details like file ownership and exact permissions are not
-preserved.  It also provides features for random access to archive content using
-an index.")
-    (license license:bsd-3)))
-
-(define-public ghc-stmonadtrans
-  (package
-    (name "ghc-stmonadtrans")
-    (version "0.4.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/STMonadTrans"
-                           "/STMonadTrans-" version ".tar.gz"))
-       (sha256
-        (base32 "1nr26fnmi5fdjc6d00w13kjhmfyvb5b837d0006w4dj0yxndaksp"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/STMonadTrans")
-    (synopsis "Monad transformer version of the ST monad")
-    (description
-     "This package provides a monad transformer version of the @code{ST} monad
-for strict state threads.")
-    (license license:bsd-3)))
-
-(define-public ghc-findbin
-  (package
-    (name "ghc-findbin")
-    (version "0.0.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/FindBin/FindBin-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "197xvn05yysmibm1p5wzxfa256lvpbknr5d1l2ws6g40w1kpk717"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/audreyt/findbin")
-    (synopsis "Get the absolute path of the running program")
-    (description
-     "This module locates the full directory of the running program, to allow
-the use of paths relative to it.  FindBin supports invocation of Haskell
-programs via \"ghci\", via \"runhaskell/runghc\", as well as compiled as
-an executable.")
-    (license license:bsd-3)))
-
-(define-public ghc-patience
-  (package
-    (name "ghc-patience")
-    (version "0.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/patience/patience-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0qyv20gqy9pb1acy700ahv70lc6vprcwb26cc7fcpcs4scsc7irm"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/patience")
-    (synopsis "Patience diff and longest increasing subsequence")
-    (description
-     "This library implements the 'patience diff' algorithm, as well as the
-patience algorithm for the longest increasing subsequence problem.
-Patience diff computes the difference between two lists, for example the lines
-of two versions of a source file.  It provides a good balance between
-performance, nice output for humans, and simplicity of implementation.")
-    (license license:bsd-3)))
-
-(define-public ghc-monads-tf
-  (package
-    (name "ghc-monads-tf")
-    (version "0.1.0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/monads-tf/monads-tf-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "1wdhskwa6dw8qljbvwpyxj8ca6y95q2np7z4y4q6bpf4anmd5794"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/monads-tf")
-    (synopsis "Monad classes, using type families")
-    (description
-     "Monad classes using type families, with instances for various monad transformers,
-inspired by the paper 'Functional Programming with Overloading and Higher-Order
-Polymorphism', by Mark P Jones.  This package is almost a compatible replacement for
-the @code{mtl-tf} package.")
-    (license license:bsd-3)))
-
-(define-public ghc-colour
-(package
-  (name "ghc-colour")
-  (version "2.3.4")
-  (source
-   (origin
-     (method url-fetch)
-     (uri (string-append
-           "https://hackage.haskell.org/package/colour/colour-"
-           version ".tar.gz"))
-     (sha256
-      (base32
-       "1sy51nz096sv91nxqk6yk7b92b5a40axv9183xakvki2nc09yhqg"))))
-  (arguments
-   ;; The tests for this package have the following dependency cycle:
-   ;; ghc-test-framework -> ghc-ansi-terminal -> ghc-colour.
-   `(#:tests? #f))
-  (build-system haskell-build-system)
-  (home-page "https://www.haskell.org/haskellwiki/Colour")
-  (synopsis "Model for human colour perception")
-  (description
-   "This package provides a data type for colours and transparency.
-Colours can be blended and composed.  Various colour spaces are
-supported.  A module of colour names (\"Data.Colour.Names\") is provided.")
-  (license license:expat)))
-
-(define-public ghc-wl-pprint-text
-  (package
-    (name "ghc-wl-pprint-text")
-    (version "1.2.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/wl-pprint-text/wl-pprint-text-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0g3w92rad6x5appfb22rbzcas2ix2h0hy91sdxhq8a4a5cnlrpa0"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-base-compat" ,ghc-base-compat)))
-    (home-page "https://hackage.haskell.org/package/wl-pprint-text")
-    (synopsis "Wadler/Leijen Pretty Printer for Text values")
-    (description
-     "A clone of wl-pprint for use with the text library.")
-    (license license:bsd-3)))
-
-(define-public ghc-fgl-arbitrary
-  (package
-    (name "ghc-fgl-arbitrary")
-    (version "0.2.0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/fgl-arbitrary/fgl-arbitrary-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0ln1szgfy8fa78l3issq4fx3aqnnd54w3cb4wssrfi48vd5rkfjm"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "fgl-arbitrary.cabal"
-               (("QuickCheck >= 2\\.3 && < 2\\.10")
-                "QuickCheck >= 2.3 && < 2.12")
-               (("hspec >= 2\\.1 && < 2\\.5")
-                "hspec >= 2.1 && < 2.6")))))))
-    (inputs
-     `(("ghc-fgl" ,ghc-fgl)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hspec" ,ghc-hspec)))
-    (home-page "https://hackage.haskell.org/package/fgl-arbitrary")
-    (synopsis "QuickCheck support for fgl")
-    (description
-     "Provides Arbitrary instances for fgl graphs to avoid adding a
-QuickCheck dependency for fgl whilst still making the instances
-available to others.  Also available are non-fgl-specific functions
-for generating graph-like data structures.")
-    (license license:bsd-3)))
-
-(define-public ghc-graphviz
-  (package
-    (name "ghc-graphviz")
-    (version "2999.20.0.2")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://hackage.haskell.org/package/"
-                                  "graphviz/graphviz-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0kj7ap0gnliviq2p8lscw1m06capnsa90vpvcys24nqy5nw2wrp7"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-colour" ,ghc-colour)
-       ("ghc-dlist" ,ghc-dlist)
-       ("ghc-fgl" ,ghc-fgl)
-       ("ghc-fgl-arbitrary" ,ghc-fgl-arbitrary)
-       ("ghc-polyparse" ,ghc-polyparse)
-       ("ghc-temporary" ,ghc-temporary)
-       ("ghc-wl-pprint-text" ,ghc-wl-pprint-text)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("graphviz" ,graphviz)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://hackage.haskell.org/package/graphviz")
-    (synopsis "Bindings to Graphviz for graph visualisation")
-    (description
-     "This library provides bindings for the Dot language used by
-the @uref{https://graphviz.org/, Graphviz} suite of programs for
-visualising graphs, as well as functions to call those programs.
-Main features of the graphviz library include:
-
-@enumerate
-@item Almost complete coverage of all Graphviz attributes and syntax
-@item Support for specifying clusters
-@item The ability to use a custom node type
-@item Functions for running a Graphviz layout tool with all specified output types
-@item Generate and parse Dot code with two options: strict and liberal
-@item Functions to convert FGL graphs and other graph-like data structures
-@item Round-trip support for passing an FGL graph through Graphviz to augment node
-and edge labels with positional information, etc.
-@end enumerate\n")
-    (license license:bsd-3)))
-
-(define-public ghc-constraints
-  (package
-    (name "ghc-constraints")
-    (version "0.10.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/constraints/constraints-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "1xy3vv78jxc17hm0z7qqspxjwv7l2jbcbj670yrl2f053qkfr02q"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-hashable" ,ghc-hashable)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/ekmett/constraints/")
-    (synopsis "Constraint manipulation")
-    (description
-     "GHC 7.4 gave us the ability to talk about @code{ConstraintKinds}.
-They stopped crashing the compiler in GHC 7.6.  This package provides
-a vocabulary for working with them.")
-    (license license:bsd-3)))
-
-(define-public ghc-lifted-async
-  (package
-    (name "ghc-lifted-async")
-    (version "0.10.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/lifted-async/lifted-async-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "1073r512c1x2m1v0jar9bwqg656slg7jd1jhsyj6m8awgx1l1mwf"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-async" ,ghc-async)
-       ("ghc-lifted-base" ,ghc-lifted-base)
-       ("ghc-transformers-base" ,ghc-transformers-base)
-       ("ghc-monad-control" ,ghc-monad-control)
-       ("ghc-constraints" ,ghc-constraints)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-expected-failure" ,ghc-tasty-expected-failure)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-th" ,ghc-tasty-th)))
-    (home-page "https://github.com/maoe/lifted-async")
-    (synopsis "Run lifted IO operations asynchronously and wait for their results")
-    (description
-     "This package provides IO operations from @code{async} package lifted to any
-instance of @code{MonadBase} or @code{MonadBaseControl}.")
-    (license license:bsd-3)))
-
-;; Ghc-shelly depends on ghc-system-filepath and ghc-system-fileio, who in turn depend on
-;; ghc-chell and ghc-chell-quickcheck for the test phase. Ghc-chell depends on ghc-options
-;; which depends on ghc-chell and ghc-chell-quickcheck.
-;; Therefore we bootstrap it with tests disabled.
-(define ghc-system-filepath-bootstrap
-  (package
-    (name "ghc-system-filepath-bootstrap")
-    (version "0.4.14")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/system-filepath/system-filepath-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "14yras4pz2dh55xpwmazcgxijvi8913pjgzb9iw50mjq1lycwmhn"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:tests? #f))
-    (inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/fpco/haskell-filesystem")
-    (synopsis "High-level, byte-based file and directory path manipulations")
-    (description
-     "Provides a FilePath datatype and utility functions for operating on it.
-Unlike the filepath package, this package does not simply reuse String,
-increasing type safety.")
-    (license license:expat)))
-
-;; See ghc-system-filepath-bootstrap. In addition this package depends on
-;; ghc-system-filepath.
-(define ghc-system-fileio-bootstrap
-  (package
-    (name "ghc-system-fileio-bootstrap")
-    (version "0.3.16.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/system-fileio/system-fileio-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "1484hcl27s2qcby8ws5djj11q9bz68bspcifz9h5gii2ndy70x9i"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:tests? #f))
-    (inputs
-     `(("ghc-system-filepath-bootstrap" ,ghc-system-filepath-bootstrap)
-       ("ghc-temporary" ,ghc-temporary)))
-    (home-page "https://github.com/fpco/haskell-filesystem")
-    (synopsis "Consistent file system interaction across GHC versions")
-    (description
-     "This is a small wrapper around the directory, unix, and Win32 packages,
-for use with system-filepath.  It provides a consistent API to the various
-versions of these packages distributed with different versions of GHC.
-In particular, this library supports working with POSIX files that have paths
-which can't be decoded in the current locale encoding.")
-    (license license:expat)))
-
-(define-public ghc-shelly
-  (package
-    (name "ghc-shelly")
-    (version "1.8.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/shelly/shelly-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "023fbvbqs5gdwm30j5517gbdcc7fvz0md70dgwgpypkskj3i926y"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-unix-compat" ,ghc-unix-compat)
-       ("ghc-system-filepath-bootstrap" ,ghc-system-filepath-bootstrap)
-       ("ghc-system-fileio-bootstrap" ,ghc-system-fileio-bootstrap)
-       ("ghc-monad-control" ,ghc-monad-control)
-       ("ghc-lifted-base" ,ghc-lifted-base)
-       ("ghc-lifted-async" ,ghc-lifted-async)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-enclosed-exceptions" ,ghc-enclosed-exceptions)
-       ("ghc-async" ,ghc-async)
-       ("ghc-transformers-base" ,ghc-transformers-base)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-hspec-contrib" ,ghc-hspec-contrib)))
-    (home-page "https://github.com/yesodweb/Shelly.hs")
-    (synopsis "Shell-like (systems) programming in Haskell")
-    (description
-     "Shelly provides convenient systems programming in Haskell, similar in
-spirit to POSIX shells.  Shelly is originally forked  from the Shellish package.")
-    (license license:bsd-3)))
-
-;; See ghc-system-filepath-bootstrap, chell and chell-quickcheck are required for tests.
-(define ghc-options-bootstrap
-  (package
-    (name "ghc-options-bootstrap")
-    (version "1.2.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/options/options-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0qjs0v1ny52w51n5582d4z8wy9h6n0zw1xb5dh686ff5wadflgi8"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:tests? #f))
-    (inputs
-     `(("ghc-monads-tf" ,ghc-monads-tf)))
-    (home-page "https://john-millikin.com/software/haskell-options/")
-    (synopsis "Powerful and easy-to-use command-line option parser")
-    (description
-     "The @code{options} package lets library and application developers
-easily work with command-line options.")
-    (license license:expat)))
-
-(define-public ghc-chell
-  (package
-    (name "ghc-chell")
-    (version "0.4.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/chell/chell-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "10ingy9qnbmc8cqh4i9pskcw43l0mzk8f3d76b3qz3fig5ary3j9"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-options-bootstrap" ,ghc-options-bootstrap)
-       ("ghc-patience" ,ghc-patience)
-       ("ghc-random" ,ghc-random)
-       ("ghc-ansi-terminal" ,ghc-ansi-terminal)))
-    (home-page "https://john-millikin.com/software/chell/")
-    (synopsis "Simple and intuitive library for automated testing")
-    (description
-     "Chell is a simple and intuitive library for automated testing.
-It natively supports assertion-based testing, and can use companion
-libraries such as @code{chell-quickcheck} to support more complex
-testing strategies.")
-    (license license:expat)))
-
-(define ghc-chell-quickcheck-bootstrap
-  (package
-    (name "ghc-chell-quickcheck-bootstrap")
-    (version "0.2.5.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/chell-quickcheck/"
-             "chell-quickcheck-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1iicsys9igx7m7n4l2b8djardmjy2ah5ibzp7kzs758h460fq53a"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-chell" ,ghc-chell)
-       ("ghc-random" ,ghc-random)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (arguments
-     `(#:tests? #f
-       #:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "chell-quickcheck.cabal"
-               (("QuickCheck >= 2\\.3 && < 2\\.11")
-                "QuickCheck >= 2.3 && < 2.12")))))))
-    (home-page "https://john-millikin.com/software/chell/")
-    (synopsis "QuickCheck support for the Chell testing library")
-    (description "More complex tests for @code{chell}.")
-    (license license:expat)))
-
-(define-public ghc-chell-quickcheck
-  (package
-    (name "ghc-chell-quickcheck")
-    (version "0.2.5.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/chell-quickcheck/"
-             "chell-quickcheck-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1iicsys9igx7m7n4l2b8djardmjy2ah5ibzp7kzs758h460fq53a"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "chell-quickcheck.cabal"
-               (("QuickCheck >= 2\\.3 && < 2\\.11")
-                "QuickCheck >= 2.3 && < 2.12")))))))
-    (inputs
-     `(("ghc-chell" ,ghc-chell)
-       ("ghc-chell-quickcheck-bootstrap" ,ghc-chell-quickcheck-bootstrap)
-       ("ghc-random" ,ghc-random)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://john-millikin.com/software/chell/")
-    (synopsis "QuickCheck support for the Chell testing library")
-    (description "More complex tests for @code{chell}.")
-    (license license:expat)))
-
-(define-public ghc-options
-  (package
-    (name "ghc-options")
-    (version "1.2.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/options/options-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "0qjs0v1ny52w51n5582d4z8wy9h6n0zw1xb5dh686ff5wadflgi8"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-monads-tf" ,ghc-monads-tf)
-       ("ghc-chell" ,ghc-chell)
-       ("ghc-chell-quickcheck" ,ghc-chell-quickcheck)))
-    (home-page "https://john-millikin.com/software/haskell-options/")
-    (synopsis "Powerful and easy-to-use command-line option parser")
-    (description
-     "The @code{options} package lets library and application developers
-easily work with command-line options.")
-    (license license:expat)))
-
-(define-public ghc-system-filepath
-  (package
-    (name "ghc-system-filepath")
-    (version "0.4.14")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/system-filepath/system-filepath-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "14yras4pz2dh55xpwmazcgxijvi8913pjgzb9iw50mjq1lycwmhn"))))
-    (build-system haskell-build-system)
-    ;; FIXME: One of the tests fails:
-    ;; [ FAIL  ] tests.validity.posix
-    ;; note: seed=7310214548328823169
-    ;; *** Failed! Falsifiable (after 24 tests):
-    ;; FilePath "/r2\ENQ52\t ;$/o\US=/okG\146\&6\n<u\DC3/5\182\223a\DELN\EOT#\NUL/`[m/\USEKV\ETX([)b6/\ACK\SOo\245\ETBO/f\128\STX`|\EM\"/*\EMA\USD3/\143\&4/\CAN?\SUBee\CANR/9/B0\187Kx4/Vqr\232'b:/\a\234\DLE.\"\179/\ENQ{J/|/G)@^\237/\219ml/\DC3pd\ESC"
-    (arguments `(#:tests? #f))
-    (inputs
-     `(("ghc-chell" ,ghc-chell)
-       ("ghc-chell-quickcheck" ,ghc-chell-quickcheck)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/fpco/haskell-filesystem")
-    (synopsis "High-level, byte-based file and directory path manipulations")
-    (description
-     "Provides a FilePath datatype and utility functions for operating on it.
-Unlike the filepath package, this package does not simply reuse String,
-increasing type safety.")
-    (license license:expat)))
-
-(define-public ghc-system-fileio
-  (package
-    (name "ghc-system-fileio")
-    (version "0.3.16.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/system-fileio/system-fileio-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "1484hcl27s2qcby8ws5djj11q9bz68bspcifz9h5gii2ndy70x9i"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-system-filepath" ,ghc-system-filepath)
-       ("ghc-chell" ,ghc-chell)
-       ("ghc-temporary" ,ghc-temporary)))
-    (home-page "https://github.com/fpco/haskell-filesystem")
-    (synopsis "Consistent file system interaction across GHC versions")
-    (description
-     "This is a small wrapper around the directory, unix, and Win32 packages,
-for use with system-filepath.  It provides a consistent API to the various
-versions of these packages distributed with different versions of GHC.
-In particular, this library supports working with POSIX files that have paths
-which can't be decoded in the current locale encoding.")
-    (license license:expat)))
-
-(define-public ghc-storable-complex
-  (package
-    (name "ghc-storable-complex")
-    (version "0.2.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/storable-complex/storable-complex-"
-             version ".tar.gz"))
-       (sha256
-        (base32 "01kwwkpbfjrv26vj83cd92px5qbq1bpgxj0r45534aksqhany1xb"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/cartazio/storable-complex")
-    (synopsis "Haskell Storable instance for Complex")
-    (description "This package provides a Haskell library including a
-Storable instance for Complex which is binary compatible with C99, C++
-and Fortran complex data types.")
-    (license license:bsd-3)))
-
-(define-public ghc-hmatrix
-  (package
-    (name "ghc-hmatrix")
-    (version "0.19.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/hmatrix/hmatrix-"
-             version ".tar.gz"))
-       (sha256
-        (base32 "10jd69nby29dggghcyjk6ykyr5wrn97nrv1dkpyrp0y5xm12xssj"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-random" ,ghc-random)
-       ("ghc-split" ,ghc-split)
-       ("ghc-storable-complex" ,ghc-storable-complex)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-vector" ,ghc-vector)
-       ;;("openblas" ,openblas)
-       ("lapack" ,lapack)))
-    ;; Guix's OpenBLAS is built with the flag "NO_LAPACK=1" which
-    ;; disables inclusion of the LAPACK functions.
-    ;; (arguments `(#:configure-flags '("--flags=openblas")))
-    (home-page "https://github.com/albertoruiz/hmatrix")
-    (synopsis "Haskell numeric linear algebra library")
-    (description "The HMatrix package provices a Haskell library for
-dealing with linear systems, matrix decompositions, and other
-numerical computations based on BLAS and LAPACK.")
-    (license license:bsd-3)))
-
-(define-public ghc-hmatrix-gsl
-  (package
-    (name "ghc-hmatrix-gsl")
-    (version "0.19.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/hmatrix-gsl/hmatrix-gsl-"
-             version ".tar.gz"))
-       (sha256
-        (base32 "0v6dla426x4ywaq59jm89ql1i42n39iw6z0j378xwb676v9kfxhm"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-hmatrix" ,ghc-hmatrix)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-random" ,ghc-random)
-       ("gsl" ,gsl)))
-    (native-inputs `(("pkg-config" ,pkg-config)))
-    (home-page "https://github.com/albertoruiz/hmatrix")
-    (synopsis "Haskell GSL binding")
-    (description "This Haskell library provides a purely functional
-interface to selected numerical computations, internally implemented
-using GSL.")
-    (license license:gpl3+)))
-
-(define-public ghc-hmatrix-special
-  (package
-    (name "ghc-hmatrix-special")
-    (version "0.19.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri
-        (string-append
-         "https://hackage.haskell.org/package/hmatrix-special/hmatrix-special-"
-         version ".tar.gz"))
-       (sha256
-        (base32 "1mywr61kr852sbff26n9x95kswx9l4ycbv6s68qsbkh02xzqq7qz"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-hmatrix" ,ghc-hmatrix)
-       ("ghc-hmatrix-gsl" ,ghc-hmatrix-gsl)))
-    (home-page "https://github.com/albertoruiz/hmatrix")
-    (synopsis "Haskell interface to GSL special functions")
-    (description "This library provides an interface to GSL special
-functions for Haskell.")
-    (license license:gpl3+)))
-
-(define-public ghc-hmatrix-gsl-stats
-  (package
-    (name "ghc-hmatrix-gsl-stats")
-    (version "0.4.1.7")
-    (source
-     (origin
-       (method url-fetch)
-       (uri
-        (string-append
-         "https://hackage.haskell.org/package/hmatrix-gsl-stats/hmatrix-gsl-stats-"
-         version ".tar.gz"))
-       (sha256
-        (base32 "1gslgk58lzin43cvbpivhw7nrn9qyaa6qwhy1z9ypvyal5p8n3sa"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-vector" ,ghc-vector)
-       ("ghc-storable-complex" ,ghc-storable-complex)
-       ("ghc-hmatrix" ,ghc-hmatrix)
-       ("gsl" ,gsl)))
-    (native-inputs `(("pkg-config" ,pkg-config)))
-    (home-page "http://code.haskell.org/hmatrix-gsl-stats")
-    (synopsis "GSL Statistics interface for Haskell")
-    (description "This Haskell library provides a purely functional
-interface for statistics based on hmatrix and GSL.")
-    (license license:bsd-3)))
-
-(define-public ghc-easyplot
-  (package
-    (name "ghc-easyplot")
-    (version "1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/easyplot/easyplot-"
-             version ".tar.gz"))
-       (sha256
-        (base32 "18kndgvdj2apjpfga6fp7m16y1gx8zrwp3c5vfj03sx4v6jvciqk"))))
-    (build-system haskell-build-system)
-    (propagated-inputs `(("gnuplot" ,gnuplot)))
-    (arguments
-     `(#:phases (modify-phases %standard-phases
-                  (add-after 'unpack 'fix-setup-suffix
-                    (lambda _ (rename-file "Setup.lhs" "Setup.hs") #t)))))
-    (home-page "https://hub.darcs.net/scravy/easyplot")
-    (synopsis "Haskell plotting library based on gnuplot")
-    (description "This package provides a plotting library for
-Haskell, using gnuplot for rendering.")
-    (license license:expat)))
-
-(define-public ghc-hashtables
-  (package
-    (name "ghc-hashtables")
-    (version "1.2.3.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/hashtables/hashtables-"
-             version ".tar.gz"))
-       (sha256
-        (base32 "1giw9caajr07slf09j7zry9b0kvm4yj9q78zy1mawzi6gk3wglcg"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-hashable" ,ghc-hashable)
-       ("ghc-primitive" ,ghc-primitive)
-       ("ghc-vector" ,ghc-vector)))
-    (home-page "https://github.com/gregorycollins/hashtables")
-    (synopsis "Haskell Mutable hash tables in the ST monad")
-    (description "This package provides a Haskell library including a
-couple of different implementations of mutable hash tables in the ST
-monad, as well as a typeclass abstracting their common operations, and
-a set of wrappers to use the hash tables in the IO monad.")
-    (license license:bsd-3)))
-
-(define-public ghc-data-accessor
-  (package
-    (name "ghc-data-accessor")
-    (version "0.2.2.7")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "mirror://hackage/package/data-accessor/data-accessor-"
-             version ".tar.gz"))
-       (sha256
-        (base32 "1vf2g1gac3rm32g97rl0fll51m88q7ry4m6khnl5j47qsmx24r9l"))))
-    (build-system haskell-build-system)
-    (home-page "https://www.haskell.org/haskellwiki/Record_access")
-    (synopsis
-     "Haskell utilities for accessing and manipulating fields of records")
-    (description "This package provides Haskell modules for accessing and
-manipulating fields of records.")
-    (license license:bsd-3)))
-
-(define-public ghc-data-accessor-transformers
-  (package
-    (name "ghc-data-accessor-transformers")
-    (version "0.2.1.7")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "mirror://hackage/package/data-accessor-transformers/"
-             "data-accessor-transformers-" version ".tar.gz"))
-       (sha256
-        (base32 "0yp030vafbpddl27m606aibbbr5ar5j5bsv4bksscz3cq4yq5j10"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-data-accessor" ,ghc-data-accessor)))
-    (home-page "https://www.haskell.org/haskellwiki/Record_access")
-    (synopsis "Use Accessor to access state in transformers State monad")
-    (description "This package provides Haskell modules to allow use of
-Accessor to access state in transformers State monad.")
-    (license license:bsd-3)))
-
-(define-public ghc-utility-ht
-  (package
-    (name "ghc-utility-ht")
-    (version "0.0.14")
-    (home-page "https://hackage.haskell.org/package/utility-ht")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append home-page "/utility-ht-" version ".tar.gz"))
-       (sha256
-        (base32 "1a7bgk7wv7sqbxbiv7kankiimr3wij7zdm7s83zwsf886ghyxhk9"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-quickcheck" ,ghc-quickcheck)))
-    (synopsis "Haskell helper functions for Lists, Maybes, Tuples, Functions")
-    (description "This package includes Hakell modules providing various
-helper functions for Lists, Maybes, Tuples, Functions.")
-    (license license:bsd-3)))
-
-(define-public ghc-gnuplot
-  (package
-    (name "ghc-gnuplot")
-    (version "0.5.5.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "mirror://hackage/package/gnuplot/gnuplot-"
-             version ".tar.gz"))
-       (sha256
-        (base32 "1mlppnc13ygjzmf6ldydys4wvy35yb3xjwwfgf9rbi7nfcqjr6mn"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-temporary" ,ghc-temporary)
-       ("ghc-utility-ht" ,ghc-utility-ht)
-       ("ghc-data-accessor-transformers" ,ghc-data-accessor-transformers)
-       ("ghc-data-accessor" ,ghc-data-accessor)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("gnuplot" ,gnuplot)))
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'fix-path-to-gnuplot
-           (lambda* (#:key inputs #:allow-other-keys)
-             (let ((gnuplot (assoc-ref inputs "gnuplot")))
-               (substitute* "os/generic/Graphics/Gnuplot/Private/OS.hs"
-                 (("(gnuplotName = ).*$" all cmd)
-                  (string-append cmd "\"" gnuplot "/bin/gnuplot\"")))))))))
-    (home-page "https://www.haskell.org/haskellwiki/Gnuplot")
-    (synopsis "2D and 3D plots using gnuplot")
-    (description "This package provides a Haskell module for creating 2D and
-3D plots using gnuplot.")
-    (license license:bsd-3)))
-
-(define-public ghc-hinotify
-  (package
-    (name "ghc-hinotify")
-    (version "0.3.10")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://hackage.haskell.org/package/hinotify/"
-                    "hinotify-" version ".tar.gz"))
-              (sha256
-               (base32
-                "17ax3n68a5c2ddazp86aciliskrh6znd3bnry0wcllmb6dbpsaxg"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-async" ,ghc-async)))
-    (home-page "https://github.com/kolmodin/hinotify.git")
-    (synopsis "Haskell binding to inotify")
-    (description "This library provides a wrapper to the Linux kernel's inotify
-feature, allowing applications to subscribe to notifications when a file is
-accessed or modified.")
-    (license license:bsd-3)))
-
-(define-public ghc-fsnotify
-  (package
-    (name "ghc-fsnotify")
-    (version "0.3.0.1")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://hackage.haskell.org/package/fsnotify/"
-                    "fsnotify-" version ".tar.gz"))
-              (sha256
-               (base32
-                "19bdbz9wb9jvln6yg6qm0hz0w84bypvkxf0wjhgrgd52f9gidlny"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-async" ,ghc-async)
-       ("ghc-unix-compat" ,ghc-unix-compat)
-       ("ghc-hinotify" ,ghc-hinotify)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-random" ,ghc-random)
-       ("ghc-shelly" ,ghc-shelly)
-       ("ghc-temporary" ,ghc-temporary)))
-    (home-page "https://github.com/haskell-fswatch/hfsnotify")
-    (synopsis "Cross platform library for file change notification.")
-    (description "Cross platform library for file creation, modification, and
-deletion notification. This library builds upon existing libraries for platform
-specific Windows, Mac, and Linux file system event notification.")
-    (license license:bsd-3)))
-
-(define-public ghc-ieee754
-  (package
-    (name "ghc-ieee754")
-    (version "0.8.0")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://hackage.haskell.org/package/ieee754/"
-                    "ieee754-" version ".tar.gz"))
-              (sha256
-               (base32
-                "1lcs521g9lzy9d7337vg4w7q7s8500rfqy7rcifcz6pm6yfgyb8f"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/patperry/hs-ieee754")
-    (synopsis "Utilities for dealing with IEEE floating point numbers")
-    (description "Utilities for dealing with IEEE floating point numbers,
-ported from the Tango math library; approximate and exact equality comparisons
-for general types.")
-    (license license:bsd-3)))
-
-(define-public ghc-terminal-size
-  (package
-    (name "ghc-terminal-size")
-    (version "0.3.2.1")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://hackage.haskell.org/package/terminal-size/"
-                    "terminal-size-" version ".tar.gz"))
-              (sha256
-               (base32
-                "0n4nvj3dbj9gxfnprgish45asn9z4dipv9j98s8i7g2n8yb3xhmm"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/terminal-size")
-    (synopsis "Get terminal window height and width")
-    (description "Get terminal window height and width without ncurses
-dependency.")
-    (license license:bsd-3)))
-
-(define-public ghc-language-c
-  (package
-    (name "ghc-language-c")
-    (version "0.8.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "language-c/language-c-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0sdkjj0hq8p69fcdm6ljbjkjvrsrb8a6rl5dq6dj6byj32ajrm3d"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-syb" ,ghc-syb)))
-    (native-inputs
-     `(("ghc-happy" ,ghc-happy)
-       ("ghc-alex" ,ghc-alex)))
-    (home-page "https://visq.github.io/language-c/")
-    (synopsis "Analysis and generation of C code")
-    (description
-     "Language C is a Haskell library for the analysis and generation of C code.
-It features a complete, well-tested parser and pretty printer for all of C99
-and a large set of GNU extensions.")
-    (license license:bsd-3)))
-
-(define-public ghc-markdown-unlit
-  (package
-    (name "ghc-markdown-unlit")
-    (version "0.5.0")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "mirror://hackage/package/markdown-unlit/"
-                    "markdown-unlit-" version ".tar.gz"))
-              (sha256
-               (base32
-                "1gy79vr85vcp13rdjh0hz7zv6daqqffww4j0cqn2lpjjh9xhsbg7"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-base-compat" ,ghc-base-compat)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-silently" ,ghc-silently)
-       ("ghc-stringbuilder" ,ghc-stringbuilder)
-       ("ghc-temporary" ,ghc-temporary)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/sol/markdown-unlit#readme")
-    (synopsis "Literate Haskell support for Markdown")
-    (description "This package allows you to have a README.md that at the
-same time is a literate Haskell program.")
-    (license license:expat)))
-
-(define-public corrode
-  (let ((commit "b6699fb2fa552a07c6091276285a44133e5c9789"))
-    (package
-      (name "corrode")
-      (version (string-append "0.0.1-" (string-take commit 7)))
-      (source
-       (origin
-         (method git-fetch)
-         (uri (git-reference
-               (url "https://github.com/jameysharp/corrode.git")
-               (commit "b6699fb2fa552a07c6091276285a44133e5c9789")))
-         (file-name
-          (string-append name "-" version "-checkout"))
-         (sha256
-          (base32 "02v0yyj6sk4gpg2222wzsdqjxn8w66scbnf6b20x0kbmc69qcz4r"))))
-      (build-system haskell-build-system)
-      (inputs
-       `(("ghc-language-c" ,ghc-language-c)
-         ("ghc-markdown-unlit" ,ghc-markdown-unlit)))
-      (home-page "https://github.com/jameysharp/corrode")
-      (synopsis "Automatic semantics-preserving translation from C to Rust")
-      (description
-       "This program reads a C source file and prints an equivalent module in
-Rust syntax.  It is intended to be useful for two different purposes:
-
-@enumerate
-@item Partial automation for migrating legacy code that was implemented in C.
-@item A new, complementary approach to static analysis for C programs.
-@end enumerate\n")
-      (license license:gpl2+))))
-
-(define-public ghc-wave
-  (package
-    (name "ghc-wave")
-    (version "0.1.5")
-    (source (origin
-      (method url-fetch)
-      (uri (string-append
-             "https://hackage.haskell.org/package/wave/wave-"
-             version
-             ".tar.gz"))
-      (sha256
-        (base32
-          "03zycmwrchhqvi37fdvlzz2d1vl4hy0i8xyys1zznw38qfq0h2i5"))))
-    (build-system haskell-build-system)
-    (arguments
-     '(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'update-constraints
-           (lambda _
-             (substitute* "wave.cabal"
-               (("temporary.* < 1\\.3")
-                "temporary >= 1.1 && < 1.4")))))))
-    (inputs
-     `(("ghc-cereal" ,ghc-cereal)
-       ("ghc-data-default-class"
-        ,ghc-data-default-class)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-temporary" ,ghc-temporary)))
-    (native-inputs
-     `(("hspec-discover" ,hspec-discover)
-       ("ghc-hspec" ,ghc-hspec)))
-    (home-page "https://github.com/mrkkrp/wave")
-    (synopsis "Work with WAVE and RF64 files in Haskell")
-    (description "This package allows you to work with WAVE and RF64
-files in Haskell.")
-    (license license:bsd-3)))
-
-(define-public ghc-hslogger
-  (package
-    (name "ghc-hslogger")
-    (version "1.2.10")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "hslogger-" version "/" "hslogger-"
-                           version ".tar.gz"))
-       (sha256 (base32
-                "0as5gvlh6pi2gflakp695qnlizyyp059dqrhvjl4gjxalja6xjnp"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-network" ,ghc-network)
-       ("ghc-old-locale" ,ghc-old-locale)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)))
-    (home-page "https://software.complete.org/hslogger")
-    (synopsis "Logging framework for Haskell, similar to Python's logging module")
-    (description "Hslogger lets each log message have a priority and source be
-associated with it.  The programmer can then define global handlers that route
-or filter messages based on the priority and source.  It also has a syslog
-handler built in.")
-    (license license:bsd-3)))
-
-(define-public ghc-unexceptionalio
-  (package
-    (name "ghc-unexceptionalio")
-    (version "0.4.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "unexceptionalio-" version "/" "unexceptionalio-"
-                           version ".tar.gz"))
-       (sha256 (base32 "09gynk472l7nn5l2w320n4dwigwp0wh0shfp6dyw6r5h2jdxz18p"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/singpolyma/unexceptionalio")
-    (synopsis "IO without any non-error, synchronous exceptions")
-    (description "When you've caught all the exceptions that can be
-handled safely, this is what you're left with.")
-    (license license:isc)))
-
-(define-public ghc-json
-  (package
-    (name "ghc-json")
-    (version "0.9.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/json/"
-                           "json-" version ".tar.gz"))
-       (sha256
-        (base32
-         "13kkfgx58z18jphbg56jn08jn72wi3kvfndlwwx87hqwg7x1dfz6"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-syb" ,ghc-syb)))
-    (home-page "https://hackage.haskell.org/package/json")
-    (synopsis "Serializes Haskell data to and from JSON")
-    (description "This package provides a parser and pretty printer for
-converting between Haskell values and JSON.
-JSON (JavaScript Object Notation) is a lightweight data-interchange format.")
-    (license license:bsd-3)))
-
-(define-public ghc-esqueleto
-  (let ((version "2.5.3")
-        (revision "1")
-        (commit "b81e0d951e510ebffca03c5a58658ad884cc6fbd"))
-    (package
-      (name "ghc-esqueleto")
-      (version (git-version version revision commit))
-      (source
-       (origin
-         (method git-fetch)
-         (uri (git-reference
-               (url "https://github.com/bitemyapp/esqueleto")
-               (commit commit)))
-         (file-name (git-file-name name version))
-         (sha256
-          (base32
-           "0lz1qxms7cfg5p3j37inlych0r2fwhm8xbarcys3df9m7jy9nixa"))))
-      (build-system haskell-build-system)
-      (arguments
-       `(#:haddock? #f  ; Haddock reports an internal error.
-         #:phases
-         (modify-phases %standard-phases
-           ;; This package normally runs tests for the MySQL, PostgreSQL, and
-           ;; SQLite backends.  Since we only have Haskell packages for
-           ;; SQLite, we remove the other two test suites.  FIXME: Add the
-           ;; other backends and run all three test suites.
-           (add-before 'configure 'remove-non-sqlite-test-suites
-             (lambda _
-               (use-modules (ice-9 rdelim))
-               (with-atomic-file-replacement "esqueleto.cabal"
-                 (lambda (in out)
-                   (let loop ((line (read-line in 'concat)) (deleting? #f))
-                     (cond
-                      ((eof-object? line) #t)
-                      ((string-every char-set:whitespace line)
-                       (unless deleting? (display line out))
-                       (loop (read-line in 'concat) #f))
-                      ((member line '("test-suite mysql\n"
-                                      "test-suite postgresql\n"))
-                       (loop (read-line in 'concat) #t))
-                      (else
-                       (unless deleting? (display line out))
-                       (loop (read-line in 'concat) deleting?)))))))))))
-      (inputs
-       `(("ghc-blaze-html" ,ghc-blaze-html)
-         ("ghc-conduit" ,ghc-conduit)
-         ("ghc-monad-logger" ,ghc-monad-logger)
-         ("ghc-persistent" ,ghc-persistent)
-         ("ghc-resourcet" ,ghc-resourcet)
-         ("ghc-tagged" ,ghc-tagged)
-         ("ghc-unliftio" ,ghc-unliftio)
-         ("ghc-unordered-containers" ,ghc-unordered-containers)))
-      (native-inputs
-       `(("ghc-hspec" ,ghc-hspec)
-         ("ghc-persistent-sqlite" ,ghc-persistent-sqlite)
-         ("ghc-persistent-template" ,ghc-persistent-template)))
-      (home-page "https://github.com/bitemyapp/esqueleto")
-      (synopsis "Type-safe embedded domain specific language for SQL queries")
-      (description "This library provides a type-safe embedded domain specific
-language (EDSL) for SQL queries that works with SQL backends as provided by
-@code{ghc-persistent}.  Its language closely resembles SQL, so you don't have
-to learn new concepts, just new syntax, and it's fairly easy to predict the
-generated SQL and optimize it for your backend.")
-      (license license:bsd-3))))
-
-(define-public shellcheck
-  (package
-    (name "shellcheck")
-    (version "0.7.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/ShellCheck/ShellCheck-"
-             version ".tar.gz"))
-       (sha256
-        (base32 "1vx895cp5k5h0680xfwj74lk97m9y627n965x6srds0gfnbkzy9s"))
-       (file-name (string-append name "-" version ".tar.gz"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-aeson" ,ghc-aeson)
-       ("ghc-diff" ,ghc-diff)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-regex-tdfa" ,ghc-regex-tdfa)))
-    (home-page "https://github.com/koalaman/shellcheck")
-    (synopsis "Static analysis for shell scripts")
-    (description "@code{shellcheck} provides static analysis for
-@command{bash} and @command{sh} shell scripts.
-It gives warnings and suggestions in order to:
-
-@enumerate
-@item Point out and clarify typical beginner's syntax issues that cause
-a shell to give cryptic error messages.
-@item Point out and clarify typical intermediate level semantic problems
-that cause a shell to behave strangely and counter-intuitively.
-@item Point out subtle caveats, corner cases and pitfalls that may cause an
-advanced user's otherwise working script to fail under future circumstances.
-@end enumerate")
-    (license license:gpl3+)))
-
-(define-public ghc-simple-sendfile
-  (package
-    (name "ghc-simple-sendfile")
-    (version "0.2.27")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "simple-sendfile-" version "/"
-                           "simple-sendfile-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1bwwqzcm56m2w4ymsa054sxmpbj76h9pvb0jf8zxp8lr41cp51gn"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-conduit" ,ghc-conduit)
-       ("ghc-conduit-extra" ,ghc-conduit-extra)
-       ("ghc-network" ,ghc-network)
-       ("ghc-resourcet" ,ghc-resourcet)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/kazu-yamamoto/simple-sendfile")
-    (synopsis "Cross platform library for the sendfile system call")
-    (description "This library tries to call minimum system calls which
-are the bottleneck of web servers.")
-    (license license:bsd-3)))
-
-(define-public ghc-hex
-  (package
-    (name "ghc-hex")
-    (version "0.1.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "hex-" version "/"
-                           "hex-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1v31xiaivrrn0q2jz8919wvkjplv1kxna5ajhsj701fqxm1i5vhj"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/hex")
-    (synopsis "Convert strings into hexadecimal and back")
-    (description "This package provides conversion functions between
-bytestrings and their hexademical representation.")
-    (license license:bsd-3)))
-
-(define-public ghc-psqueues
-  (package
-    (name "ghc-psqueues")
-    (version "0.2.7.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "psqueues-" version "/"
-                           "psqueues-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1sjgc9bxh63kkdp59nbirx3xazr02ia5yhp4f4a0jnq1hj465wsc"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-hashable" ,ghc-hashable)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://github.com/jaspervdj/psqueues")
-    (synopsis "Pure priority search queues")
-    (description "The psqueues package provides
-@uref{https://en.wikipedia.org/wiki/Priority_queue, Priority Search Queues} in
-three different flavors:
-
-@itemize
-@item @code{OrdPSQ k p v}, which uses the @code{Ord k} instance to provide
-fast insertion, deletion and lookup.  This implementation is based on Ralf
-Hinze's @uref{http://citeseer.ist.psu.edu/hinze01simple.html, A Simple
-Implementation Technique for Priority Search Queues}.
-
-Hence, it is similar to the @uref{https://hackage.haskell.org/package/PSQueue,
-PSQueue} library, although it is considerably faster and provides a slightly
-different API.
-
-@item @code{IntPSQ p v} is a far more efficient implementation.  It fixes the
-key type to @code{Int} and uses a
-@code{https://en.wikipedia.org/wiki/Radix_tree, radix tree} (like @code{IntMap})
-with an additional min-heap property.
-
-@item @code{HashPSQ k p v} is a fairly straightforward extension
-of @code{IntPSQ}: it simply uses the keys' hashes as indices in the
-@code{IntPSQ}.  If there are any hash collisions, it uses an
-@code{OrdPSQ} to resolve those.  The performance of this implementation
-is comparable to that of @code{IntPSQ}, but it is more widely
-applicable since the keys are not restricted to @code{Int},
-but rather to any @code{Hashable} datatype.
-@end itemize
-
-Each of the three implementations provides the same API, so they can
-be used interchangeably.
-
-Typical applications of Priority Search Queues include:
-
-@itemize
-@item Caches, and more specifically LRU Caches;
-@item Schedulers;
-@item Pathfinding algorithms, such as Dijkstra's and A*.
-@end itemize")
-    (license license:bsd-3)))
-
-(define-public ghc-glob
-  (package
-    (name "ghc-glob")
-    (version "0.9.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "Glob-" version "/"
-                           "Glob-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1rbwcq9w9951qsnp13vqcm9r01yax2yh1wk8s4zxa3ckk9717iwg"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-dlist" ,ghc-dlist)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "http://iki.fi/matti.niemenmaa/glob/")
-    (synopsis "Haskell library matching glob patterns against file paths")
-    (description "This package provides a Haskell library for @dfn{globbing}:
-matching patterns against file paths.")
-    (license license:bsd-3)))
-
-(define-public ghc-errors
-  (package
-    (name "ghc-errors")
-    (version "2.3.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "errors-" version "/"
-                           "errors-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0x8znwn31qcx6kqx99wp7bc86kckfb39ncz3zxvj1s07kxlfawk7"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-unexceptionalio" ,ghc-unexceptionalio)
-       ("ghc-safe" ,ghc-safe)))
-    (home-page "https://github.com/gabriel439/haskell-errors-library")
-    (synopsis "Error handling library for Haskell")
-    (description "This library encourages an error-handling style that
-directly uses the type system, rather than out-of-band exceptions.")
-    (license license:bsd-3)))
-
-(define-public ghc-vector-th-unbox
-  (package
-    (name "ghc-vector-th-unbox")
-    (version "0.2.1.6")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "vector-th-unbox-" version "/"
-                           "vector-th-unbox-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0d82x55f5vvr1jvaia382m23rs690lg55pvavv8f4ph0y6kd91xy"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-vector" ,ghc-vector)
-       ("ghc-data-default" ,ghc-data-default)))
-    (home-page "https://github.com/liyang/vector-th-unbox")
-    (synopsis "Deriver for Data.Vector.Unboxed using Template Haskell")
-    (description "This Haskell library provides a Template Haskell
-deriver for unboxed vectors, given a pair of coercion functions to
-and from some existing type with an Unbox instance.")
-    (license license:bsd-3)))
-
-(define-public ghc-erf
-  (package
-    (name "ghc-erf")
-    (version "2.0.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "erf-" version "/"
-                           "erf-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0dxk2r32ajmmc05vaxcp0yw6vgv4lkbmh8jcshncn98xgsfbgw14"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/erf")
-    (synopsis "The error function, erf, and related functions for Haskell")
-    (description "This Haskell library provides a type class for the
-error function, erf, and related functions.  Instances for Float and
-Double.")
-    (license license:bsd-3)))
-
-(define-public ghc-math-functions
-  (package
-    (name "ghc-math-functions")
-    (version "0.2.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "math-functions-" version "/"
-                           "math-functions-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1sv5vabsx332v1lpb6v3jv4zrzvpx1n7yprzd8wlcda5vsc5a6zp"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f))  ; FIXME: 1 test fails.
-    (inputs
-     `(("ghc-vector" ,ghc-vector)
-       ("ghc-vector-th-unbox" ,ghc-vector-th-unbox)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-erf" ,ghc-erf)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://github.com/bos/math-functions")
-    (synopsis "Special functions and Chebyshev polynomials for Haskell")
-    (description "This Haskell library provides implementations of
-special mathematical functions and Chebyshev polynomials.  These
-functions are often useful in statistical and numerical computing.")
-    (license license:bsd-3)))
-
-(define-public ghc-mwc-random
-  (package
-    (name "ghc-mwc-random")
-    (version "0.13.6.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "mwc-random-" version "/"
-                           "mwc-random-" version ".tar.gz"))
-       (sha256
-        (base32
-         "05j7yh0hh9nxic3dijmzv44kc6gzclvamdph7sq7w19wq57k6pq6"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-primitive" ,ghc-primitive)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-math-functions" ,ghc-math-functions)))
-    (arguments
-     `(#:tests? #f)) ; FIXME: Test-Suite `spec` fails.
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://github.com/bos/mwc-random")
-    (synopsis "Random number generation library for Haskell")
-    (description "This Haskell package contains code for generating
-high quality random numbers that follow either a uniform or normal
-distribution.  The generated numbers are suitable for use in
-statistical applications.
-
-The uniform PRNG uses Marsaglia's MWC256 (also known as MWC8222)
-multiply-with-carry generator, which has a period of 2^{8222} and
-fares well in tests of randomness.  It is also extremely fast,
-between 2 and 3 times faster than the Mersenne Twister.")
-    (license license:bsd-3)))
-
-(define-public ghc-vector-algorithms
-  (package
-    (name "ghc-vector-algorithms")
-    (version "0.7.0.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "vector-algorithms-" version "/"
-                           "vector-algorithms-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0mfa8ig9v69l41p2vb5jl4qmaln5y1rlzarr2mlgm8g1nvq8qqdg"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-vector" ,ghc-vector)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/bos/math-functions")
-    (synopsis "Algorithms for vector arrays in Haskell")
-    (description "This Haskell library algorithms for vector arrays.")
-    (license license:bsd-3)))
-
-(define-public ghc-language-haskell-extract
-  (package
-    (name "ghc-language-haskell-extract")
-    (version "0.2.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "language-haskell-extract-" version "/"
-                           "language-haskell-extract-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1nxcs7g8a1sp91bzpy4cj6s31k5pvc3gvig04cbrggv5cvjidnhl"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-regex-posix" ,ghc-regex-posix)))
-    (home-page "https://github.com/finnsson/template-helper")
-    (synopsis "Haskell module to automatically extract functions from
-the local code")
-    (description "This package contains helper functions on top of
-Template Haskell.
-
-For example, @code{functionExtractor} extracts all functions after a
-regexp-pattern, which can be useful if you wish to extract all functions
-beginning with @code{test} (for a test framework) or all functions beginning
-with @code{wc} (for a web service).")
-    (license license:bsd-3)))
-
-(define-public ghc-abstract-par
-  (package
-    (name "ghc-abstract-par")
-    (version "0.3.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "abstract-par-" version "/"
-                           "abstract-par-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0q6qsniw4wks2pw6wzncb1p1j3k6al5njnvm2v5n494hplwqg2i4"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/simonmar/monad-par")
-    (synopsis "Abstract parallelization interface for Haskell")
-    (description "This Haskell package is an abstract interface
-only.  It provides a number of type clasess, but not an
-implementation.  The type classes separate different levels
-of @code{Par} functionality.  See the @code{Control.Monad.Par.Class}
-module for more details.")
-    (license license:bsd-3)))
-
-(define-public ghc-monad-par-extras
-  (package
-    (name "ghc-monad-par-extras")
-    (version "0.3.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "monad-par-extras-" version "/"
-                           "monad-par-extras-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0bl4bd6jzdc5zm20q1g67ppkfh6j6yn8fwj6msjayj621cck67p2"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-abstract-par" ,ghc-abstract-par)
-              ("ghc-cereal" ,ghc-cereal)
-              ("ghc-random" ,ghc-random)))
-    (home-page "https://github.com/simonmar/monad-par")
-    (synopsis "Combinators and extra features for Par monads for Haskell")
-    (description "This Haskell package provides additional data structures,
-and other added capabilities layered on top of the @code{Par} monad.")
-    (license license:bsd-3)))
-
-(define-public ghc-abstract-deque
-  (package
-    (name "ghc-abstract-deque")
-    (version "0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "abstract-deque-" version "/"
-                           "abstract-deque-" version ".tar.gz"))
-       (sha256
-        (base32
-         "18jwswjxwzc9bjiy4ds6hw2a74ki797jmfcifxd2ga4kh7ri1ah9"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-random" ,ghc-random)))
-    (home-page "https://github.com/rrnewton/haskell-lockfree/wiki")
-    (synopsis "Abstract, parameterized interface to mutable Deques for Haskell")
-    (description "This Haskell package provides an abstract interface to
-highly-parameterizable queues/deques.
-
-Background: There exists a feature space for queues that extends between:
-
-@itemize
-@item Simple, single-ended, non-concurrent, bounded queues
-
-@item Double-ended, thread-safe, growable queues with important points
-in between (such as the queues used for work stealing).
-@end itemize
-
-This package includes an interface for Deques that allows the programmer
-to use a single API for all of the above, while using the type system to
-select an efficient implementation given the requirements (using type families).
-
-This package also includes a simple reference implementation based on
-@code{IORef} and @code{Data.Sequence}.")
-    (license license:bsd-3)))
-
-(define-public ghc-monad-par
-  (package
-    (name "ghc-monad-par")
-    (version "0.3.4.8")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "monad-par-" version "/"
-                           "monad-par-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0ldrzqy24fsszvn2a2nr77m2ih7xm0h9bgkjyv1l274aj18xyk7q"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-abstract-par" ,ghc-abstract-par)
-              ("ghc-abstract-deque" ,ghc-abstract-deque)
-              ("ghc-monad-par-extras" ,ghc-monad-par-extras)
-              ("ghc-mwc-random" ,ghc-mwc-random)
-              ("ghc-parallel" ,ghc-parallel)))
-    (native-inputs `(("ghc-quickcheck" ,ghc-quickcheck)
-                     ("ghc-hunit" ,ghc-hunit)
-                     ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-                     ("ghc-test-framework-quickcheck2"
-                      ,ghc-test-framework-quickcheck2)
-                     ("ghc-test-framework" ,ghc-test-framework)
-                     ("ghc-test-framework-th" ,ghc-test-framework-th)))
-    (home-page "https://github.com/simonmar/monad-par")
-    (synopsis "Haskell library for parallel programming based on a monad")
-    (description "The @code{Par} monad offers an API for parallel
-programming.  The library works for parallelising both pure and @code{IO}
-computations, although only the pure version is deterministic.  The default
-implementation provides a work-stealing scheduler and supports forking tasks
-that are much lighter weight than IO-threads.")
-    (license license:bsd-3)))
-
-(define-public ghc-statistics
-  (package
-    (name "ghc-statistics")
-    (version "0.14.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "statistics-" version "/"
-                           "statistics-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0y27gafkib0x0fn39qfn2rkgsfrm09ng35sbb5dwr7rclhnxz59l"))))
-    (build-system haskell-build-system)
-    (arguments
-     '(#:cabal-revision
-       ("2" "1bx70yqkn62ii17fjv3pig4hklrzkqd09zj67zzjiyjzmn04fir3")
-       ;; Two tests fail: "Discrete CDF is OK" and "Quantile is CDF inverse".
-       #:tests? #f))
-    (inputs
-     `(("ghc-aeson" ,ghc-aeson)
-       ("ghc-base-orphans" ,ghc-base-orphans)
-       ("ghc-erf" ,ghc-erf)
-       ("ghc-math-functions" ,ghc-math-functions)
-       ("ghc-monad-par" ,ghc-monad-par)
-       ("ghc-mwc-random" ,ghc-mwc-random)
-       ("ghc-primitive" ,ghc-primitive)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-vector-algorithms" ,ghc-vector-algorithms)
-       ("ghc-vector-th-unbox" ,ghc-vector-th-unbox)
-       ("ghc-vector-binary-instances" ,ghc-vector-binary-instances)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-ieee754" ,ghc-ieee754)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://github.com/bos/mwc-random")
-    (synopsis "Haskell library of statistical types, data, and functions")
-    (description "This library provides a number of common functions
-and types useful in statistics.  We focus on high performance, numerical
-robustness, and use of good algorithms.  Where possible, we provide references
-to the statistical literature.
-
-The library's facilities can be divided into four broad categories:
-
-@itemize
-@item Working with widely used discrete and continuous probability
-distributions.  (There are dozens of exotic distributions in use; we focus
-on the most common.)
-
-@item Computing with sample data: quantile estimation, kernel density
-estimation, histograms, bootstrap methods, significance testing,
-and regression and autocorrelation analysis.
-
-@item Random variate generation under several different distributions.
-
-@item Common statistical tests for significant differences between samples.
-@end itemize")
-    (license license:bsd-2)))
-
-(define-public ghc-chunked-data
-  (package
-    (name "ghc-chunked-data")
-    (version "0.3.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "chunked-data-" version "/"
-                           "chunked-data-" version ".tar.gz"))
-       (sha256
-        (base32
-         "16m7y7fwrirbjbqqcsfmr4yxa9qvfax6r7pw0zl9ky71ms0wa47p"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-vector" ,ghc-vector)
-              ("ghc-semigroups" ,ghc-semigroups)))
-    (home-page "https://github.com/snoyberg/mono-traversable")
-    (synopsis "Typeclasses for dealing with various chunked data
-representations for Haskell")
-    (description "This Haskell package was originally present in
-classy-prelude.")
-    (license license:expat)))
-
-(define-public ghc-base-prelude
-  (package
-    (name "ghc-base-prelude")
-    (version "1.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "base-prelude-" version "/"
-                           "base-prelude-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1zk728sd09hh2r4xwz4lazsrrgg5cshydn64932sm0vckplndk73"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/nikita-volkov/base-prelude")
-    (synopsis "The most complete prelude formed solely from the Haskell's base
-package")
-    (description "This Haskell package aims to reexport all the non-conflicting
-and most general definitions from the \"base\" package.
-
-This includes APIs for applicatives, arrows, monoids, foldables, traversables,
-exceptions, generics, ST, MVars and STM.
-
-This package will never have any dependencies other than \"base\".
-
-Versioning policy:
-
-The versioning policy of this package deviates from PVP in the sense
-that its exports in part are transitively determined by the version of \"base\".
-Therefore it's recommended for the users of @code{ghc-base-prelude} to specify
-the bounds of \"base\" as well.")
-    (license license:expat)))
-
-(define-public ghc-tuple-th
-  (package
-    (name "ghc-tuple-th")
-    (version "0.2.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "tuple-th-" version "/"
-                           "tuple-th-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1mrl4vvxmby7sf1paf7hklzidnr6wq55822i73smqyz0xpf3gsjn"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/DanielSchuessler/tuple-th")
-    (synopsis "Generate utility functions for tuples of statically known size
-for Haskell")
-    (description "This Haskell package contains Template Haskell functions for
-generating functions similar to those in @code{Data.List} for tuples of
-statically known size.")
-    (license license:bsd-3)))
-
-(define-public ghc-contravariant-extras
-  (package
-    (name "ghc-contravariant-extras")
-    (version "0.3.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "contravariant-extras-" version "/"
-                           "contravariant-extras-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0gg62ccl94kvh7mnvdq09pifqxjx2kgs189si90nmg44bafj7a9n"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-tuple-th" ,ghc-tuple-th)
-       ("ghc-contravariant" ,ghc-contravariant)
-       ("ghc-base-prelude" ,ghc-base-prelude)
-       ("ghc-semigroups" ,ghc-semigroups)))
-    (home-page "https://github.com/nikita-volkov/contravariant-extras")
-    (synopsis "Extras for the @code{ghc-contravariant} Haskell package")
-    (description "This Haskell package provides extras for the
-@code{ghc-contravariant} package.")
-    (license license:expat)))
-
-(define-public ghc-monadrandom
-  (package
-    (name "ghc-monadrandom")
-    (version "0.5.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "MonadRandom-" version "/"
-                           "MonadRandom-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0w44jl1n3kqvqaflh82l1wj3xxbhzfs3kf4m8rk7w6fgg8llmnmb"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-transformers-compat" ,ghc-transformers-compat)
-              ("ghc-primitive" ,ghc-primitive)
-              ("ghc-fail" ,ghc-fail)
-              ("ghc-random" ,ghc-random)))
-    (home-page "https://github.com/byorgey/MonadRandom")
-    (synopsis "Random-number generation monad for Haskell")
-    (description "This Haskell package provides support for computations
-which consume random values.")
-    (license license:bsd-3)))
-
-(define-public ghc-either
-  (package
-    (name "ghc-either")
-    (version "5.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "either-" version "/"
-                           "either-" version ".tar.gz"))
-       (sha256
-        (base32
-         "064hjfld7dkzs78sy30k5qkiva3hx24rax6dvzz5ygr2c0zypdkc"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-bifunctors" ,ghc-bifunctors)
-              ("ghc-exceptions" ,ghc-exceptions)
-              ("ghc-free" ,ghc-free)
-              ("ghc-monad-control" ,ghc-monad-control)
-              ("ghc-manodrandom" ,ghc-monadrandom)
-              ("ghc-mmorph" ,ghc-mmorph)
-              ("ghc-profunctors" ,ghc-profunctors)
-              ("ghc-semigroups" ,ghc-semigroups)
-              ("ghc-semigroupoids" ,ghc-semigroupoids)
-              ("ghc-transformers-base" ,ghc-transformers-base)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://github.com/ekmett/either")
-    (synopsis "Provides an either monad transformer for Haskell")
-    (description "This Haskell package provides an either monad transformer.")
-    (license license:bsd-3)))
-
-(define-public ghc-pretty-hex
-  (package
-    (name "ghc-pretty-hex")
-    (version "1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "pretty-hex-" version "/"
-                           "pretty-hex-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0ylwkvvjvmpprha9nx83xb8gkhyanhk5fffc0r7lb96n4ch5z6pz"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/GaloisInc/hexdump")
-    (synopsis "Haskell library for hex dumps of ByteStrings")
-    (description "This Haskell library generates pretty hex dumps of
-ByteStrings in the style of other common *nix hex dump tools.")
-    (license license:bsd-3)))
-
-(define-public ghc-network-info
-  (package
-    (name "ghc-network-info")
-    (version "0.2.0.10")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "network-info-" version "/"
-                           "network-info-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0anmgzcpnz7nw3n6vq0r25m1s9l2svpwi83wza0lzkrlbnbzd02n"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/jystic/network-info")
-    (synopsis "Access the local computer's basic network configuration")
-    (description "This Haskell library provides simple read-only access to the
-local computer's networking configuration.  It is currently capable of
-getting a list of all the network interfaces and their respective
-IPv4, IPv6 and MAC addresses.")
-    (license license:bsd-3)))
-
-(define-public ghc-uuid-types
-  (package
-    (name "ghc-uuid-types")
-    (version "1.0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "uuid-types-" version "/"
-                           "uuid-types-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1zdka5jnm1h6k36w3nr647yf3b5lqb336g3fkprhd6san9x52xlj"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'strip-test-framework-constraints
-           (lambda _
-             (substitute* "uuid-types.cabal"
-               (("HUnit >=1\\.2 && < 1\\.4") "HUnit")
-               (("QuickCheck >=2\\.4 && < 2\\.9") "QuickCheck")
-               (("tasty >= 0\\.10 && < 0\\.12") "tasty")
-               (("tasty-hunit == 0\\.9\\.\\*") "tasty-hunit")
-               (("tasty-quickcheck == 0\\.8\\.\\*") "tasty-quickcheck")))))))
-    (inputs `(("ghc-hashable" ,ghc-hashable)
-              ("ghc-random" ,ghc-random)))
-    (native-inputs `(("ghc-hunit" ,ghc-hunit)
-                     ("ghc-quickcheck" ,ghc-quickcheck)
-                     ("ghc-tasty" ,ghc-tasty)
-                     ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-                     ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
-    (home-page "https://github.com/hvr/uuid")
-    (synopsis "Haskell type definitions for UUIDs")
-    (description "This Haskell library contains type definitions for
-@dfn{Universally Unique Identifiers} or
-@uref{https://en.wikipedia.org/wiki/UUID, UUIDs}, and basic conversion
-functions.")
-    (license license:bsd-3)))
-
-(define-public ghc-uuid
-  (package
-    (name "ghc-uuid")
-    (version "1.3.13")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "uuid-" version "/"
-                           "uuid-" version ".tar.gz"))
-       (sha256
-        (base32
-         "09xhk42yhxvqmka0iqrv3338asncz8cap3j0ic0ps896f2581b6z"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("2" "0m185q62jkfb5jsv358nxbnrkv8y8hd0qqvgvh22wvc5g9ipz0r9")
-       #:phases
-       (modify-phases %standard-phases
-         (add-before 'configure 'strip-test-framework-constraints
-           (lambda _
-             (substitute* "uuid.cabal"
-               (("HUnit            >= 1\\.2   && < 1\\.4") "HUnit")
-               (("QuickCheck       >= 2\\.4   && < 2\\.10") "QuickCheck")
-               (("tasty            >= 0\\.10  && < 0\\.12") "tasty")
-               (("tasty-hunit      == 0\\.9\\.\\*") "tasty-hunit")
-               (("tasty-quickcheck == 0\\.8\\.\\*") "tasty-quickcheck")))))))
-    (inputs `(("ghc-cryptohash-sha1" ,ghc-cryptohash-sha1)
-              ("ghc-cryptohash-md5" ,ghc-cryptohash-md5)
-              ("ghc-entropy" ,ghc-entropy)
-              ("ghc-network-info" ,ghc-network-info)
-              ("ghc-random" ,ghc-random)
-              ("ghc-uuid-types" ,ghc-uuid-types)))
-    (native-inputs `(("ghc-hunit" ,ghc-hunit)
-                     ("ghc-quickcheck" ,ghc-quickcheck)
-                     ("ghc-tasty" ,ghc-tasty)
-                     ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-                     ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
-    (home-page "https://github.com/hvr/uuid")
-    (synopsis "Haskell library to create, compare, parse, and print UUIDs")
-    (description "This Haskell library provides utilities creating, comparing,
-parsing and printing @dfn{Universally Unique Identifiers} or UUIDs.")
-    (license license:bsd-3)))
-
-(define-public ghc-rebase
-  (package
-    (name "ghc-rebase")
-    (version "1.2.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "rebase-" version "/"
-                           "rebase-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1gah2qwfpzwamnikbc5h4nv6dgvv9h16di9ka7946za3nibyasya"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-hashable" ,ghc-hashable)
-              ("ghc-vector" ,ghc-vector)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)
-              ("ghc-scientific" ,ghc-scientific)
-              ("ghc-uuid" ,ghc-uuid)
-              ("ghc-dlist" ,ghc-dlist)
-              ("ghc-void" ,ghc-void)
-              ("ghc-bifunctors" ,ghc-bifunctors)
-              ("ghc-profunctors" ,ghc-profunctors)
-              ("ghc-contravariant" ,ghc-contravariant)
-              ("ghc-contravariant-extras" ,ghc-contravariant-extras)
-              ("ghc-semigroups" ,ghc-semigroups)
-              ("ghc-either" ,ghc-either)
-              ("ghc-fail" ,ghc-fail)
-              ("ghc-base-prelude" ,ghc-base-prelude)))
-    (home-page "https://github.com/nikita-volkov/rebase")
-    (synopsis "Progressive alternative to the base package
-for Haskell")
-    (description "This Haskell package is intended for those who are
-tired of keeping long lists of dependencies to the same essential libraries
-in each package as well as the endless imports of the same APIs all over again.
-
-It also supports the modern tendencies in the language.
-
-To solve those problems this package does the following:
-
-@itemize
-@item Reexport the original APIs under the @code{Rebase} namespace.
-
-@item Export all the possible non-conflicting symbols from the
-@code{Rebase.Prelude} module.
-
-@item Give priority to the modern practices in the conflicting cases.
-@end itemize
-
-The policy behind the package is only to reexport the non-ambiguous and
-non-controversial APIs, which the community has obviously settled on.
-The package is intended to rapidly evolve with the contribution from
-the community, with the missing features being added with pull-requests.")
-    (license license:expat)))
-
-(define-public ghc-rerebase
-  (package
-    (name "ghc-rerebase")
-    (version "1.2.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/rerebase/rerebase-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "11v6rmz7ql2rdx6mhb3lsal952lwihclfhh0m7fcnii5br0906ks"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-rebase" ,ghc-rebase)))
-    (home-page "https://github.com/nikita-volkov/rerebase")
-    (synopsis "Reexports from ``base'' with many other standard libraries")
-    (description "A rich drop-in replacement for @code{base}.  For details and
-documentation please visit @uref{https://github.com/nikita-volkov/rerebase,
-the project's home page}.")
-    (license license:expat)))
-
-(define-public ghc-vector-builder
-  (package
-    (name "ghc-vector-builder")
-    (version "0.3.6")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "vector-builder-" version "/"
-                           "vector-builder-" version ".tar.gz"))
-       (sha256
-        (base32
-         "06d2pa1fb3ydrl7l6rjazqyxv5i73v65x2f5fp0ypjxfbm6jsmn8"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-vector" ,ghc-vector)
-              ("ghc-semigroups" ,ghc-semigroups)
-              ("ghc-base-prelude" ,ghc-base-prelude)))
-    (native-inputs `(("ghc-attoparsec" ,ghc-attoparsec)
-                     ("ghc-tasty" ,ghc-tasty)
-                     ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-                     ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-                     ("ghc-hunit" ,ghc-hunit)
-                     ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)
-                     ("ghc-rerebase" ,ghc-rerebase)))
-    (home-page "https://github.com/nikita-volkov/vector-builder")
-    (synopsis "Vector builder for Haskell")
-    (description "This Haskell package provides an API for constructing vectors.
-It provides the composable @code{Builder} abstraction, which has instances of the
-@code{Monoid} and @code{Semigroup} classes.
-
-You would first use the @code{Builder} abstraction to specify the structure of
-the vector; then you can execute the builder to actually produce the
-vector. ")
-    (license license:expat)))
-
-(define-public ghc-foldl
-  (package
-    (name "ghc-foldl")
-    (version "1.4.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "foldl-" version "/"
-                           "foldl-" version ".tar.gz"))
-       (sha256
-        (base32
-         "13n0ca3hw5jzqf6rxsdbhbwkn61a9zlm13f0f205s60j3sc72jzk"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-mwc-randam" ,ghc-mwc-random)
-              ("ghc-primitive" ,ghc-primitive)
-              ("ghc-vector" ,ghc-vector)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)
-              ("ghc-hashable" ,ghc-hashable)
-              ("ghc-contravariant" ,ghc-contravariant)
-              ("ghc-semigroups" ,ghc-semigroups)
-              ("ghc-profunctors" ,ghc-profunctors)
-              ("ghc-semigroupoids" ,ghc-semigroupoids)
-              ("ghc-comonad" ,ghc-comonad)
-              ("ghc-vector-builder" ,ghc-vector-builder)))
-    (home-page "https://github.com/Gabriel439/Haskell-Foldl-Library")
-    (synopsis "Composable, streaming, and efficient left folds for Haskell")
-    (description "This Haskell library provides strict left folds that stream
-in constant memory, and you can combine folds using @code{Applicative} style
-to derive new folds.  Derived folds still traverse the container just once
-and are often as efficient as hand-written folds.")
-    (license license:bsd-3)))
-
-(define-public ghc-mono-traversable
-  (package
-    (name "ghc-mono-traversable")
-    (version "1.0.9.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "mono-traversable-" version "/"
-                           "mono-traversable-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0180ks0dyvpk1r20w5jw2w2n79mjnk69n9vhspaxzlyxqgim5psa"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-unordered-containers" ,ghc-unordered-containers)
-              ("ghc-hashable" ,ghc-hashable)
-              ("ghc-vector" ,ghc-vector)
-              ("ghc-vector-algorithms" ,ghc-vector-algorithms)
-              ("ghc-split" ,ghc-split)))
-    (native-inputs `(("ghc-hspec" ,ghc-hspec)
-                     ("ghc-hunit" ,ghc-hunit)
-                     ("ghc-quickcheck" ,ghc-quickcheck)
-                     ("ghc-semigroups" ,ghc-semigroups)
-                     ("ghc-foldl" ,ghc-foldl)))
-    (home-page "https://github.com/snoyberg/mono-traversable")
-    (synopsis "Haskell classes for mapping, folding, and traversing monomorphic
-containers")
-    (description "This Haskell package provides Monomorphic variants of the
-Functor, Foldable, and Traversable typeclasses.  If you understand Haskell's
-basic typeclasses, you understand mono-traversable.  In addition to what
-you are used to, it adds on an IsSequence typeclass and has code for marking
-data structures as non-empty.")
-    (license license:expat)))
-
-(define-public ghc-conduit-combinators
-  (package
-    (name "ghc-conduit-combinators")
-    (version "1.3.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "conduit-combinators-" version "/"
-                           "conduit-combinators-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1lz70vwp4y4lpsivxl0cshq7aq3968rh48r6rjvpyaj2l0bdj5wp"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-conduit" ,ghc-conduit)
-              ("ghc-conduit-extra" ,ghc-conduit-extra)
-              ("ghc-transformers-base" ,ghc-transformers-base)
-              ("ghc-primitive" ,ghc-primitive)
-              ("ghc-vector" ,ghc-vector)
-              ("ghc-void" ,ghc-void)
-              ("ghc-mwc-random" ,ghc-mwc-random)
-              ("ghc-unix-compat" ,ghc-unix-compat)
-              ("ghc-base16-bytestring" ,ghc-base16-bytestring)
-              ("ghc-base64-bytestring" ,ghc-base64-bytestring)
-              ("ghc-resourcet" ,ghc-resourcet)
-              ("ghc-monad-control" ,ghc-monad-control)
-              ("ghc-chunked-data" ,ghc-chunked-data)
-              ("ghc-mono-traversable" ,ghc-mono-traversable)))
-    (native-inputs `(("ghc-hspec" ,ghc-hspec)
-                     ("ghc-silently" ,ghc-silently)
-                     ("ghc-safe" ,ghc-safe)
-                     ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/snoyberg/mono-traversable")
-    (synopsis "Commonly used conduit functions, for both chunked and
-unchunked data")
-    (description "This Haskell package provides a replacement for Data.Conduit.List,
-as well as a convenient Conduit module.")
-    (license license:expat)))
-
-(define-public ghc-aws
-  (package
-    (name "ghc-aws")
-    (version "0.20")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "aws-" version "/aws-" version ".tar.gz"))
-       (sha256 (base32
-                "0pwpabmypi1w8rni9qfwabgn95jks4h8dyw6889mn8xzsrhdhyf0"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f)) ; Tests require AWS credentials.
-    (inputs
-     `(("ghc-aeson" ,ghc-aeson)
-       ("ghc-attoparsec" ,ghc-attoparsec)
-       ("ghc-base16-bytestring" ,ghc-base16-bytestring)
-       ("ghc-base64-bytestring" ,ghc-base64-bytestring)
-       ("ghc-blaze-builder" ,ghc-blaze-builder)
-       ("ghc-byteable" ,ghc-byteable)
-       ("ghc-case-insensitive" ,ghc-case-insensitive)
-       ("ghc-cereal" ,ghc-cereal)
-       ("ghc-conduit" ,ghc-conduit)
-       ("ghc-conduit-extra" ,ghc-conduit-extra)
-       ("ghc-cryptonite" ,ghc-cryptonite)
-       ("ghc-data-default" ,ghc-data-default)
-       ("ghc-http-conduit" ,ghc-http-conduit)
-       ("ghc-http-types" ,ghc-http-types)
-       ("ghc-lifted-base" ,ghc-lifted-base)
-       ("ghc-monad-control" ,ghc-monad-control)
-       ("ghc-network" ,ghc-network)
-       ("ghc-old-locale" ,ghc-old-locale)
-       ("ghc-safe" ,ghc-safe)
-       ("ghc-scientific" ,ghc-scientific)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-utf8-string" ,ghc-utf8-string)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-xml-conduit" ,ghc-xml-conduit)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-errors" ,ghc-errors)
-       ("ghc-http-client" ,ghc-http-client)
-       ("ghc-http-client-tls" ,ghc-http-client-tls)
-       ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-conduit-combinators" ,ghc-conduit-combinators)))
-    (home-page "https://github.com/aristidb/aws")
-    (synopsis "Amazon Web Services for Haskell")
-    (description "This package attempts to provide support for using
-Amazon Web Services like S3 (storage), SQS (queuing) and others to
-Haskell programmers.  The ultimate goal is to support all Amazon
-Web Services.")
-    (license license:bsd-3)))
-
-(define-public ghc-basement
-  (package
-    (name "ghc-basement")
-    (version "0.0.8")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "basement/basement-" version ".tar.gz"))
-       (sha256
-        (base32
-         "194jw567di4q2758943q9rrwkbf9gl261my7qc21i9xhyabipx67"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/haskell-foundation/foundation")
-    (synopsis "Basic primitives for Foundation starter pack")
-    (description
-     "This package contains basic primitives for the Foundation set of
-packages.")
-    (license license:bsd-3)))
-
-(define-public ghc-foundation
-  (package
-    (name "ghc-foundation")
-    (version "0.0.21")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "foundation/foundation-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1q43y8wfj0wf9gdq2kzphwjwq6m5pvryy1lqgk954aq5z3ks1lsf"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-basement" ,ghc-basement)))
-    (home-page "https://github.com/haskell-foundation/foundation")
-    (synopsis "Alternative prelude with batteries and no dependencies")
-    (description
-     "This package provides a custom prelude with no dependencies apart from
-the base package.
-
-Foundation has the following goals:
-
-@enumerate
-@item provide a base like sets of modules that provide a consistent set of
-   features and bugfixes across multiple versions of GHC (unlike base).
-@item provide a better and more efficient prelude than base's prelude.
-@item be self-sufficient: no external dependencies apart from base;
-@item provide better data-types: packed unicode string by default, arrays;
-@item Numerical classes that better represent mathematical things (no more
-   all-in-one @code{Num});
-@item I/O system with less lazy IO.
-@end enumerate\n")
-    (license license:bsd-3)))
-
-(define-public ghc-stm-chans
-  (package
-    (name "ghc-stm-chans")
-    (version "3.0.0.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "stm-chans-" version "/"
-                           "stm-chans-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0f27sp09yha43xk9q55sc185jyjs5h7gq2dhsyx6bm9kz9dzqi13"))))
-    (build-system haskell-build-system)
-    (home-page "https://hackage.haskell.org/package/stm-chans")
-    (synopsis "Additional types of channels for ghc-stm")
-    (description "This Haskell package offers a collection of channel types,
-similar to @code{Control.Concurrent.STM.@{TChan,TQueue@}} but with additional
-features.")
-    (license license:bsd-3)))
-
-(define-public ghc-monad-loops
-  (package
-    (name "ghc-monad-loops")
-    (version "0.4.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "monad-loops-" version "/"
-                           "monad-loops-" version ".tar.gz"))
-       (sha256
-        (base32
-         "062c2sn3hc8h50p1mhqkpyv6x8dydz2zh3ridvlfjq9nqimszaky"))))
-    (build-system haskell-build-system)
-    (native-inputs `(("ghc-tasty" ,ghc-tasty)
-                     ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
-    (home-page "https://github.com/mokus0/monad-loops")
-    (synopsis "Monadic loops for Haskell")
-    (description "This Haskell package provides some useful control
-operators for looping.")
-    (license license:public-domain)))
-
-(define-public ghc-monad-logger
-  (package
-    (name "ghc-monad-logger")
-    (version "0.3.29")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "monad-logger-" version "/"
-                           "monad-logger-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1z516s4pa9n94zf0l45mylssg07xr1d1m6zrz900p0iv3vfd07mv"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-transformers-compat" ,ghc-transformers-compat)
-              ("ghc-stm-chans" ,ghc-stm-chans)
-              ("ghc-lifted-base" ,ghc-lifted-base)
-              ("ghc-resourcet" ,ghc-resourcet)
-              ("ghc-conduit" ,ghc-conduit)
-              ("ghc-conduit-extra" ,ghc-conduit-extra)
-              ("ghc-fast-logger" ,ghc-fast-logger)
-              ("ghc-transformers-base" ,ghc-transformers-base)
-              ("ghc-monad-control" ,ghc-monad-control)
-              ("ghc-monad-loops" ,ghc-monad-loops)
-              ("ghc-blaze-builder" ,ghc-blaze-builder)
-              ("ghc-exceptions" ,ghc-exceptions)))
-    (home-page "https://github.com/kazu-yamamoto/logger")
-    (synopsis "Provides a class of monads which can log messages for Haskell")
-    (description "This Haskell package uses a monad transformer approach
-for logging.
-
-This package provides Template Haskell functions for determining source
-code locations of messages.")
-    (license license:expat)))
-
-(define-public ghc-shakespeare
-  (package
-    (name "ghc-shakespeare")
-    (version "2.0.15")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "shakespeare-" version "/"
-                           "shakespeare-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1vk4b19zvwy4mpwaq9z3l3kfmz75gfyf7alhh0y112gspgpccm23"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-aeson" ,ghc-aeson)
-              ("ghc-blaze-markup" ,ghc-blaze-markup)
-              ("ghc-blaze-html" ,ghc-blaze-html)
-              ("ghc-exceptions" ,ghc-exceptions)
-              ("ghc-vector" ,ghc-vector)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)
-              ("ghc-scientific" ,ghc-scientific)))
-    (native-inputs `(("ghc-hspec" ,ghc-hspec)
-                     ("ghc-hunit" ,ghc-hunit)
-                     ("hspec-discover" ,hspec-discover)))
-    (home-page "https://www.yesodweb.com/book/shakespearean-templates")
-    (synopsis "Family of type-safe template languages for Haskell")
-    (description "This Haskell package provides a family of type-safe
-templates with simple variable interpolation.  Shakespeare templates can
-be used inline with a quasi-quoter or in an external file and it
-interpolates variables according to the type being inserted.")
-    (license license:expat)))
-
-(define-public ghc-securemem
-  (package
-    (name "ghc-securemem")
-    (version "0.1.10")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "securemem-" version "/"
-                           "securemem-" version ".tar.gz"))
-       (sha256
-        (base32
-         "19hnw2cfbsfjynxq1bq9f6djbxhsc1k751ml0y1ab3ah913mm29j"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-byteable" ,ghc-byteable)
-              ("ghc-memory" ,ghc-memory)))
-    (home-page "https://github.com/vincenthz/hs-securemem")
-    (synopsis "Auto-scrubbing and const-time-eq memory chunk abstraction for
-Haskell")
-    (description "SecureMem is similar to ByteString, except that it provides
-a memory chunk that will be auto-scrubbed after it run out of scope.")
-    (license license:bsd-3)))
-
-(define-public ghc-resource-pool
-  (package
-    (name "ghc-resource-pool")
-    (version "0.2.3.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "resource-pool-" version "/"
-                           "resource-pool-" version ".tar.gz"))
-       (sha256
-        (base32
-         "04mw8b9djb14zp4rdi6h7mc3zizh597ffiinfbr4m0m8psifw9w6"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-hashable" ,ghc-hashable)
-              ("ghc-monad-control" ,ghc-monad-control)
-              ("ghc-transformers-base" ,ghc-transformers-base)
-              ("ghc-vector" ,ghc-vector)))
-    (home-page "https://github.com/bos/pool")
-    (synopsis "Striped resource pooling implementation in Haskell")
-    (description "This Haskell package provides striped pooling abstraction
-for managing flexibly-sized collections of resources such as database
-connections.")
-    (license license:bsd-3)))
-
-(define-public ghc-attoparsec-iso8601
-  (package
-    (name "ghc-attoparsec-iso8601")
-    (version "1.0.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "attoparsec-iso8601-" version "/"
-                           "attoparsec-iso8601-" version ".tar.gz"))
-       (sha256
-        (base32
-         "12l55b76bhya9q89mfmqmy6sl5v39b6gzrw5rf3f70vkb23nsv5a"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("1" "06f7pgmmc8456p3hc1y23kz1y127gfczy7s00wz1rls9g2sm2vi4")))
-    (inputs `(("ghc-attoparsec" ,ghc-attoparsec)
-              ("ghc-base-compat" ,ghc-base-compat)))
-    (home-page "https://github.com/bos/aeson")
-    (synopsis "Parse ISO 8601 dates")
-    (description "Haskell library for parsing of ISO 8601 dates, originally
-from aeson.")
-    (license license:bsd-3)))
-
-(define-public ghc-generics-sop
-  (package
-    (name "ghc-generics-sop")
-    (version "0.3.2.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "generics-sop-" version "/"
-                           "generics-sop-" version ".tar.gz"))
-       (sha256
-        (base32
-         "168v62i845jh9jbfaz3ldz8svz4wmzq9mf2vhb7pxlnbkk8fqq1h"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (home-page "https://github.com/well-typed/generics-sop")
-    (synopsis "Generic Programming using True Sums of Products for Haskell")
-    (description "This Haskell package supports the definition of generic
-functions.  Datatypes are viewed in a uniform, structured way: the choice
-between constructors is represented using an n-ary sum, and the arguments of
-each constructor are represented using an n-ary product.")
-    (license license:bsd-3)))
-
-(define-public ghc-uri-bytestring
-  (package
-    (name "ghc-uri-bytestring")
-    (version "0.3.2.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "uri-bytestring-" version "/"
-                           "uri-bytestring-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1q04j5ybvk37zk2m0bkjwyhblz0ymdj0cn4rvsvdca1ikn5xdv5c"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-attoparsec" ,ghc-attoparsec)
-              ("ghc-fail" ,ghc-fail)
-              ("ghc-blaze-builder" ,ghc-blaze-builder)
-              ("ghc-th-lift-instances" ,ghc-th-lift-instances)))
-    (native-inputs `(("ghc-attoparsec" ,ghc-attoparsec)
-                     ("ghc-hunit" ,ghc-hunit)
-                     ("ghc-quickcheck" ,ghc-quickcheck)
-                     ("ghc-tasty" ,ghc-tasty)
-                     ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-                     ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)
-                     ("ghc-base-compat" ,ghc-base-compat)
-                     ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)
-                     ("ghc-semigroups" ,ghc-semigroups)
-                     ("ghc-generics-sop" ,ghc-generics-sop)))
-    (home-page "https://github.com/Soostone/uri-bytestring")
-    (synopsis "Haskell URI parsing as ByteStrings")
-    (description "This Haskell package aims to be an RFC3986 compliant URI
-parser that uses ByteStrings for parsing and representing the URI data.")
-    (license license:bsd-3)))
-
-(define-public ghc-http-api-data
-  (package
-    (name "ghc-http-api-data")
-    (version "0.3.8.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "http-api-data-" version "/"
-                           "http-api-data-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1cq6459b8wz6nvkvpi89dg189n5q2xdq4rdq435hf150555vmskf"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f))  ;  FIXME: Tests require QuickCheck >= 2.9
-    (inputs `(("ghc-attoparsec" ,ghc-attoparsec)
-              ("ghc-attoparsec-iso8601" ,ghc-attoparsec-iso8601)
-              ("ghc-hashable" ,ghc-hashable)
-              ("ghc-http-types" ,ghc-http-types)
-              ("ghc-time-locale-compat" ,ghc-time-locale-compat)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)
-              ("ghc-uri-bytestring" ,ghc-uri-bytestring)
-              ("ghc-uuid-types" ,ghc-uuid-types)))
-    (home-page "https://github.com/fizruk/http-api-data")
-    (synopsis "Convert to/from HTTP API data like URL pieces, headers and
-query parameters")
-    (description "This Haskell package defines typeclasses used for converting
-Haskell data types to and from HTTP API data.")
-    (license license:bsd-3)))
-
-(define-public ghc-persistent
-  (package
-    (name "ghc-persistent")
-    (version "2.8.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "persistent-" version "/"
-                           "persistent-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1h0yijbf1yiwl50klyafy4ln99j8bib4kgbzviw7fc4y4mwv4sv9"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-old-locale" ,ghc-old-locale)
-              ("ghc-conduit" ,ghc-conduit)
-              ("ghc-resourcet" ,ghc-resourcet)
-              ("ghc-exceptions" ,ghc-exceptions)
-              ("ghc-monad-control" ,ghc-monad-control)
-              ("ghc-lifted-base" ,ghc-lifted-base)
-              ("ghc-resource-pool" ,ghc-resource-pool)
-              ("ghc-path-pieces" ,ghc-path-pieces)
-              ("ghc-http-api-data" ,ghc-http-api-data)
-              ("ghc-aeson" ,ghc-aeson)
-              ("ghc-monad-logger" ,ghc-monad-logger)
-              ("ghc-transformers-base" ,ghc-transformers-base)
-              ("ghc-base64-bytestring" ,ghc-base64-bytestring)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)
-              ("ghc-vector" ,ghc-vector)
-              ("ghc-attoparsec" ,ghc-attoparsec)
-              ("ghc-haskell-src-meta" ,ghc-haskell-src-meta)
-              ("ghc-blaze-html" ,ghc-blaze-html)
-              ("ghc-blaze-markup" ,ghc-blaze-markup)
-              ("ghc-silently" ,ghc-silently)
-              ("ghc-fast-logger" ,ghc-fast-logger)
-              ("ghc-scientific" ,ghc-scientific)
-              ("ghc-tagged" ,ghc-tagged)
-              ("ghc-void" ,ghc-void)))
-    (native-inputs `(("ghc-hspec" ,ghc-hspec)))
-    (home-page "https://www.yesodweb.com/book/persistent")
-    (synopsis "Type-safe, multi-backend data serialization for Haskell")
-    (description "This Haskell package allows Haskell programs to access data
-storage systems like PostgreSQL, SQLite, MySQL and MongoDB in a type-safe
-way.")
-    (license license:expat)))
-
-(define-public ghc-aeson-compat
-  (package
-    (name "ghc-aeson-compat")
-    (version "0.3.8")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "aeson-compat-" version "/"
-                           "aeson-compat-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0j4v13pgk21zy8hqkbx8hw0n05jdl17qphxz9rj4h333pr547r3i"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f))  ;  FIXME: Tests require QuickCheck >= 2.10
-    (inputs `(("ghc-base-compat" ,ghc-base-compat)
-              ("ghc-aeson" ,ghc-aeson)
-              ("ghc-attoparsec" ,ghc-attoparsec)
-              ("ghc-attoparsec" ,ghc-attoparsec-iso8601)
-              ("ghc-exceptions" ,ghc-exceptions)
-              ("ghc-hashable" ,ghc-hashable)
-              ("ghc-scientific" ,ghc-scientific)
-              ("ghc-time-locale-compat" ,ghc-time-locale-compat)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)
-              ("ghc-vector" ,ghc-vector)
-              ("ghc-tagged" ,ghc-tagged)
-              ("ghc-semigroups" ,ghc-semigroups)
-              ("ghc-nats" ,ghc-nats)))
-    (home-page "https://github.com/phadej/aeson-compat")
-    (synopsis "Compatibility layer for ghc-aeson")
-    (description "This Haskell package provides compatibility layer for
-ghc-aeson.")
-    (license license:bsd-3)))
-
-(define-public ghc-persistent-template
-  (package
-    (name "ghc-persistent-template")
-    (version "2.5.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "persistent-template-" version "/"
-                           "persistent-template-" version ".tar.gz"))
-       (sha256
-        (base32
-         "008afcy7zbw7bzp9jww8gdldb51kfm0fg4p0x4xcp61gx4679bjc"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("2" "03qgwk32krldph3blw5agiqcpccr3649hajyn8wm9k71zz82dpn6")))
-    (inputs `(("ghc-persistent" ,ghc-persistent)
-              ("ghc-monad-control" ,ghc-monad-control)
-              ("ghc-aeson" ,ghc-aeson)
-              ("ghc-aeson-compat" ,ghc-aeson-compat)
-              ("ghc-monad-logger" ,ghc-monad-logger)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)
-              ("ghc-tagged" ,ghc-tagged)
-              ("ghc-path-pieces" ,ghc-path-pieces)
-              ("ghc-http-api-data" ,ghc-http-api-data)))
-    (native-inputs `(("ghc-hspec" ,ghc-hspec)
-                     ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://www.yesodweb.com/book/persistent")
-    (synopsis "Type-safe, non-relational, multi-backend persistence")
-    (description "This Haskell package provides interfaces and helper
-functions for the ghc-persistent package.")
-    (license license:expat)))
-
-(define-public ghc-unliftio-core
-  (package
-    (name "ghc-unliftio-core")
-    (version "0.1.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "unliftio-core-" version "/"
-                           "unliftio-core-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1193fplsjm1lcr05xwvkj1rsyzx74i755f6kw3ikmxbsv0bv0l3m"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("1" "16bjwcsaghqqmyi69rq65dn3ydifyfaabq3ns37apdm00mwqbcj2")))
-    (home-page
-     "https://github.com/fpco/unliftio/tree/master/unliftio-core#readme")
-    (synopsis "The MonadUnliftIO typeclass for unlifting monads to IO")
-    (description "This Haskell package provides the core @code{MonadUnliftIO}
-typeclass, instances for base and transformers, and basic utility
-functions.")
-    (license license:expat)))
-
-(define-public ghc-microlens
-  (package
-    (name "ghc-microlens")
-    (version "0.4.9.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "microlens-" version "/"
-                           "microlens-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0j2nzf0vpx2anvsrg2w0vy2z4jn3kkcs2n6glkzblhn1j9piqh51"))))
-    (build-system haskell-build-system)
-    (home-page
-     "https://github.com/aelve/microlens")
-    (synopsis "Provides a tiny lens Haskell library with no dependencies")
-    (description "This Haskell package provides a lens library, just like
-@code{ghc-lens}, but smaller.  It provides essential lenses and
-traversals (like @code{_1} and @code{_Just}), as well as ones which are simply
-nice to have (like @code{each}, @code{at}, and @code{ix}), and some
-combinators (like @code{failing} and @code{singular}), but everything else is
-stripped.  As the result, this package has no dependencies.")
-    (license license:bsd-3)))
-
-(define-public ghc-microlens-th
-  (package
-    (name "ghc-microlens-th")
-    (version "0.4.2.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "microlens-th-" version "/"
-                           "microlens-th-" version ".tar.gz"))
-       (sha256
-        (base32
-         "02nj7lnl61yffi3c6wn341arxhld5r0vj6nzcb5zmqjhnqsv8c05"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-microlens" ,ghc-microlens)
-              ("ghc-th-abstraction" ,ghc-th-abstraction)))
-    (home-page
-     "https://github.com/aelve/microlens")
-    (synopsis "Automatic generation of record lenses for
-@code{ghc-microlens}")
-    (description "This Haskell package lets you automatically generate lenses
-for data types; code was extracted from the lens package, and therefore
-generated lenses are fully compatible with ones generated by lens (and can be
-used both from lens and microlens).")
-    (license license:bsd-3)))
-
-(define-public ghc-unliftio
-  (package
-    (name "ghc-unliftio")
-    (version "0.2.7.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/unliftio/unliftio-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0qql93lq5w7qghl454cc3s1i8v1jb4h08n82fqkw0kli4g3g9njs"))))
-    (build-system haskell-build-system)
-    (arguments `(#:tests? #f)) ; FIXME: hspec-discover not in PATH
-    (inputs
-     `(("ghc-async" ,ghc-async)
-       ("ghc-unliftio-core" ,ghc-unliftio-core)))
-    (native-inputs `(("ghc-hspec" ,ghc-hspec)))
-    (home-page "https://github.com/fpco/unliftio")
-    (synopsis "Provides MonadUnliftIO typecplass for unlifting monads to
-IO (batteries included)")
-    (description "This Haskell package provides the core @code{MonadUnliftIO}
-typeclass, a number of common instances, and a collection of common functions
-working with it.")
-    (license license:expat)))
-
-(define-public ghc-persistent-sqlite
-  (package
-    (name "ghc-persistent-sqlite")
-    (version "2.8.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "persistent-sqlite-" version "/"
-                           "persistent-sqlite-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1chbmvjz46smhgnzhha3bbkhys3fys6dip1jr4v7xp1jf78zbyp6"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-persistent" ,ghc-persistent)
-              ("ghc-unliftio-core" ,ghc-unliftio-core)
-              ("ghc-aeson" ,ghc-aeson)
-              ("ghc-conduit" ,ghc-conduit)
-              ("ghc-monad-logger" ,ghc-monad-logger)
-              ("ghc-microlens-th" ,ghc-microlens-th)
-              ("ghc-resourcet" ,ghc-resourcet)
-              ("ghc-old-locale" ,ghc-old-locale)
-              ("ghc-resource-pool" ,ghc-resource-pool)
-              ("ghc-unordered-containers" ,ghc-unordered-containers)))
-    (native-inputs `(("ghc-hspec" ,ghc-hspec)
-                     ("ghc-persistent-template" ,ghc-persistent-template)
-                     ("ghc-temporary" ,ghc-temporary)))
-    (home-page
-     "https://www.yesodweb.com/book/persistent")
-    (synopsis "Backend for the persistent library using sqlite3")
-    (description "This Haskell package includes a thin sqlite3 wrapper based
-on the direct-sqlite package, as well as the entire C library, so there are no
-system dependencies.")
-    (license license:expat)))
-
-(define-public ghc-email-validate
-  (package
-    (name "ghc-email-validate")
-    (version "2.3.2.6")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/"
-             "email-validate/email-validate-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0chgylvc8xmhp933rdbmpg5sv4y7yg2h6kbf0ip1dzmbd5p55pa5"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-attoparsec" ,ghc-attoparsec)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-doctest" ,ghc-doctest)))
-    (home-page
-     "https://github.com/Porges/email-validate-hs")
-    (synopsis "Email address validator for Haskell")
-    (description
-     "This Haskell package provides a validator that can validate an email
-address string against RFC 5322.")
-    (license license:bsd-3)))
-
-(define-public ghc-bytes
-  (package
-   (name "ghc-bytes")
-   (version "0.15.5")
-   (source
-    (origin
-     (method url-fetch)
-     (uri
-      (string-append "https://hackage.haskell.org/package/bytes-"
-                     version "/bytes-"
-                     version ".tar.gz"))
-     (file-name (string-append name "-" version ".tar.gz"))
-     (sha256
-      (base32
-       "063il2vrn0p88r9gzndh4ijs0mxj37khkc9ym9bqdsv7ngk3b683"))))
-   (build-system haskell-build-system)
-   (inputs `(("ghc-cereal" ,ghc-cereal)
-             ("cabal-doctest" ,cabal-doctest)
-             ("ghc-doctest" ,ghc-doctest)
-             ("ghc-scientific" ,ghc-scientific)
-             ("ghc-transformers-compat" ,ghc-transformers-compat)
-             ("ghc-unordered-containers" ,ghc-unordered-containers)
-             ("ghc-void" ,ghc-void)
-             ("ghc-vector" ,ghc-vector)))
-   (synopsis "Serialization between @code{binary} and @code{cereal}")
-   (description "This package provides a simple compatibility shim that lets
-you work with both @code{binary} and @code{cereal} with one chunk of
-serialization code.")
-   (home-page "https://hackage.haskell.org/package/bytes")
-   (license license:bsd-3)))
-
-(define-public ghc-disk-free-space
-  (package
-    (name "ghc-disk-free-space")
-    (version "0.1.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "disk-free-space/disk-free-space-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "07rqj8k1vh3cykq9yidpjxhgh1f7vgmjs6y1nv5kq2217ff4yypi"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/redneb/disk-free-space")
-    (synopsis "Retrieve information about disk space usage")
-    (description "A cross-platform library for retrieving information about
-disk space usage.")
-    (license license:bsd-3)))
-
-(define-public ghc-xdg-basedir
-  (package
-    (name "ghc-xdg-basedir")
-    (version "0.2.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/xdg-basedir/"
-             "xdg-basedir-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0azlzaxp2dn4l1nr7shsxah2magk1szf6fx0mv75az00qsjw6qg4"))))
-    (build-system haskell-build-system)
-    (home-page "http://github.com/willdonnelly/xdg-basedir")
-    (synopsis "XDG Base Directory library for Haskell")
-    (description "This package provides a library implementing the XDG Base Directory spec.")
-    (license license:bsd-3)))
-
-(define-public ghc-errorcall-eq-instance
-  (package
-    (name "ghc-errorcall-eq-instance")
-    (version "0.3.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "errorcall-eq-instance/errorcall-eq-instance-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0hqw82m8bbrxy5vgdwb83bhzdx070ibqrm9rshyja7cb808ahijm"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-base-orphans" ,ghc-base-orphans)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "http://hackage.haskell.org/package/errorcall-eq-instance")
-    (synopsis "Orphan Eq instance for ErrorCall")
-    (description
-     "Prior to @code{base-4.7.0.0} there was no @code{Eq} instance for @code{ErrorCall}.
-This package provides an orphan instance.")
-    (license license:expat)))
-
-(define-public ghc-missingh
-  (package
-    (name "ghc-missingh")
-    (version "1.4.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/MissingH/"
-                           "MissingH-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0wcvgrmav480w7nf4bl14yi0jq2yzanysxwzwas9hpb28vyjlgr8"))))
-    (build-system haskell-build-system)
-    ;; Tests require the unmaintained testpack package, which depends on the
-    ;; outdated QuickCheck version 2.7, which can no longer be built with
-    ;; recent versions of GHC and Haskell libraries.
-    (arguments '(#:tests? #f))
-    (inputs
-     `(("ghc-network" ,ghc-network)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-regex-compat" ,ghc-regex-compat)
-       ("ghc-hslogger" ,ghc-hslogger)
-       ("ghc-random" ,ghc-random)
-       ("ghc-old-time" ,ghc-old-time)
-       ("ghc-old-locale" ,ghc-old-locale)))
-    (native-inputs
-     `(("ghc-errorcall-eq-instance" ,ghc-errorcall-eq-instance)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hunit" ,ghc-hunit)))
-    (home-page "http://software.complete.org/missingh")
-    (synopsis "Large utility library")
-    (description
-     "MissingH is a library of all sorts of utility functions for Haskell
-programmers.  It is written in pure Haskell and thus should be extremely
-portable and easy to use.")
-    (license license:bsd-3)))
-
-(define-public ghc-intervalmap
-  (package
-    (name "ghc-intervalmap")
-    (version "0.6.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/IntervalMap/"
-                           "IntervalMap-" version ".tar.gz"))
-       (sha256
-        (base32
-         "06hin9wf1by8aqa7820fsi2339bh82184frkwz3jsb9sqa0hszcg"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "http://www.chr-breitkopf.de/comp/IntervalMap")
-    (synopsis "Containers for intervals, with efficient search")
-    (description
-     "This package provides ordered containers of intervals, with efficient
-search for all keys containing a point or overlapping an interval.  See the
-example code on the home page for a quick introduction.")
-    (license license:bsd-3)))
-
-(define-public ghc-operational
-  (package
-    (name "ghc-operational")
-    (version "0.2.3.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/operational/"
-                           "operational-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1x2abg2q9d26h1vzj40r6k7k3gqgappbs4g9d853vvg77837km4i"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-random" ,ghc-random)))
-    (home-page "http://wiki.haskell.org/Operational")
-    (synopsis "Implementation of difficult monads made easy with operational semantics")
-    (description
-     "This library makes it easy to implement monads with tricky control
-flow. This is useful for: writing web applications in a sequential style,
-programming games with a uniform interface for human and AI players and easy
-replay capababilities, implementing fast parser monads, designing monadic
-DSLs, etc.")
-    (license license:bsd-3)))
-
-(define-public ghc-gtk2hs-buildtools
-  (package
-    (name "ghc-gtk2hs-buildtools")
-    (version "0.13.4.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "gtk2hs-buildtools/gtk2hs-buildtools-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0yg6xmylgpylmnh5g33qwwn5x9bqckdvvv4czqzd9vrr12lnnghg"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-random" ,ghc-random)
-       ("ghc-hashtables" ,ghc-hashtables)))
-    (native-inputs
-     `(("ghc-alex" ,ghc-alex)
-       ("ghc-happy" ,ghc-happy)))
-    (home-page "http://projects.haskell.org/gtk2hs/")
-    (synopsis "Tools to build the Gtk2Hs suite of user interface libraries")
-    (description
-     "This package provides a set of helper programs necessary to build the
-Gtk2Hs suite of libraries. These tools include a modified c2hs binding tool
-that is used to generate FFI declarations, a tool to build a type hierarchy
-that mirrors the C type hierarchy of GObjects found in glib, and a generator
-for signal declarations that are used to call back from C to Haskell. These
-tools are not needed to actually run Gtk2Hs programs.")
-    (license license:gpl2)))
-
-(define-public ghc-chart
-  (package
-    (name "ghc-chart")
-    (version "1.9")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/Chart/"
-                           "Chart-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1f5azj17y8xsb3gjhf7gg1gnnlq12rxkmfjmgcly314d7vghs05z"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-old-locale" ,ghc-old-locale)
-       ("ghc-lens" ,ghc-lens)
-       ("ghc-colour" ,ghc-colour)
-       ("ghc-data-default-class" ,ghc-data-default-class)
-       ("ghc-operational" ,ghc-operational)
-       ("ghc-vector" ,ghc-vector)))
-    (home-page "https://github.com/timbod7/haskell-chart/wiki")
-    (synopsis "Library for generating 2D charts and plots")
-    (description
-     "This package provides a library for generating 2D charts and plots, with
-backends provided by the @code{Cairo} and @code{Diagrams} libraries.")
-    (license license:bsd-3)))
-
-(define-public ghc-wcwidth
-  (package
-    (name "ghc-wcwidth")
-    (version "0.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/wcwidth/wcwidth-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "1n1fq7v64b59ajf5g50iqj9sa34wm7s2j3viay0kxpmvlcv8gipz"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-setlocale" ,ghc-setlocale)
-       ("ghc-utf8-string" ,ghc-utf8-string)
-       ("ghc-attoparsec" ,ghc-attoparsec)))
-    (home-page "https://github.com/solidsnack/wcwidth/")
-    (synopsis "Haskell bindings to wcwidth")
-    (description "This package provides Haskell bindings to your system's
-native wcwidth and a command line tool to examine the widths assigned by it.
-The command line tool can compile a width table to Haskell code that assigns
-widths to the Char type.")
-    (license license:bsd-3)))
-
-(define-public ghc-wcwidth-bootstrap
-  (package
-    (inherit ghc-wcwidth)
-    (name "ghc-wcwidth-bootstrap")
-    (inputs
-     `(("ghc-setlocale" ,ghc-setlocale)
-       ("ghc-utf8-string" ,ghc-utf8-string)
-       ("ghc-attoparsec" ,ghc-attoparsec-bootstrap)))
-    (properties '(hidden? #t))))
-
-(define-public ghc-rio
-  (package
-    (name "ghc-rio")
-    (version "0.1.5.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/rio/rio-"
-             version ".tar.gz"))
-       (sha256
-        (base32
-         "064h8a4hp53a479d3ak0vmqbx8hi0cpg7zn4wp23rjy26dka8p7g"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-microlens" ,ghc-microlens)
-       ("ghc-primitive" ,ghc-primitive)
-       ("ghc-typed-process" ,ghc-typed-process)
-       ("ghc-unliftio" ,ghc-unliftio)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-vector" ,ghc-vector)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/commercialhaskell/rio#readme")
-    (synopsis "A standard library for Haskell")
-    (description "This package works as a prelude replacement for Haskell,
-providing more functionality and types out of the box than the standard
-prelude (such as common data types like @code{ByteString} and
-@code{Text}), as well as removing common ``gotchas'', like partial
-functions and lazy I/O.  The guiding principle here is:
-@itemize
-@item If something is safe to use in general and has no expected naming
-conflicts, expose it.
-@item If something should not always be used, or has naming conflicts,
-expose it from another module in the hierarchy.
-@end itemize")
-    (license license:expat)))
-
-(define-public ghc-cairo
-  (package
-    (name "ghc-cairo")
-    (version "0.13.5.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/cairo/"
-                           "cairo-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1wxylv4d8120ri0vgar168ikqa9m6533ipdwi38qlmxmw20ws2j2"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:modules ((guix build haskell-build-system)
-                  (guix build utils)
-                  (ice-9 match)
-                  (srfi srfi-26))
-       #:phases
-       (modify-phases %standard-phases
-         ;; FIXME: This is a copy of the standard configure phase with a tiny
-         ;; difference: this package needs the -package-db flag to be passed
-         ;; to "runhaskell" in addition to the "configure" action, because it
-         ;; depends on gtk2hs-buildtools, which provide setup hooks.  Without
-         ;; this option the Setup.hs file cannot be evaluated.  The
-         ;; haskell-build-system should be changed to pass "-package-db" to
-         ;; "runhaskell" in any case.
-         (replace 'configure
-           (lambda* (#:key outputs inputs tests? (configure-flags '())
-                     #:allow-other-keys)
-             (let* ((out (assoc-ref outputs "out"))
-                    (name-version (strip-store-file-name out))
-                    (input-dirs (match inputs
-                                  (((_ . dir) ...)
-                                   dir)
-                                  (_ '())))
-                    (ghc-path (getenv "GHC_PACKAGE_PATH"))
-                    (params (append `(,(string-append "--prefix=" out))
-                                    `(,(string-append "--libdir=" out "/lib"))
-                                    `(,(string-append "--bindir=" out "/bin"))
-                                    `(,(string-append
-                                        "--docdir=" out
-                                        "/share/doc/" name-version))
-                                    '("--libsubdir=$compiler/$pkg-$version")
-                                    '("--package-db=../package.conf.d")
-                                    '("--global")
-                                    `(,@(map
-                                         (cut string-append "--extra-include-dirs=" <>)
-                                         (search-path-as-list '("include") input-dirs)))
-                                    `(,@(map
-                                         (cut string-append "--extra-lib-dirs=" <>)
-                                         (search-path-as-list '("lib") input-dirs)))
-                                    (if tests?
-                                        '("--enable-tests")
-                                        '())
-                                    configure-flags)))
-               (unsetenv "GHC_PACKAGE_PATH")
-               (apply invoke "runhaskell" "-package-db=../package.conf.d"
-                      "Setup.hs" "configure" params)
-               (setenv "GHC_PACKAGE_PATH" ghc-path)
-               #t))))))
-    (inputs
-     `(("ghc-utf8-string" ,ghc-utf8-string)
-       ("cairo" ,cairo)))
-    (native-inputs
-     `(("ghc-gtk2hs-buildtools" ,ghc-gtk2hs-buildtools)
-       ("pkg-config" ,pkg-config)))
-    (home-page "http://projects.haskell.org/gtk2hs/")
-    (synopsis "Haskell bindings to the Cairo vector graphics library")
-    (description
-     "Cairo is a library to render high quality vector graphics.  There exist
-various backends that allows rendering to Gtk windows, PDF, PS, PNG and SVG
-documents, amongst others.")
-    (license license:bsd-3)))
-
-(define-public ghc-chart-cairo
-  (package
-    (name "ghc-chart-cairo")
-    (version "1.9")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/Chart-cairo/"
-                           "Chart-cairo-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0iany6lfyfb1cw0pxfs5aw5k0a6x41m6ql9ad9w59biwdckbsyqr"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-old-locale" ,ghc-old-locale)
-       ("ghc-cairo" ,ghc-cairo)
-       ("ghc-colour" ,ghc-colour)
-       ("ghc-data-default-class" ,ghc-data-default-class)
-       ("ghc-operational" ,ghc-operational)
-       ("ghc-lens" ,ghc-lens)
-       ("ghc-chart" ,ghc-chart)))
-    (home-page "https://github.com/timbod7/haskell-chart/wiki")
-    (synopsis "Cairo backend for Charts")
-    (description "This package provides a Cairo vector graphics rendering
-backend for the Charts library.")
-    (license license:bsd-3)))
-
-(define-public ghc-atomic-write
-  (package
-    (name "ghc-atomic-write")
-    (version "0.2.0.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/atomic-write/atomic-write-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1iaq0hprxcv0sl1sgwcgmm87zraf738va1bciwnx2jkk3k1v9iyv"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-temporary" ,ghc-temporary)
-       ("ghc-unix-compat" ,ghc-unix-compat)))
-    (native-inputs
-     `(("ghc-temporary" ,ghc-temporary)
-       ("ghc-unix-compat" ,ghc-unix-compat)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/stackbuilders/atomic-write")
-    (synopsis "Atomically write to a file")
-    (description
-     "Atomically write to a file on POSIX-compliant systems while preserving
-permissions.  @code{mv} is an atomic operation.  This makes it simple to write
-to a file atomically just by using the @code{mv} operation.  However, this
-will destroy the permissions on the original file.  This library preserves
-permissions while atomically writing to a file.")
-    (license license:expat)))
-
-(define-public ghc-cereal-conduit
-  (package
-    (name "ghc-cereal-conduit")
-    (version "0.8.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "cereal-conduit/cereal-conduit-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1srr7agvgfw78q5s1npjq5sgynvhjgllpihiv37ylkwqm4c4ap6r"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-conduit" ,ghc-conduit)
-       ("ghc-resourcet" ,ghc-resourcet)
-       ("ghc-cereal" ,ghc-cereal)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)))
-    (home-page "https://github.com/snoyberg/conduit")
-    (synopsis "Turn Data.Serialize Gets and Puts into Sources, Sinks, and Conduits")
-    (description
-     "This package turn @code{Data.Serialize} @code{Gets} and @code{Puts} into
-@code{Sources}, @code{Sinks}, and @code{Conduits}.")
-    (license license:bsd-3)))
-
-(define-public ghc-lzma
-  (package
-    (name "ghc-lzma")
-    (version "0.0.0.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/lzma/"
-                           "lzma-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0i416gqi8j55nd1pqbkxvf3f6hn6fjys6gq98lkkxphva71j30xg"))))
-    (build-system haskell-build-system)
-    (arguments
-     '(#:tests? #f ; requires older versions of QuickCheck and tasty.
-       #:cabal-revision
-       ("3" "1sify6gnsalyp6dakfzi0mdy5jcz2kcp9jsdsgkmxd40nfzgd44m")))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)
-       ("ghc-tasty-quickcheck" ,ghc-tasty-quickcheck)))
-    (home-page "https://github.com/hvr/lzma")
-    (synopsis "LZMA/XZ compression and decompression")
-    (description
-     "This package provides a pure interface for compressing and
-decompressing LZMA streams of data represented as lazy @code{ByteString}s.  A
-monadic incremental interface is provided as well.")
-    (license license:bsd-3)))
-
-(define-public ghc-stm-conduit
-  (package
-    (name "ghc-stm-conduit")
-    (version "4.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/stm-conduit/"
-                           "stm-conduit-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0paapljn7nqfzrx889y0n8sszci38mdiaxkgr0bb00ph9246rr7z"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-stm-chans" ,ghc-stm-chans)
-       ("ghc-cereal" ,ghc-cereal)
-       ("ghc-cereal-conduit" ,ghc-cereal-conduit)
-       ("ghc-conduit" ,ghc-conduit)
-       ("ghc-conduit-extra" ,ghc-conduit-extra)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-resourcet" ,ghc-resourcet)
-       ("ghc-async" ,ghc-async)
-       ("ghc-monad-loops" ,ghc-monad-loops)
-       ("ghc-unliftio" ,ghc-unliftio)))
-    (native-inputs
-     `(("ghc-doctest" ,ghc-doctest)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)))
-    (home-page "https://github.com/cgaebel/stm-conduit")
-    (synopsis "Introduces conduits to channels and promotes using conduits concurrently")
-    (description
-     "This package provides two simple conduit wrappers around STM channels: a
-source and a sink.")
-    (license license:bsd-3)))
-
-(define-public ghc-bindings-dsl
-  (package
-    (name "ghc-bindings-dsl")
-    (version "1.0.25")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/bindings-DSL/"
-                           "bindings-DSL-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0kqrd78nspl3lk4a0fqn47d8dirjg3b24dkvkigcrlb81hw35pk3"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/jwiegley/bindings-dsl/wiki")
-    (synopsis "FFI domain specific language, on top of hsc2hs")
-    (description
-     "This is a set of macros to be used when writing Haskell FFI.  They were
-designed to be able to fully describe C interfaces, so that @code{hsc2hs} can
-extract from them all Haskell code needed to mimic such interfaces.  All
-Haskell names used are automatically derived from C names, structures are
-mapped to Haskell instances of @code{Storable}, and there are also macros you
-can use with C code to help write bindings to inline functions or macro
-functions.")
-    (license license:bsd-3)))
-
-(define-public ghc-lzma-conduit
-  (package
-    (name "ghc-lzma-conduit")
-    (version "1.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/lzma-conduit/"
-                           "lzma-conduit-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0hm72da7xk9l3zxjh274yg444vf405djxqbkf3q3p2qhicmxlmg9"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-conduit" ,ghc-conduit)
-       ("ghc-lzma" ,ghc-lzma)
-       ("ghc-resourcet" ,ghc-resourcet)))
-    (native-inputs
-     `(("ghc-base-compat" ,ghc-base-compat)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-quickcheck2" ,ghc-test-framework-quickcheck2)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://github.com/alphaHeavy/lzma-conduit")
-    (synopsis "Conduit interface for lzma/xz compression")
-    (description
-     "This package provides a @code{Conduit} interface for the LZMA
-compression algorithm used in the @code{.xz} file format.")
-    (license license:bsd-3)))
-
-(define-public ghc-bzlib-conduit
-  (package
-    (name "ghc-bzlib-conduit")
-    (version "0.3.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/bzlib-conduit/"
-                           "bzlib-conduit-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0fd2hnr782s7qgipazg2yxwia9qqhkvm9bcm90773c3zkxa13n23"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-bindings-dsl" ,ghc-bindings-dsl)
-       ("ghc-conduit" ,ghc-conduit)
-       ("ghc-data-default-class" ,ghc-data-default-class)
-       ("ghc-resourcet" ,ghc-resourcet)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("ghc-random" ,ghc-random)))
-    (home-page "https://github.com/snoyberg/bzlib-conduit")
-    (synopsis "Streaming compression/decompression via conduits")
-    (description
-     "This package provides Haskell bindings to bzlib and Conduit support for
-streaming compression and decompression.")
-    (license license:bsd-3)))
-
-(define-public ghc-pqueue
-  (package
-    (name "ghc-pqueue")
-    (version "1.4.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "pqueue/pqueue-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1zvwm1zcqqq5n101s1brjhgbay8rf9fviq6gxbplf40i63m57p1x"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)))
-    (home-page "https://hackage.haskell.org/package/pqueue")
-    (synopsis "Reliable, persistent, fast priority queues")
-    (description
-     "This package provides a fast, reliable priority queue implementation
-based on a binomial heap.")
-    (license license:bsd-3)))
-
-(define-public ghc-conduit-algorithms
-  (package
-    (name "ghc-conduit-algorithms")
-    (version "0.0.8.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "conduit-algorithms/conduit-algorithms-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "07gx2q3d1bbfw14q41rmqg0i4m018pci10lswc0k1ij6lw7sb9fd"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-async" ,ghc-async)
-       ("ghc-bzlib-conduit" ,ghc-bzlib-conduit)
-       ("ghc-conduit" ,ghc-conduit)
-       ("ghc-conduit-combinators" ,ghc-conduit-combinators)
-       ("ghc-conduit-extra" ,ghc-conduit-extra)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-lzma-conduit" ,ghc-lzma-conduit)
-       ("ghc-monad-control" ,ghc-monad-control)
-       ("ghc-pqueue" ,ghc-pqueue)
-       ("ghc-resourcet" ,ghc-resourcet)
-       ("ghc-stm-conduit" ,ghc-stm-conduit)
-       ("ghc-streaming-commons" ,ghc-streaming-commons)
-       ("ghc-unliftio-core" ,ghc-unliftio-core)
-       ("ghc-vector" ,ghc-vector)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-th" ,ghc-test-framework-th)))
-    (home-page "https://github.com/luispedro/conduit-algorithms#readme")
-    (synopsis "Conduit-based algorithms")
-    (description
-     "This package provides algorithms on @code{Conduits}, including higher
-level asynchronous processing and some other utilities.")
-    (license license:expat)))
-
-(define-public ghc-interpolate
-  (package
-    (name "ghc-interpolate")
-    (version "0.2.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/interpolate/"
-                           "interpolate-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1gkaj98yz363v38fv78sqby236mp8yqwqcilx7kr2b9z0w3204bf"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-haskell-src-meta" ,ghc-haskell-src-meta)))
-    (native-inputs
-     `(("ghc-base-compat" ,ghc-base-compat)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-quickcheck-instances" ,ghc-quickcheck-instances)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/sol/interpolate")
-    (synopsis "String interpolation library")
-    (description "This package provides a string interpolation library for
-Haskell.")
-    (license license:expat)))
-
-(define-public ghc-hpack
-  (package
-    (name "ghc-hpack")
-    (version "0.28.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/hpack/"
-                           "hpack-" version ".tar.gz"))
-       (sha256
-        (base32
-         "18w0h76jdp3mk9vin8da9iz3cwhcxmw787xy8wlh8bxcpcr16q5r"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-aeson" ,ghc-aeson)
-       ("ghc-bifunctors" ,ghc-bifunctors)
-       ("ghc-cryptonite" ,ghc-cryptonite)
-       ("ghc-glob" ,ghc-glob)
-       ("ghc-http-client" ,ghc-http-client)
-       ("ghc-http-client-tls" ,ghc-http-client-tls)
-       ("ghc-http-types" ,ghc-http-types)
-       ("ghc-scientific" ,ghc-scientific)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-yaml" ,ghc-yaml)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-interpolate" ,ghc-interpolate)
-       ("ghc-mockery" ,ghc-mockery)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-temporary" ,ghc-temporary)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/sol/hpack")
-    (synopsis "Tools for an alternative Haskell package format")
-    (description
-     "Hpack is a format for Haskell packages.  It is an alternative to the
-Cabal package format and follows different design principles.  Hpack packages
-are described in a file named @code{package.yaml}.  Both @code{cabal2nix} and
-@code{stack} support @code{package.yaml} natively.  For other build tools the
-@code{hpack} executable can be used to generate a @code{.cabal} file from
-@code{package.yaml}.")
-    (license license:expat)))
-
-(define-public ghc-raw-strings-qq
-  (package
-    (name "ghc-raw-strings-qq")
-    (version "1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "raw-strings-qq/raw-strings-qq-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1lxy1wy3awf52968iy5y9r5z4qgnn2sxkdrh7js3m9gadb11w09f"))))
-    (build-system haskell-build-system)
-    (native-inputs `(("ghc-hunit" ,ghc-hunit)))
-    (home-page "https://github.com/23Skidoo/raw-strings-qq")
-    (synopsis "Raw string literals for Haskell")
-    (description
-     "This package provides a quasiquoter for raw string literals, i.e. string
-literals that don't recognise the standard escape sequences.  Basically, they
-make your code more readable by freeing you from the responsibility to escape
-backslashes.  They are useful when working with regular expressions,
-DOS/Windows paths and markup languages (such as XML).")
-    (license license:bsd-3)))
-
-(define-public ghc-inline-c
-  (package
-    (name "ghc-inline-c")
-    (version "0.6.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/inline-c/"
-                           "inline-c-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0vbfrsqsi7mdziqsnj68bsqlwbqxxhvrmy9rv6w8z18d1m8w3n6h"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-ansi-wl-pprint" ,ghc-ansi-wl-pprint)
-       ("ghc-cryptohash" ,ghc-cryptohash)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-parsers" ,ghc-parsers)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-vector" ,ghc-vector)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-raw-strings-qq" ,ghc-raw-strings-qq)
-       ("ghc-regex-posix" ,ghc-regex-posix)))
-    (home-page "http://hackage.haskell.org/package/inline-c")
-    (synopsis "Write Haskell source files including C code inline")
-    (description
-     "inline-c lets you seamlessly call C libraries and embed high-performance
-inline C code in Haskell modules.  Haskell and C can be freely intermixed in
-the same source file, and data passed to and from code in either language with
-minimal overhead.  No FFI required.")
-    (license license:expat)))
-
-(define-public ghc-weigh
-  (package
-    (name "ghc-weigh")
-    (version "0.0.12")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/weigh/"
-                           "weigh-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0zw2a997gxgdzqmd7j730kxgynzmjvvlkw84dajmfzf1v9pbij7x"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-split" ,ghc-split)
-       ("ghc-temporary" ,ghc-temporary)))
-    (home-page "https://github.com/fpco/weigh#readme")
-    (synopsis "Measure allocations of a Haskell functions/values")
-    (description "This package provides tools to measure the memory usage of a
-Haskell value or function.")
-    (license license:bsd-3)))
-
-(define-public ghc-linear
-  (package
-    (name "ghc-linear")
-    (version "1.20.8")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/linear/"
-                           "linear-" version ".tar.gz"))
-       (sha256
-        (base32
-         "046vkvxlb0s286qr55s0c6db0rlwbm1cmlmwhrrkqbkzhfcipgay"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-adjunctions" ,ghc-adjunctions)
-       ("ghc-base-orphans" ,ghc-base-orphans)
-       ("ghc-bytes" ,ghc-bytes)
-       ("ghc-cereal" ,ghc-cereal)
-       ("ghc-distributive" ,ghc-distributive)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-lens" ,ghc-lens)
-       ("ghc-reflection" ,ghc-reflection)
-       ("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-semigroupoids" ,ghc-semigroupoids)
-       ("ghc-tagged" ,ghc-tagged)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-vector" ,ghc-vector)
-       ("ghc-void" ,ghc-void)))
-    (native-inputs
-     `(("cabal-doctest" ,cabal-doctest)
-       ("ghc-doctest" ,ghc-doctest)
-       ("ghc-simple-reflect" ,ghc-simple-reflect)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-hunit" ,ghc-hunit)))
-    (home-page "http://github.com/ekmett/linear/")
-    (synopsis "Linear algebra library for Haskell")
-    (description
-     "This package provides types and combinators for linear algebra on free
-vector spaces.")
-    (license license:bsd-3)))
-
-(define-public ghc-safe-exceptions
-  (package
-    (name "ghc-safe-exceptions")
-    (version "0.1.7.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "safe-exceptions/safe-exceptions-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0sd0zfsm9pcll5bzzj523rbn45adjrnavdkz52hgmdjjgdcdrk8q"))))
-    (build-system haskell-build-system)
-    (arguments
-     '(#:cabal-revision
-       ("4" "0fid41gishzsyb47wzxhd5falandfirqcp760hcja81qjpfmqd32")))
-    (inputs `(("ghc-exceptions" ,ghc-exceptions)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("ghc-void" ,ghc-void)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/fpco/safe-exceptions")
-    (synopsis "Safe, consistent, and easy exception handling")
-    (description "Runtime exceptions - as exposed in @code{base} by the
-@code{Control.Exception} module - have long been an intimidating part of the
-Haskell ecosystem.  This package is intended to overcome this.  It provides a
-safe and simple API on top of the existing exception handling machinery.  The
-API is equivalent to the underlying implementation in terms of power but
-encourages best practices to minimize the chances of getting the exception
-handling wrong.")
-    (license license:expat)))
-
-(define-public ghc-inline-c-cpp
-  (package
-    (name "ghc-inline-c-cpp")
-    (version "0.2.2.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/inline-c-cpp/"
-                           "inline-c-cpp-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1rk7fmpkmxw9hhwr8df29kadnf0ybnwj64ggdbnsdrpfyhnkisci"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-inline-c" ,ghc-inline-c)
-       ("ghc-safe-exceptions" ,ghc-safe-exceptions)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)))
-    (home-page "https://hackage.haskell.org/package/inline-c-cpp")
-    (synopsis "Lets you embed C++ code into Haskell")
-    (description
-     "This package provides utilities to inline C++ code into Haskell using
-@code{inline-c}.")
-    (license license:expat)))
-
-(define-public ghc-bytestring-lexing
-  (package
-    (name "ghc-bytestring-lexing")
-    (version "0.5.0.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "bytestring-lexing/bytestring-lexing-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "0wrzniawhgpphc6yx1v972gyqxdbv0pizaz9bafahrshyb9svy81"))))
-    (build-system haskell-build-system)
-    (home-page "http://code.haskell.org/~wren/")
-    (synopsis "Parse and produce literals from strict or lazy bytestrings")
-    (description
-     "This package provides tools to parse and produce literals efficiently
-from strict or lazy bytestrings.")
-    (license license:bsd-2)))
-
-(define-public ghc-configurator
-  (package
-    (name "ghc-configurator")
-    (version "0.3.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/"
-                           "configurator/configurator-"
-                           version ".tar.gz"))
-       (sha256
-        (base32
-         "1d1iq1knwiq6ia5g64rw5hqm6dakz912qj13r89737rfcxmrkfbf"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-attoparsec" ,ghc-attoparsec)
-       ("ghc-hashable" ,ghc-hashable)
-       ("ghc-unix-compat" ,ghc-unix-compat)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
-    (home-page "http://github.com/bos/configurator")
-    (synopsis "Configuration management")
-    (description
-     "This package provides a configuration management library for programs
-and daemons.  The features include:
-
-@enumerate
-@item Automatic, dynamic reloading in response to modifications to
-  configuration files.
-@item A simple, but flexible, configuration language, supporting several of
-  the most commonly needed types of data, along with interpolation of strings
-  from the configuration or the system environment (e.g. @code{$(HOME)}).
-@item Subscription-based notification of changes to configuration properties.
-@item An @code{import} directive allows the configuration of a complex
-  application to be split across several smaller files, or common configuration
-  data to be shared across several applications.
-@end enumerate\n")
-    (license license:bsd-3)))
-
-(define-public ghc-file-embed
-  (package
-    (name "ghc-file-embed")
-    (version "0.0.10.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/file-embed/"
-                           "file-embed-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0lj164cnzqyd487mli91nnr7137a4h4qsasfwsnsh77sx12fpk9k"))))
-    (build-system haskell-build-system)
-    (home-page "https://github.com/snoyberg/file-embed")
-    (synopsis "Use Template Haskell to embed file contents directly")
-    (description
-     "This package allows you to use Template Haskell to read a file or all
-the files in a directory, and turn them into @code{(path, bytestring)} pairs
-embedded in your Haskell code.")
-    (license license:bsd-3)))
-
-(define-public ghc-safeio
-  (package
-    (name "ghc-safeio")
-    (version "0.0.5.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append "https://hackage.haskell.org/package/safeio/"
-                           "safeio-" version ".tar.gz"))
-       (sha256
-        (base32
-         "04g3070cbjdqj0h9l9ii6470xcbn40xfv4fr89a8yvnkdim9nyfm"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-conduit" ,ghc-conduit)
-       ("ghc-conduit-combinators" ,ghc-conduit-combinators)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-resourcet" ,ghc-resourcet)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-test-framework-th" ,ghc-test-framework-th)))
-    (home-page "https://github.com/luispedro/safeio")
-    (synopsis "Write output to disk atomically")
-    (description
-     "This package implements utilities to perform atomic output so as to
-avoid the problem of partial intermediate files.")
-    (license license:expat)))
-
-(define-public ghc-tldr
-  (package
-    (name "ghc-tldr")
-    (version "0.4.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/tldr/tldr-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0nc581y9jjzwd8l88g48c72mla7k6q1w102akl7gl5jsk9ljamd3"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-cmark" ,ghc-cmark)
-       ("ghc-optparse-applicative" ,ghc-optparse-applicative)
-       ("ghc-typed-process" ,ghc-typed-process)
-       ("ghc-semigroups" ,ghc-semigroups)))
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-golden" ,ghc-tasty-golden)))
-    (home-page "https://github.com/psibi/tldr-hs#readme")
-    (synopsis "Haskell tldr client")
-    (description "This package provides the @command{tldr} command and a
-Haskell client library allowing users to update and view @code{tldr} pages
-from a shell.  The @code{tldr} pages are a community effort to simplify the
-man pages with practical examples.")
-    (license license:bsd-3)))
-
-(define-public ghc-c2hs
-  (package
-    (name "ghc-c2hs")
-    (version "0.28.6")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/c2hs/c2hs-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1nplgxfin139x12sb656f5870rpdclrhzi8mq8pry035qld15pci"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-language-c" ,ghc-language-c)
-       ("ghc-dlist" ,ghc-dlist)))
-    (native-inputs
-     `(("ghc-test-framework" ,ghc-test-framework)
-       ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)
-       ("ghc-hunit" ,ghc-hunit)
-       ("ghc-shelly" ,ghc-shelly)
-       ("gcc" ,gcc)))
-    (arguments
-     `(;; XXX: Test failures are induced by a parse error in <bits/floatn.h>
-       ;; of glibc 2.28.
-       #:tests? #f
-
-       #:phases
-       (modify-phases %standard-phases
-         (add-before 'check 'set-cc
-           ;; add a cc executable in the path, needed for some tests to pass
-           (lambda* (#:key inputs #:allow-other-keys)
-             (let ((gcc (assoc-ref inputs "gcc"))
-                   (tmpbin (tmpnam))
-                   (curpath (getenv "PATH")))
-               (mkdir-p tmpbin)
-               (symlink (which "gcc") (string-append tmpbin "/cc"))
-               (setenv "PATH" (string-append tmpbin ":" curpath)))
-             #t))
-         (add-after 'check 'remove-cc
-           ;; clean the tmp dir made in 'set-cc
-           (lambda _
-             (let* ((cc-path (which "cc"))
-                    (cc-dir (dirname cc-path)))
-               (delete-file-recursively cc-dir)
-               #t))))))
-    (home-page "https://github.com/haskell/c2hs")
-    (synopsis "Create Haskell bindings to C libraries")
-    (description "C->Haskell assists in the development of Haskell bindings to
-C libraries.  It extracts interface information from C header files and
-generates Haskell code with foreign imports and marshaling.  Unlike writing
-foreign imports by hand (or using hsc2hs), this ensures that C functions are
-imported with the correct Haskell types.")
-    (license license:gpl2)))
-
-(define-public ghc-libmpd
-  (package
-    (name "ghc-libmpd")
-    (version "0.9.0.9")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "mirror://hackage/package/libmpd/libmpd-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1931m23iqb4wddpdidm4ph746zpaw41kkjzmb074j7yyfpk7x1jv"))))
-    (build-system haskell-build-system)
-    ;; Tests fail on i686.
-    ;; See https://github.com/vimus/libmpd-haskell/issues/112
-    (arguments `(#:tests? #f))
-    (inputs
-     `(("ghc-attoparsec" ,ghc-attoparsec)
-       ("ghc-old-locale" ,ghc-old-locale)
-       ("ghc-data-default-class" ,ghc-data-default-class)
-       ("ghc-network" ,ghc-network)
-       ("ghc-utf8-string" ,ghc-utf8-string)))
-    (native-inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)))
-    (home-page "https://github.com/vimus/libmpd-haskell")
-    (synopsis "Haskell client library for the Music Player Daemon")
-    (description "This package provides a pure Haskell client library for the
-Music Player Daemon.")
-    (license license:expat)))
-
-(define-public ghc-alsa-core
-  (package
-    (name "ghc-alsa-core")
-    (version "0.5.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "mirror://hackage/package/alsa-core/alsa-core-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1avh4a419h9d2zsslg6j8hm87ppgsgqafz8ll037rk2yy1g4jl7b"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-extensible-exceptions" ,ghc-extensible-exceptions)
-       ("alsa-lib" ,alsa-lib)))
-    (native-inputs
-     `(("pkg-config" ,pkg-config)))
-    (home-page "http://www.haskell.org/haskellwiki/ALSA")
-    (synopsis "Binding to the ALSA Library API (Exceptions)")
-    (description "This package provides access to ALSA infrastructure, that is
-needed by both alsa-seq and alsa-pcm.")
-    (license license:bsd-3)))
-
-(define-public ghc-base-unicode-symbols
-  (package
-    (name "ghc-base-unicode-symbols")
-    (version "0.2.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "mirror://hackage/package/base-unicode-symbols/base-unicode-symbols-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1ia6li7qjg1zkak4gf6mnbshw45mq9bfjr0jch58ds0lscmvwyzf"))))
-    (build-system haskell-build-system)
-    (home-page "http://www.haskell.org/haskellwiki/Unicode-symbols")
-    (synopsis "Unicode alternatives for common functions and operators")
-    (description "This package defines new symbols for a number of functions,
-operators and types in the base package.  All symbols are documented with
-their actual definition and information regarding their Unicode code point.
-They should be completely interchangeable with their definitions.  For
-further Unicode goodness you can enable the @code{UnicodeSyntax}
-@url{https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/glasgow_exs.html#unicode-syntax,
-language extension}.  This extension enables Unicode characters to be used to
-stand for certain ASCII character sequences, i.e. → instead of @code{->},
-∀ instead of @code{forall} and many others.")
-    (license license:bsd-3)))
-
-(define-public ghc-genvalidity
-  (package
-    (name "ghc-genvalidity")
-    (version "0.5.1.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/genvalidity/genvalidity-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "17ykq38j9a2lzir6dqz5jgy6ndaafrpkhqhcg96c5ppg7wcxaaj0"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-validity" ,ghc-validity)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)
-       ("ghc-hspec-core" ,ghc-hspec-core)))
-    (home-page
-     "https://github.com/NorfairKing/validity")
-    (synopsis
-     "Testing utilities for the @code{validity} library")
-    (description
-     "This package provides testing utilities that are useful in conjunction
-with the @code{Validity} typeclass.")
-    (license license:expat)))
-
-(define-public ghc-genvalidity-property
-  (package
-    (name "ghc-genvalidity-property")
-    (version "0.2.1.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/"
-             "genvalidity-property/genvalidity-property-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0cjw5i2pydidda9bnp6x37ylhxdk9g874x5sadr6sscg5kq85a1b"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-genvalidity" ,ghc-genvalidity)
-       ("ghc-hspec" ,ghc-hspec)
-       ("hspec-discover" ,hspec-discover)
-       ("ghc-validity" ,ghc-validity)))
-    (native-inputs `(("ghc-doctest" ,ghc-doctest)))
-    (home-page
-     "https://github.com/NorfairKing/validity")
-    (synopsis
-     "Standard properties for functions on @code{Validity} types")
-    (description
-     "This package supplements the @code{Validity} typeclass with standard
-properties for functions operating on them.")
-    (license license:expat)))
-
-(define-public ghc-validity
-  (package
-    (name "ghc-validity")
-    (version "0.7.0.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/validity/validity-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0xribw98amafihw87ddajk6vlirp7w9b26lrnjgq7jfm4710j95f"))))
-    (build-system haskell-build-system)
-    (native-inputs `(("ghc-hspec" ,ghc-hspec)
-                     ("hspec-discover" ,hspec-discover)))
-    (home-page
-     "https://github.com/NorfairKing/validity")
-    (synopsis "Validity typeclass")
-    (description
-     "Values of custom types usually have invariants imposed upon them.  This
-package provides the @code{Validity} type class, which makes these invariants
-explicit by providing a function to check whether the invariants hold.")
-    (license license:expat)))
-
-(define-public ghc-path
-  (package
-    (name "ghc-path")
-    (version "0.6.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/path/path-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0nayla4k1gb821k8y5b9miflv1bi8f0czf9rqr044nrr2dddi2sb"))))
-    (build-system haskell-build-system)
-    (arguments
-     ;; TODO: There are some Windows-related tests and modules that need to be
-     ;; danced around.
-     `(#:tests? #f
-       #:cabal-revision
-       ("1" "05b1zwx2a893h4h5wvgpc5g5pyx71hfmx409rqisd8s1bq1hn463")))
-    (inputs
-     `(("ghc-aeson" ,ghc-aeson)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-hashable" ,ghc-hashable)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("ghc-quickcheck" ,ghc-quickcheck)
-       ("ghc-genvalidity" ,ghc-genvalidity)
-       ("ghc-genvalidity-property" ,ghc-genvalidity-property)
-       ("ghc-hspec" ,ghc-hspec)
-       ("ghc-validity" ,ghc-validity)))
-    (home-page
-     "http://hackage.haskell.org/package/path")
-    (synopsis "Support for well-typed paths")
-    (description "This package introduces a type for paths upholding useful
-invariants.")
-    (license license:bsd-3)))
-
-(define-public ghc-path-io
-  (package
-    (name "ghc-path-io")
-    (version "1.3.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/path-io/path-io-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1g9m3qliqjk1img894wsb89diym5zrq51qkkrwhz4sbm9a8hbv1a"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-dlist" ,ghc-dlist)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-path" ,ghc-path)
-       ("ghc-transformers-base" ,ghc-transformers-base)
-       ("ghc-unix-compat" ,ghc-unix-compat)
-       ("ghc-temporary" ,ghc-temporary)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)))
-    (arguments
-    `(#:cabal-revision
-      ("3" "1h9hsibbflkxpjl2fqamqiv3x3gasf51apnmklrs9l9x8r32hzcc")))
-    (home-page
-     "https://github.com/mrkkrp/path-io")
-    (synopsis "Functions for manipulating well-typed paths")
-    (description "This package provides an interface to the @code{directory}
-package for users of @code{path}.  It also implements some missing stuff like
-recursive scanning and copying of directories, working with temporary
-files/directories, and more.")
-    (license license:bsd-3)))
-
-(define-public ghc-hindent
-  (package
-    (name "ghc-hindent")
-    (version "5.3.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/hindent/hindent-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0wkfik7mvqskk23kyh7ybgnlh3j9j1ym7d3ncahsbli9w654b7xg"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:modules ((guix build haskell-build-system)
-                  (guix build utils)
-                  (guix build emacs-utils))
-       #:imported-modules (,@%haskell-build-system-modules
-                           (guix build emacs-utils))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'install 'emacs-install
-           (lambda* (#:key inputs outputs #:allow-other-keys)
-             (let* ((out   (assoc-ref outputs "out"))
-                    (elisp-file "elisp/hindent.el")
-                    (dest  (string-append out "/share/emacs/site-lisp"
-                                          "/guix.d/hindent-" ,version))
-                    (emacs (string-append (assoc-ref inputs "emacs")
-                                          "/bin/emacs")))
-               (make-file-writable elisp-file)
-               (emacs-substitute-variables elisp-file
-                 ("hindent-process-path"
-                  (string-append out "/bin/hindent")))
-               (install-file elisp-file dest)
-               (emacs-generate-autoloads "hindent" dest)))))))
-    (inputs
-     `(("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
-       ("ghc-monad-loops" ,ghc-monad-loops)
-       ("ghc-utf8-string" ,ghc-utf8-string)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-yaml" ,ghc-yaml)
-       ("ghc-unix-compat" ,ghc-unix-compat)
-       ("ghc-path" ,ghc-path)
-       ("ghc-path-io" ,ghc-path-io)
-       ("ghc-optparse-applicative" ,ghc-optparse-applicative)))
-    (native-inputs
-     `(("ghc-hspec" ,ghc-hspec)
-       ("ghc-diff" ,ghc-diff)
-       ("emacs" ,emacs-minimal)))
-    (home-page
-     "https://github.com/commercialhaskell/hindent")
-    (synopsis "Extensible Haskell pretty printer")
-    (description
-     "This package provides automatic formatting for Haskell files.  Both a
-library and an executable.")
-    (license license:bsd-3)))
-
-(define-public ghc-descriptive
-  (package
-    (name "ghc-descriptive")
-    (version "0.9.5")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/descriptive/descriptive-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0y5693zm2kvqjilybbmrcv1g6n6x2p6zjgi0k0axjw1sdhh1g237"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-aeson" ,ghc-aeson)
-       ("ghc-bifunctors" ,ghc-bifunctors)
-       ("ghc-scientific" ,ghc-scientific)
-       ("ghc-vector" ,ghc-vector)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-hspec" ,ghc-hspec)))
-    (home-page
-     "https://github.com/chrisdone/descriptive")
-    (synopsis
-     "Self-describing consumers/parsers: forms, cmd-line args, JSON, etc.")
-    (description
-     "This package provides datatypes and functions for creating consumers
-and parsers with useful semantics.")
-    (license license:bsd-3)))
-
-(define-public ghc-exactprint
-  (package
-    (name "ghc-exactprint")
-    (version "0.5.6.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/"
-             "ghc-exactprint/ghc-exactprint-" version ".tar.gz"))
-       (sha256
-        (base32
-         "141k6qiys0m0r4br7ikp4i546vs3xcil9cwglzcdfcbnb5nj1z87"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-paths" ,ghc-paths)
-       ("ghc-syb" ,ghc-syb)
-       ("ghc-free" ,ghc-free)))
-    (native-inputs
-     `(("ghc-hunit" ,ghc-hunit)
-       ("ghc-diff" ,ghc-diff)
-       ("ghc-silently" ,ghc-silently)
-       ("ghc-filemanip" ,ghc-filemanip)))
-    (home-page
-     "http://hackage.haskell.org/package/ghc-exactprint")
-    (synopsis "ExactPrint for GHC")
-    (description
-     "Using the API Annotations available from GHC 7.10.2, this library
-provides a means to round-trip any code that can be compiled by GHC, currently
-excluding @file{.lhs} files.")
-    (license license:bsd-3)))
-
-(define-public ghc-microlens-mtl
-  (package
-    (name "ghc-microlens-mtl")
-    (version "0.1.11.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/microlens-mtl/microlens-mtl-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0l6z1gkzwcpv89bxf5vgfrjb6gq2pj7sjjc53nvi5b9alx34zryk"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-microlens" ,ghc-microlens)
-       ("ghc-transformers-compat" ,ghc-transformers-compat)))
-    (home-page "https://github.com/monadfix/microlens")
-    (synopsis
-     "@code{microlens} support for Reader/Writer/State from mtl")
-    (description
-     "This package contains functions (like @code{view} or @code{+=}) which
-work on @code{MonadReader}, @code{MonadWriter}, and @code{MonadState} from the
-mtl package.  This package is a part of the
-@uref{http://hackage.haskell.org/package/microlens, microlens} family; see the
-readme @uref{https://github.com/aelve/microlens#readme, on Github}.")
-    (license license:bsd-3)))
-
-(define-public ghc-microlens-ghc
-  (package
-    (name "ghc-microlens-ghc")
-    (version "0.4.9.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/microlens-ghc/microlens-ghc-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "03iwgg8zww9irv59l70c8yy7vzxir1zf66y12210xk91k5hq6jrj"))))
-    (build-system haskell-build-system)
-    (inputs `(("ghc-microlens" ,ghc-microlens)))
-    (home-page "https://github.com/monadfix/microlens")
-    (synopsis "Use @code{microlens} with GHC libraries like @code{array}")
-    (description "This library provides everything that @code{microlens}
-provides plus instances to make @code{each}, @code{at}, and @code{ix}
-usable with arrays, @code{ByteString}, and containers.  This package is
-a part of the @uref{http://hackage.haskell.org/package/microlens,
-microlens} family; see the readme
-@uref{https://github.com/aelve/microlens#readme, on Github}.")
-    (license license:bsd-3)))
-
-(define-public ghc-microlens-platform
-  (package
-    (name "ghc-microlens-platform")
-    (version "0.3.10")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/"
-             "microlens-platform/microlens-platform-" version ".tar.gz"))
-       (sha256
-        (base32
-         "1d4nhmgf9jq0ixc7qhwm7aaw3xdr0nalw58d0ydsydgf02cyazwv"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-hashable" ,ghc-hashable)
-       ("ghc-microlens" ,ghc-microlens)
-       ("ghc-microlens-ghc" ,ghc-microlens-ghc)
-       ("ghc-microlens-mtl" ,ghc-microlens-mtl)
-       ("ghc-microlens-th" ,ghc-microlens-th)
-       ("ghc-unordered-containers" ,ghc-unordered-containers)
-       ("ghc-vector" ,ghc-vector)))
-    (home-page "https://github.com/monadfix/microlens")
-    (synopsis "Feature-complete microlens")
-    (description
-     "This package exports a module which is the recommended starting point
-for using @uref{http://hackage.haskell.org/package/microlens, microlens} if
-you aren't trying to keep your dependencies minimal.  By importing
-@code{Lens.Micro.Platform} you get all functions and instances from
-@uref{http://hackage.haskell.org/package/microlens, microlens},
-@uref{http://hackage.haskell.org/package/microlens-th, microlens-th},
-@uref{http://hackage.haskell.org/package/microlens-mtl, microlens-mtl},
-@uref{http://hackage.haskell.org/package/microlens-ghc, microlens-ghc}, as
-well as instances for @code{Vector}, @code{Text}, and @code{HashMap}.  The
-minor and major versions of @code{microlens-platform} are incremented whenever
-the minor and major versions of any other @code{microlens} package are
-incremented, so you can depend on the exact version of
-@code{microlens-platform} without specifying the version of @code{microlens}
-you need.  This package is a part of the
-@uref{http://hackage.haskell.org/package/microlens, microlens} family; see the
-readme @uref{https://github.com/aelve/microlens#readme, on Github}.")
-    (license license:bsd-3)))
-
-(define-public ghc-hasktags
-  (package
-    (name "ghc-hasktags")
-    (version "0.71.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "https://hackage.haskell.org/package/hasktags/hasktags-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1s2k9qrgy1jily96img2pmn7g35mwnnfiw6si3aw32jfhg5zsh1c"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-system-filepath" ,ghc-system-filepath)
-       ("ghc-optparse-applicative" ,ghc-optparse-applicative)))
-    (native-inputs
-     `(("ghc-json" ,ghc-json)
-       ("ghc-utf8-string" ,ghc-utf8-string)
-       ("ghc-microlens-platform" ,ghc-microlens-platform)
-       ("ghc-hunit" ,ghc-hunit)))
-    (home-page "http://github.com/MarcWeber/hasktags")
-    (synopsis "Make @code{Ctags} and @code{Etags} files for Haskell programs")
-    (description
-     "This package provides a means of generating tag files for Emacs and
-Vim.")
-    (license license:bsd-3)))
-
-(define-public ghc-stylish-haskell
-  (package
-    (name "ghc-stylish-haskell")
-    (version "0.9.2.1")
-    (source
-      (origin
-        (method url-fetch)
-        (uri (string-append
-               "mirror://hackage/package/stylish-haskell/stylish-haskell-"
-               version
-               ".tar.gz"))
-        (sha256
-          (base32
-            "1ls11fdx6snvfx8yykpidz142zzxwi5bazl49hgfqlwx50rqcp7w"))))
-    (build-system haskell-build-system)
-    (inputs
-      `(("ghc-aeson" ,ghc-aeson)
-        ("ghc-file-embed" ,ghc-file-embed)
-        ("ghc-haskell-src-exts" ,ghc-haskell-src-exts)
-        ("ghc-semigroups" ,ghc-semigroups)
-        ("ghc-syb" ,ghc-syb)
-        ("ghc-yaml" ,ghc-yaml)
-        ("ghc-strict" ,ghc-strict)
-        ("ghc-optparse-applicative"
-         ,ghc-optparse-applicative)))
-    (native-inputs
-      `(("ghc-hunit" ,ghc-hunit)
-        ("ghc-test-framework" ,ghc-test-framework)
-        ("ghc-test-framework-hunit" ,ghc-test-framework-hunit)))
-    (home-page "https://github.com/jaspervdj/stylish-haskell")
-    (synopsis "Haskell code prettifier")
-    (description "Stylish-haskell is a Haskell code prettifier.  The goal is
-not to format all of the code in a file, to avoid \"getting in the way\".
-However, this tool can e.g. clean up import statements and help doing various
-tasks that get tedious very quickly.  It can
-@itemize
-@item
-Align and sort @code{import} statements
-@item
-Group and wrap @code{{-# LANGUAGE #-}} pragmas, remove (some) redundant
-pragmas
-@item
-Remove trailing whitespaces
-@item
-Align branches in @code{case} and fields in records
-@item
-Convert line endings (customisable)
-@item
-Replace tabs by four spaces (turned off by default)
-@item
-Replace some ASCII sequences by their Unicode equivalent (turned off by
-default)
-@end itemize")
-    (license license:bsd-3)))
-
-(define-public ghc-validation
-  (package
-    (name "ghc-validation")
-    (version "1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "mirror://hackage/package/validation/validation-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "08drmdvyzg2frbb26icy1mlz52xv0l6gi3v8gb7xp0vrcci5libh"))))
-    (build-system haskell-build-system)
-    (arguments
-     `(#:cabal-revision
-       ("1" "1x1g4nannz81j1h64l1m3ancc96zc57d1bjhj1wk7bwn1xxbi5h3")))
-    (inputs
-     `(("ghc-semigroups" ,ghc-semigroups)
-       ("ghc-semigroupoids" ,ghc-semigroupoids)
-       ("ghc-bifunctors" ,ghc-bifunctors)
-       ("ghc-lens" ,ghc-lens)))
-    (native-inputs
-     `(("ghc-hedgehog" ,ghc-hedgehog)
-       ("ghc-hunit" ,ghc-hunit)))
-    (home-page "https://github.com/qfpl/validation")
-    (synopsis
-     "Data-type like Either but with an accumulating Applicative")
-    (description
-     "A data-type like Either but with differing properties and type-class
-instances.
-
-Library support is provided for this different representation, including
-@code{lens}-related functions for converting between each and abstracting over
-their similarities.
-
-The @code{Validation} data type is isomorphic to @code{Either}, but has an
-instance of @code{Applicative} that accumulates on the error side.  That is to
-say, if two (or more) errors are encountered, they are appended using a
-@{Semigroup} operation.
-
-As a consequence of this @code{Applicative} instance, there is no
-corresponding @code{Bind} or @code{Monad} instance.  @code{Validation} is an
-example of, \"An applicative functor that is not a monad.\"")
-    (license license:bsd-3)))
-
-(define-public ghc-concurrent-output
-  (package
-    (name "ghc-concurrent-output")
-    (version "1.10.9")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "mirror://hackage/package/concurrent-output/concurrent-output-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "0mwf155w89nbbkjln7hhbn8k3f8p0ylcvgrg31cm7ijpx4499i4c"))))
-    (build-system haskell-build-system)
-    (inputs
-     `(("ghc-async" ,ghc-async)
-       ("ghc-exceptions" ,ghc-exceptions)
-       ("ghc-ansi-terminal" ,ghc-ansi-terminal)
-       ("ghc-terminal-size" ,ghc-terminal-size)))
-    (home-page
-     "https://hackage.haskell.org/package/concurrent-output")
-    (synopsis
-     "Ungarble output from several threads or commands")
-    (description
-     "Lets multiple threads and external processes concurrently output to the
-console, without it getting all garbled up.
-
-Built on top of that is a way of defining multiple output regions, which are
-automatically laid out on the screen and can be individually updated by
-concurrent threads.  Can be used for progress displays etc.")
-    (license license:bsd-2)))
-
-(define-public ghc-wl-pprint-annotated
-  (package
-    (name "ghc-wl-pprint-annotated")
-    (version "0.1.0.1")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (string-append
-             "mirror://hackage/package/wl-pprint-annotated/wl-pprint-annotated-"
-             version
-             ".tar.gz"))
-       (sha256
-        (base32
-         "1br7qyf27iza213inwhf9bm2k6in0zbmfw6w4clqlc9f9cj2nrkb"))))
-    (build-system haskell-build-system)
-    (native-inputs
-     `(("ghc-tasty" ,ghc-tasty)
-       ("ghc-tasty-hunit" ,ghc-tasty-hunit)))
-    (home-page
-     "https://github.com/minad/wl-pprint-annotated#readme")
-    (synopsis
-     "Wadler/Leijen pretty printer with annotation support")
-    (description
-     "Annotations are useful for coloring.  This is a limited version of
-@code{wl-pprint-extras} without support for point effects and without the free
-monad.  Like in @code{annotated-wl-pprint}, only annotations are supported.
-Compared to @code{annotated-wl-pprint} this library provides a slightly
-modernized interface.")
-    (license license:bsd-3)))
 ;;; haskell.scm ends here
diff --git a/gnu/packages/idris.scm b/gnu/packages/idris.scm
index 4290d8c21f..894a19f0aa 100644
--- a/gnu/packages/idris.scm
+++ b/gnu/packages/idris.scm
@@ -21,9 +21,9 @@
 
 (define-module (gnu packages idris)
   #:use-module (gnu packages)
-  #:use-module (gnu packages haskell)
   #:use-module (gnu packages haskell-check)
   #:use-module (gnu packages haskell-web)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages libffi)
   #:use-module (gnu packages multiprecision)
   #:use-module (gnu packages ncurses)
diff --git a/gnu/packages/image.scm b/gnu/packages/image.scm
index 93eccf842d..4463007c74 100644
--- a/gnu/packages/image.scm
+++ b/gnu/packages/image.scm
@@ -625,6 +625,81 @@ work.")
     (home-page "https://jbig2dec.com")
     (license license:gpl2+)))
 
+(define-public jbigkit
+  (package
+    (name "jbigkit")
+    (version "2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://www.cl.cam.ac.uk/~mgk25/jbigkit/"
+                           "download/jbigkit-" version ".tar.gz"))
+       (sha256
+        (base32 "0cnrcdr1dwp7h7m0a56qw09bv08krb37mpf7cml5sjdgpyv0cwfy"))
+       (modules '((guix build utils)))
+       (snippet
+        '(begin
+           ;; Remove files without clear licence information.
+           (for-each delete-file-recursively
+                     (list "contrib" "examples"))
+           #t))))
+    (build-system gnu-build-system)
+    (outputs (list "out" "pbmtools"))
+    (arguments
+     `(#:modules ((srfi srfi-26)
+                  ,@%gnu-build-system-modules)
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure)            ; no configure script
+         (replace 'install              ; no ‘make install’ target
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (lib (string-append out "/lib"))
+                    (include (string-append out "/include")))
+               (with-directory-excursion "libjbig"
+                 (for-each (cut install-file <> include)
+                           (find-files "." "\\.h$"))
+                 (for-each (cut install-file <> lib)
+                           (find-files "." "\\.a$")))
+               #t)))
+         (add-after 'install 'install-pbmtools
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "pbmtools"))
+                    (bin (string-append out "/bin"))
+                    (man1 (string-append out "/share/man/man1"))
+                    (man5 (string-append out "/share/man/man5")))
+               (with-directory-excursion "pbmtools"
+                 (for-each (cut install-file <> bin)
+                           (list "jbgtopbm" "jbgtopbm85"
+                                 "pbmtojbg" "pbmtojbg85"))
+
+                 (for-each (cut install-file <> man1)
+                           (find-files "." "\\.1$"))
+                 (for-each (cut install-file <> man5)
+                           (find-files "." "\\.5$"))
+                 #t)))))
+       #:test-target "test"
+       #:tests? #f))                    ; tests depend on examples/
+    (home-page "https://www.cl.cam.ac.uk/~mgk25/jbigkit/")
+    (synopsis "Lossless compression for bi-level high-resolution images")
+    (description
+     "JBIG-KIT implements the JBIG1 data compression standard (ITU-T T.82 and
+ISO/IEC 11544:1993), designed for bi-level (one bit per pixel) images such as
+black-and-white scanned documents.  It is widely used in fax products, printer
+firmware and drivers, document management systems, and imaging software.
+
+This package provides a static C library of (de)compression functions and some
+simple command-line converters similar to those provided by netpbm.
+
+Two JBIG1 variants are available.  One (@file{jbig.c}) implements nearly all
+options of the standard but has to keep the full uncompressed image in memory.
+The other (@file{jbig85.c}) implements just the ITU-T T.85 profile, with
+memory management optimized for embedded and fax applications.  It buffers
+only a few lines of the uncompressed image in memory and is able to stream
+images of initially unknown height.")
+    (license (list license:isc          ; pbmtools/p?m.5
+                   license:gpl2+))))    ; the rest
+
 (define-public openjpeg
   (package
     (name "openjpeg")
@@ -966,12 +1041,11 @@ multi-dimensional image processing.")
    (home-page "https://ukoethe.github.io/vigra/")))
 
 (define-public vigra-c
-  (let* ((commit "a2ff675f42079e2623318d8ff8b4288dbe7a7f06")
-         (revision "0")
-         (version (git-version "0.0.0" revision commit)))
+  (let* ((commit "66ff4fa5a7d4a77415caa676a45c2c6ea16562e7")
+         (revision "1"))
     (package
       (name "vigra-c")
-      (version version)
+      (version (git-version "0.0.0" revision commit))
       (home-page "https://github.com/BSeppke/vigra_c")
       (source (origin
                 (method git-fetch)
@@ -980,7 +1054,7 @@ multi-dimensional image processing.")
                       (commit commit)))
                 (sha256
                  (base32
-                  "1f1phmfbbz3dsq9330rd6bjmdg29hxskxi9l17cyx1f4mdqpgdgl"))
+                  "1pnd92s284dvsg8zp6md7p8ck55bmcsryz58gzic7jh6m72hg689"))
                 (file-name (git-file-name name version))))
       (build-system cmake-build-system)
       (arguments
@@ -990,6 +1064,7 @@ multi-dimensional image processing.")
       (inputs
        `(("fftw" ,fftw)
          ("fftwf" ,fftwf)
+         ("hdf5" ,hdf5)
          ("vigra" ,vigra)))
       (synopsis "C interface to the VIGRA computer vision library")
       (description
diff --git a/gnu/packages/julia.scm b/gnu/packages/julia.scm
index 43254f25fd..65a5e42beb 100644
--- a/gnu/packages/julia.scm
+++ b/gnu/packages/julia.scm
@@ -482,6 +482,10 @@
        ("patchelf" ,patchelf)
        ("pkg-config" ,pkg-config)
        ("python" ,python-2)))
+    (native-search-paths
+     (list (search-path-specification
+            (variable "JULIA_LOAD_PATH")
+            (files (list "share/julia/packages/")))))
     ;; Julia is not officially released for ARM and MIPS.
     ;; See https://github.com/JuliaLang/julia/issues/10639
     (supported-systems '("i686-linux" "x86_64-linux" "aarch64-linux"))
diff --git a/gnu/packages/libreoffice.scm b/gnu/packages/libreoffice.scm
index 48dcaaa76e..f8b1433aa3 100644
--- a/gnu/packages/libreoffice.scm
+++ b/gnu/packages/libreoffice.scm
@@ -335,14 +335,14 @@ as Alfresco or Nuxeo.")
 (define-public libabw
   (package
     (name "libabw")
-    (version "0.1.2")
+    (version "0.1.3")
     (source
      (origin
       (method url-fetch)
       (uri (string-append "https://dev-www.libreoffice.org/src/libabw/"
                           "libabw-" version ".tar.xz"))
       (sha256 (base32
-               "11949iscdb99f2jplxjd39282jxcrf2fw0sqbh5dl7gqb96r8whb"))))
+               "1vbfrmnvib3cym0yyyabnd8xpx4f7wp20vnn09s6dln347fajqz7"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("doxygen" ,doxygen)
@@ -354,9 +354,6 @@ as Alfresco or Nuxeo.")
        ("libxml2" ,libxml2)))
     (inputs
      `(("boost" ,boost)))
-    (arguments
-     ;; avoid triggering configure errors by simple inclusion of boost headers
-     `(#:configure-flags '("--disable-werror")))
     (home-page "https://wiki.documentfoundation.org/DLP/Libraries/libabw")
     (synopsis "Library for parsing the AbiWord format")
     (description "Libabw is a library that parses the file format of
@@ -585,14 +582,14 @@ created by PageMaker version 6.x and 7.")
 (define-public libvisio
   (package
     (name "libvisio")
-    (version "0.1.6")
+    (version "0.1.7")
     (source
      (origin
       (method url-fetch)
       (uri (string-append "http://dev-www.libreoffice.org/src/libvisio/"
                           "libvisio-" version ".tar.xz"))
       (sha256 (base32
-               "1yahpfl13qk6178irv8jn5ppxdn7isafqisyqsdw0lqxcz9h447y"))))
+               "0k7adcbbf27l7n453cca1m6s9yj6qvb5j6bsg2db09ybf3w8vbwg"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("cppunit" ,cppunit)
diff --git a/gnu/packages/libusb.scm b/gnu/packages/libusb.scm
index 299fbf2238..e6016d1049 100644
--- a/gnu/packages/libusb.scm
+++ b/gnu/packages/libusb.scm
@@ -51,15 +51,15 @@
 (define-public libusb
   (package
     (name "libusb")
-    (version "1.0.22")
+    (version "1.0.23")
     (source
      (origin
       (method url-fetch)
-      (uri (string-append "mirror://sourceforge/libusb/libusb-1.0/"
-                          "libusb-" version "/libusb-" version ".tar.bz2"))
+      (uri (string-append "https://github.com/libusb/libusb/"
+                          "releases/download/v" version
+                          "/libusb-" version ".tar.bz2"))
       (sha256
-       (base32
-        "0mw1a5ss4alg37m6bd4k44v35xwrcwp5qm4s686q1nsgkbavkbkm"))))
+       (base32 "13dd2a9x290d1q8nb1lqiaf36grcvns5ripk5k2xm0lajmpc04fv"))))
     (build-system gnu-build-system)
 
     ;; XXX: Enabling udev is now recommended, but eudev indirectly depends on
@@ -82,9 +82,9 @@ devices on various operating systems.")
      (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/libusb/"
-                          name "-" (version-major+minor version) "/"
-                          name "-" version "/"
-                          name "-" version ".tar.bz2"))
+                          "libusb-compat-" (version-major+minor version) "/"
+                          "libusb-compat-" version "/"
+                          "libusb-compat-" version ".tar.bz2"))
       (sha256
        (base32
         "0nn5icrfm9lkhzw1xjvaks9bq3w6mjg86ggv3fn7kgi4nfvg8kj0"))))
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index e03d30cb03..a543df3fe8 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -349,42 +349,42 @@ corresponding UPSTREAM-SOURCE (an origin), using the given DEBLOB-SCRIPTS."
                         "linux-" version ".tar.xz"))
     (sha256 hash)))
 
-(define-public linux-libre-5.2-version "5.2.11")
+(define-public linux-libre-5.2-version "5.2.13")
 (define-public linux-libre-5.2-pristine-source
   (let ((version linux-libre-5.2-version)
-        (hash (base32 "1y9kn1zny3xpmbi5an3g7hbzywnycys8chfaw6laij1xk4gq6ahc")))
+        (hash (base32 "12hpph3iynr22mfwz7745lp01waf2kg579hr56d4pvhx4iahzdhp")))
    (make-linux-libre-source version
                             (%upstream-linux-source version hash)
                             deblob-scripts-5.2)))
 
-(define-public linux-libre-4.19-version "4.19.69")
+(define-public linux-libre-4.19-version "4.19.71")
 (define-public linux-libre-4.19-pristine-source
   (let ((version linux-libre-4.19-version)
-        (hash (base32 "11yrw8ixd5ni9rlpndqsz2ihx6k8qaf35a1lf164lkhaa85pd4f0")))
+        (hash (base32 "1bjwkb7k82l646ryyy0jbwsnygm2qsxgcwli8bdrj844skzynlqz")))
     (make-linux-libre-source version
                              (%upstream-linux-source version hash)
                              deblob-scripts-4.19)))
 
-(define-public linux-libre-4.14-version "4.14.141")
+(define-public linux-libre-4.14-version "4.14.142")
 (define-public linux-libre-4.14-pristine-source
   (let ((version linux-libre-4.14-version)
-        (hash (base32 "05rs411rw10hhnfzvaxmcik3pq20i1i05shvvra4bv164f0z1f8b")))
+        (hash (base32 "1wwhnm1n1b6yzsd2zzzf9i3n4hlvgnph70p67cwahw0ik4ssayz6")))
     (make-linux-libre-source version
                              (%upstream-linux-source version hash)
                              deblob-scripts-4.14)))
 
-(define-public linux-libre-4.9-version "4.9.190")
+(define-public linux-libre-4.9-version "4.9.191")
 (define-public linux-libre-4.9-pristine-source
   (let ((version linux-libre-4.9-version)
-        (hash (base32 "05ha3snfk0vdqk9i27icwpq2if0h2jvshavn69ldwqm4h2h1r2py")))
+        (hash (base32 "1g5p736p8zx5rmxaj56yw93jp768npl868jsn8973dny0rsbim6y")))
     (make-linux-libre-source version
                              (%upstream-linux-source version hash)
                              deblob-scripts-4.9)))
 
-(define-public linux-libre-4.4-version "4.4.190")
+(define-public linux-libre-4.4-version "4.4.191")
 (define-public linux-libre-4.4-pristine-source
   (let ((version linux-libre-4.4-version)
-        (hash (base32 "1rf28cjrrmj7mm8xqlfld6k20ddk15j4mmyarqibjx9pk9acij7y")))
+        (hash (base32 "0x3lnq4xyj5v6r1cz4jizm4vdspws1nb806f5qczwi3yil5nm6bh")))
     (make-linux-libre-source version
                              (%upstream-linux-source version hash)
                              deblob-scripts-4.4)))
@@ -664,6 +664,12 @@ for ARCH and optionally VARIANT, or #f if there is no such configuration."
              #t))
          (replace 'configure
            (lambda* (#:key inputs native-inputs target #:allow-other-keys)
+             ;; Unset CROSS_CPATH to make sure that cross-libc is not
+             ;; found. Otherwise, some of its header would conflict with the
+             ;; one from linux (stdint.h and linux/types.h)
+             ,@(if (%current-target-system)
+                   '((unsetenv "CROSS_CPATH"))
+                   '())
              ;; Avoid introducing timestamps
              (setenv "KCONFIG_NOTIMESTAMP" "1")
              (setenv "KBUILD_BUILD_TIMESTAMP" (getenv "SOURCE_DATE_EPOCH"))
@@ -887,7 +893,7 @@ and should be used with caution, especially on untested models.")
 (define-public vhba-module
   (package
     (name "vhba-module")
-    (version "20190410")
+    (version "20190831")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -895,7 +901,7 @@ and should be used with caution, especially on untested models.")
                     version ".tar.bz2"))
               (sha256
                (base32
-                "1513hq130raxp9z5grj54cwfjfxj05apipxg425j0zicii59a60c"))))
+                "1ybbk6l06n0y11n5wnfmvdz0baizmq55l458ywimghdyz0n7g0ws"))))
     (build-system linux-module-build-system)
     (arguments
      ;; TODO: No tests?
@@ -1915,7 +1921,7 @@ transparently through a bridge.")
 (define-public libnl
   (package
     (name "libnl")
-    (version "3.4.0")
+    (version "3.5.0")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -1924,7 +1930,7 @@ transparently through a bridge.")
                     "/libnl-" version ".tar.gz"))
               (sha256
                (base32
-                "1gzm444rnsib64dddv0cwlpzy1q4bycjqhp1i5pxpikimqvpca5p"))))
+                "1yh5bqmkivd78x378x34gzb28lvykn6b9k3hgvvpdnj5jpn3689m"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("bison" ,bison)
@@ -1939,7 +1945,7 @@ transparently through a bridge.")
                  (string-join (string-split version #\.) "_")
                  "/libnl-doc-" version ".tar.gz"))
            (sha256
-            (base32 "1m5cnzviv31gjnz6fz5rgyl6ah4dbp2akm49j9973sgwl36gs8jx"))))))
+            (base32 "19p5y8q3cm5wqvamqc4s5syxnnkvzxy3gw8ivxk6fv9ybn8jm35h"))))))
     (inputs
      `(("python-2" ,python-2)
        ("python-3" ,python-3)))
@@ -2308,15 +2314,15 @@ compressed, transparent to other programs, without decompressing them.")
 (define-public numactl
   (package
     (name "numactl")
-    (version "2.0.12")
+    (version "2.0.13")
     (source (origin
               (method url-fetch)
               (uri (string-append
                     "https://github.com/numactl/numactl/releases/download/v"
-                    version "/" name "-" version ".tar.gz"))
+                    version "/numactl-" version ".tar.gz"))
               (sha256
                (base32
-                "0ad7mpi3vacbfnx3aqxnvgsj64yp3mav9yxnaz8ancjv7wvdmfsm"))))
+                "16lcypvcmx1ydkpi2s82kqhg13kak7qhpbnj8hd9bdbyhr5ja7lr"))))
     (build-system gnu-build-system)
     (arguments
      '(;; There's a 'test' target, but it requires NUMA support in the kernel
@@ -2330,14 +2336,14 @@ compressed, transparent to other programs, without decompressing them.")
     (synopsis "Tools for non-uniform memory access (NUMA) machines")
     (description
      "NUMA stands for Non-Uniform Memory Access, in other words a system whose
-memory is not all in one place.  The numactl program allows you to run your
-application program on specific CPU's and memory nodes.  It does this by
-supplying a NUMA memory policy to the operating system before running your
+memory is not all in one place.  The @command{numactl} program allows you to
+run your application program on specific CPUs and memory nodes.  It does this
+by supplying a NUMA memory policy to the operating system before running your
 program.
 
-The package contains other commands, such as numademo, numastat and memhog.
-The numademo command provides a quick overview of NUMA performance on your
-system.")
+The package contains other commands, such as @command{numastat},
+@command{memhog}, and @command{numademo} which provides a quick overview of
+NUMA performance on your system.")
     (license (list license:gpl2                   ;programs
                    license:lgpl2.1))))            ;library
 
diff --git a/gnu/packages/lisp.scm b/gnu/packages/lisp.scm
index 34edea41de..65fc1a58cd 100644
--- a/gnu/packages/lisp.scm
+++ b/gnu/packages/lisp.scm
@@ -113,7 +113,7 @@
       (build-system gnu-build-system)
       (arguments
        `(#:parallel-build? #f  ; The build system seems not to be thread safe.
-         #:tests? #f  ; There does not seem to be make check or anything similar.
+         #:test-target "ansi-tests/test_results"
          #:configure-flags '("--enable-ansi") ; required for use by the maxima package
          #:make-flags (list
                        (string-append "GCL_CC=" (assoc-ref %build-inputs "gcc")
@@ -327,14 +327,14 @@ an interpreter, a compiler, a debugger, and much more.")
 (define-public sbcl
   (package
     (name "sbcl")
-    (version "1.5.5")
+    (version "1.5.6")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "mirror://sourceforge/sbcl/sbcl/" version "/sbcl-"
                            version "-source.tar.bz2"))
        (sha256
-        (base32 "1qmapk2hyxxqd3ajiqacz4isij0ibx7gn10n8dbmq33gm3kgliyb"))
+        (base32 "10z43dc29p7s8dl3jixklhmzqfp7gcm3fccjdfd36qqhyfxqxx3a"))
        (modules '((guix build utils)))
        (snippet
         ;; Add sbcl-bundle-systems to 'default-system-source-registry'.
@@ -353,11 +353,21 @@ an interpreter, a compiler, a debugger, and much more.")
      ;;       ABCL (recent versions only)
      ;;       CLISP (only some versions: 2.44.1 is OK, 2.47 is not)
      ;;       XCL
-     ;; CCL seems ideal then, but it unfortunately only builds reliably
-     ;; on some architectures.
+     ;;
+     ;; From NEWS:
+     ;;     * build enhancement: new host quirks mechanism, support for building under
+     ;;     ABCL and ECL (as well as CCL, CMUCL, CLISP and SBCL itself)
+     ;;
+     ;; CCL is not bootstrappable so it won't do.  CLISP 2.49 seems to work.
+     ;; ECL too.  ECL builds SBCL about 20% slower than CLISP.  As of
+     ;; 2019-09-05, ECL was last updated in 2016 while CLISP was last update
+     ;; in 2010.
+     ;;
+     ;; For now we stick to CLISP for all systems.  We keep the `match' in to
+     ;; make it easier to change the host compiler for various architectures.
      `(,@(match (%current-system)
            ((or "x86_64-linux" "i686-linux")
-            `(("ccl" ,ccl)))
+            `(("clisp" ,clisp)))
            (_
             `(("clisp" ,clisp))))
        ("which" ,which)
@@ -428,7 +438,7 @@ an interpreter, a compiler, a debugger, and much more.")
              (setenv "CC" "gcc")
              (invoke "sh" "make.sh" ,@(match (%current-system)
                                         ((or "x86_64-linux" "i686-linux")
-                                         `("ccl"))
+                                         `("clisp"))
                                         (_
                                          `("clisp")))
                      (string-append "--prefix="
@@ -488,6 +498,15 @@ statistical profiler, a code coverage tool, and many other extensions.")
                    (license:x11-style "file://src/code/loop.lisp")))))
 
 (define-public ccl
+  ;; Warning: according to upstream, CCL is not bootstrappable.
+  ;; See https://github.com/Clozure/ccl/issues/222 from 2019-09-02:
+  ;;
+  ;;     "As far as I know, there is no way to build CCL without an existing
+  ;;     running CCL image. It was bootstrapped back in 1986 or so as
+  ;;     Macintosh Common Lisp, by Gary Byers, I believe, who is no longer on
+  ;;     the planet to tell us the story. It SHOULD be possible to port the
+  ;;     CCL compiler to portable Common Lisp, so that ANY lisp could build
+  ;;     it, as is the case for SBCL, but I know of no attempt to do so."
   (package
     (name "ccl")
     (version "1.11.5")
@@ -710,10 +729,44 @@ portable between implementations.")
 (define-public ecl-alexandria
   (sbcl-package->ecl-package sbcl-alexandria))
 
+(define-public sbcl-net.didierverna.asdf-flv
+  (package
+    (name "sbcl-net.didierverna.asdf-flv")
+    (version "2.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/didierverna/asdf-flv")
+             (commit (string-append "version-" version))))
+       (file-name (git-file-name "asdf-flv" version))
+       (sha256
+        (base32 "1fi2y4baxan103jbg4idjddzihy03kwnj2mzbwrknw4d4x7xlgwj"))))
+    (build-system asdf-build-system/sbcl)
+    (synopsis "Common Lisp ASDF extension to provide support for file-local variables")
+    (description "ASDF-FLV provides support for file-local variables through
+ASDF.  A file-local variable behaves like @code{*PACKAGE*} and
+@code{*READTABLE*} with respect to @code{LOAD} and @code{COMPILE-FILE}: a new
+dynamic binding is created before processing the file, so that any
+modification to the variable becomes essentially file-local.
+
+In order to make one or several variables file-local, use the macros
+@code{SET-FILE-LOCAL-VARIABLE(S)}.")
+    (home-page "https://www.lrde.epita.fr/~didier/software/lisp/misc.php#asdf-flv")
+    (license (license:non-copyleft
+              "https://www.gnu.org/prep/maintain/html_node/License-Notices-for-Other-Files.html"
+              "GNU All-Permissive License"))))
+
+(define-public cl-net.didierverna.asdf-flv
+  (sbcl-package->cl-source-package sbcl-net.didierverna.asdf-flv))
+
+(define-public ecl-net.didierverna.asdf-flv
+  (sbcl-package->ecl-package sbcl-net.didierverna.asdf-flv))
+
 (define-public sbcl-fiveam
   (package
     (name "sbcl-fiveam")
-    (version "1.2")
+    (version "1.4.1")
     (source
      (origin
        (method git-fetch)
@@ -722,8 +775,11 @@ portable between implementations.")
              (commit (string-append "v" version))))
        (file-name (git-file-name "fiveam" version))
        (sha256
-        (base32 "1yx9716mk8pq9076q6cjx4c9lyax3amiccy37sh0913k2x8gsm4l"))))
-    (inputs `(("alexandria" ,sbcl-alexandria)))
+        (base32 "1q3d38pwafnwnw42clq0f8g5xw7pbzr287jl9jsqmb1vb0n1vrli"))))
+    (inputs
+     `(("alexandria" ,sbcl-alexandria)
+       ("net.didierverna.asdf-flv" ,sbcl-net.didierverna.asdf-flv)
+       ("trivial-backtrace" ,sbcl-trivial-backtrace)))
     (build-system asdf-build-system/sbcl)
     (synopsis "Common Lisp testing framework")
     (description "FiveAM is a simple (as far as writing and running tests
@@ -2175,7 +2231,7 @@ also be supported.")
 (define-public sbcl-ironclad
   (package
     (name "sbcl-ironclad")
-    (version "0.42")
+    (version "0.46")
     (source
      (origin
        (method git-fetch)
@@ -2184,14 +2240,15 @@ also be supported.")
              (commit (string-append "v" version))))
        (sha256
         (base32
-         "1wjcb9vpybxjrmch7f7s78a5abxmnknbd4fl49dl5lz8a3fc8vf0"))
-       (file-name (string-append "ironblad" version "-checkout"))))
+         "1s391awi2lsl7m1dbjirgpkm4p9p8wd076pakgvsvpn1rrznisnd"))
+       (file-name (git-file-name name version))))
     (build-system asdf-build-system/sbcl)
     (native-inputs
      ;; Tests only.
      `(("rt" ,sbcl-rt)))
     (inputs
-     `(("flexi-streams" ,sbcl-flexi-streams)
+     `(("bordeaux-threads" ,sbcl-bordeaux-threads)
+       ("flexi-streams" ,sbcl-flexi-streams)
        ("nibbles" ,sbcl-nibbles)))
     (synopsis "Cryptographic toolkit written in Common Lisp")
     (description
@@ -5337,17 +5394,18 @@ port within a range.")
 (define-public txr
   (package
     (name "txr")
-    (version "223")
+    (version "224")
     (source
      (origin
-       (method url-fetch)
-       (uri (string-append "http://www.kylheku.com/cgit/txr/snapshot/txr-"
-                           version
-                           ".tar.bz2"))
+       (method git-fetch)
+       (uri (git-reference
+             (url "http://www.kylheku.com/git/txr/")
+             (commit (string-append "txr-" version))))
+       (file-name (git-file-name name version))
        (patches (search-patches "txr-shell.patch"))
        (sha256
         (base32
-         "0109q8idqggba3kx58dpm5ccfpdrki68npkcxm18p5ga24611fcv"))))
+         "1036k71f6mffy9rjwzmhr5nnp1n0wzb0rqvilpzvb8jc5yxv0810"))))
     (build-system gnu-build-system)
     (arguments
      '(#:configure-flags '("cc=gcc")
@@ -6740,3 +6798,66 @@ power of CXML is available when necessary.")
       (description "This is a Common Lisp library that allows to publish D-Bus
 objects as well as send and notify other objects connected to a bus.")
       (license license:bsd-2))))
+
+(define-public sbcl-cl-hooks
+  (let ((commit "5b638083f3b4f1221a52631d9c8a0a265565cac7")
+        (revision "1"))
+    (package
+      (name "sbcl-cl-hooks")
+      (build-system asdf-build-system/sbcl)
+      (version (git-version "0.2.1" revision commit))
+      (home-page "https://github.com/scymtym/architecture.hooks")
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url home-page)
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "0bg3l0a28lw5gqqjp6p6b5nhwqk46sgkb7184w5qbfngw1hk8x9y"))))
+      (inputs
+       `(("alexandria" ,sbcl-alexandria)
+         ("let-plus" ,sbcl-let-plus)
+         ("trivial-garbage" ,sbcl-trivial-garbage)
+         ("closer-mop" ,sbcl-closer-mop)))
+      (native-inputs
+       `(("fiveam" ,sbcl-fiveam)))
+      (synopsis "Hooks extension point mechanism (as in Emacs) for Common Lisp")
+      (description "A hook, in the present context, is a certain kind of
+extension point in a program that allows interleaving the execution of
+arbitrary code with the execution of a the program without introducing any
+coupling between the two.  Hooks are used extensively in the extensible editor
+Emacs.
+
+In the Common LISP Object System (CLOS), a similar kind of extensibility is
+possible using the flexible multi-method dispatch mechanism.  It may even seem
+that the concept of hooks does not provide any benefits over the possibilites
+of CLOS.  However, there are some differences:
+
+@itemize
+
+@item There can be only one method for each combination of specializers and
+qualifiers.  As a result this kind of extension point cannot be used by
+multiple extensions independently.
+@item Removing code previously attached via a @code{:before}, @code{:after} or
+@code{:around} method can be cumbersome.
+@item There could be other or even multiple extension points besides @code{:before}
+and @code{:after} in a single method.
+@item Attaching codes to individual objects using eql specializers can be
+cumbersome.
+@item Introspection of code attached a particular extension point is
+cumbersome since this requires enumerating and inspecting the methods of a
+generic function.
+@end itemize
+
+This library tries to complement some of these weaknesses of method-based
+extension-points via the concept of hooks.")
+      (license license:llgpl))))
+
+(define-public cl-hooks
+  (sbcl-package->cl-source-package sbcl-cl-hooks))
+
+(define-public ecl-cl-hooks
+  (sbcl-package->ecl-package sbcl-cl-hooks))
diff --git a/gnu/packages/mail.scm b/gnu/packages/mail.scm
index 30ce5cd70c..fdbb082fdc 100644
--- a/gnu/packages/mail.scm
+++ b/gnu/packages/mail.scm
@@ -1197,7 +1197,7 @@ delivery.")
 (define-public exim
   (package
     (name "exim")
-    (version "4.92.1")
+    (version "4.92.2")
     (source
      (origin
        (method url-fetch)
@@ -1206,7 +1206,7 @@ delivery.")
                   (string-append "https://ftp.exim.org/pub/exim/exim4/old/exim-"
                                  version ".tar.bz2")))
        (sha256
-        (base32 "132zmxgzz35xwi89g3crw6hd3y74rxj5zcpamakvrnlcn256amdp"))))
+        (base32 "1xnc5rdcg5mcrvjqp506a9frmcr89jwsh4c5vbks46awyz1rfzsm"))))
     (build-system gnu-build-system)
     (inputs
      `(("bdb" ,bdb-5.3) ; ‘#error Version 6 and later BDB API is not supported’
diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 5735c17bc6..16d3af3831 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -31,6 +31,7 @@
 ;;; Copyright © 2018 Julien Lepiller <julien@lepiller.eu>
 ;;; Copyright © 2018 Amin Bandali <bandali@gnu.org>
 ;;; Copyright © 2019 Nicolas Goaziou <mail@nicolasgoaziou.fr>
+;;; Copyright © 2019 Steve Sprang <scs@stevesprang.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -675,14 +676,14 @@ computations.")
 (define-public hdf4
   (package
     (name "hdf4")
-    (version "4.2.13")
+    (version "4.2.14")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "https://support.hdfgroup.org/ftp/HDF/releases/HDF"
                            version "/src/hdf-" version ".tar.bz2"))
        (sha256
-        (base32 "1wz0586zh91pqb95wvr0pbh71a8rz358fdj6n2ksp85x2cis9lsm"))
+        (base32 "0n29klrrbwan9307np0d9hr128dlpc4nnlf57a140080ll3jmp8l"))
        (patches (search-patches "hdf4-architectures.patch"
                                 "hdf4-reproducibility.patch"
                                 "hdf4-shared-fortran.patch"
@@ -5144,3 +5145,36 @@ algorithm, a parametric integer programming solver, and primitives for
 termination analysis via the automatic synthesis of linear ranking
 functions.")
     (license license:gpl3+)))
+
+(define-public speedcrunch
+  (package
+    (name "speedcrunch")
+    (version "0.12.0")
+    (source
+     (origin
+      (method git-fetch)
+      (uri (git-reference
+        (url "https://bitbucket.org/heldercorreia/speedcrunch.git")
+        (commit (string-append "release-" version))))
+      (file-name (git-file-name name version))
+      (sha256
+       (base32
+        "0vh7cd1915bjqzkdp3sk25ngy8cq624mkh8c53c5bnzk357kb0fk"))))
+    (build-system cmake-build-system)
+    (inputs `(("qtbase" ,qtbase)))
+    (native-inputs `(("qttools" ,qttools)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'chdir-to-src
+           (lambda _ (chdir "src") #t)))))
+    (synopsis "High-precision scientific calculator")
+    (description
+     "SpeedCrunch is a high-precision scientific calculator.  It features a
+syntax-highlighted scrollable display and is designed to be fully used via
+keyboard.  Some distinctive features are auto-completion of functions and
+variables, a formula book, and quick insertion of constants from various
+fields of knowledge.")
+    (home-page "http://speedcrunch.org/")
+    (license license:gpl2+)))
+
diff --git a/gnu/packages/mp3.scm b/gnu/packages/mp3.scm
index 967e299803..a218071edb 100644
--- a/gnu/packages/mp3.scm
+++ b/gnu/packages/mp3.scm
@@ -305,7 +305,7 @@ This package contains the binary.")
 (define-public mpg123
   (package
     (name "mpg123")
-    (version "1.25.10")
+    (version "1.25.12")
     (source (origin
               (method url-fetch)
               (uri (list (string-append "mirror://sourceforge/mpg123/mpg123/"
@@ -315,7 +315,7 @@ This package contains the binary.")
                           version ".tar.bz2")))
               (sha256
                (base32
-                "08vhp8lz7d9ybhxcmkq3adwfryhivfvp0745k4r9kgz4wap3f4vc"))))
+                "1l9iwwgqzw6yg5zk9pqmlbfyq6d8dqysbmj0j3m8dyrxd34wgzhz"))))
     (build-system gnu-build-system)
     (arguments '(#:configure-flags '("--with-default-audio=pulse")))
     (native-inputs `(("pkg-config" ,pkg-config)))
diff --git a/gnu/packages/music.scm b/gnu/packages/music.scm
index b6d09d14d7..db6c42f6b1 100644
--- a/gnu/packages/music.scm
+++ b/gnu/packages/music.scm
@@ -1999,14 +1999,14 @@ browser.")
 (define-public drumstick
   (package
     (name "drumstick")
-    (version "1.1.2")
+    (version "1.1.3")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://sourceforge/drumstick/"
                                   version "/drumstick-" version ".tar.bz2"))
               (sha256
                (base32
-                "0kljqyqj7s1i2z52i24x7ail1bywn6dcxxfbad5c59drm8wv94bp"))))
+                "1n9wvg79yvkygrkc8xd8pgrd3d7hqmr7gh24dccf0px23lla9b3m"))))
     (build-system cmake-build-system)
     (arguments
      `(#:tests? #f                      ; no test target
@@ -2042,6 +2042,52 @@ multiplatform realtime MIDI I/O library is also provided with various output
 backends, including ALSA, OSS, Network and FluidSynth.")
     (license license:gpl2+)))
 
+(define-public vmpk
+  (package
+    (name "vmpk")
+    (version "0.7.2")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "mirror://sourceforge/vmpk/vmpk/"
+                                  version "/vmpk-" version ".tar.bz2"))
+              (sha256
+               (base32
+                "1i3hnvdgz46n4k5v0q4jhgh7nkh0s390ix4nqr69z0q3026yp0p6"))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:tests? #f  ; no test target
+       #:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'fix-docbook
+           (lambda* (#:key inputs #:allow-other-keys)
+             (substitute* "cmake_admin/CreateManpages.cmake"
+               (("http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl")
+                (string-append (assoc-ref inputs "docbook-xsl")
+                               "/xml/xsl/docbook-xsl-"
+                               ,(package-version docbook-xsl)
+                               "/manpages/docbook.xsl")))
+             #t)))))
+    (inputs
+     `(("drumstick" ,drumstick)
+       ("qtbase" ,qtbase)
+       ("qtsvg" ,qtsvg)
+       ("qttools" ,qttools)
+       ("qtx11extras" ,qtx11extras)))
+    (native-inputs
+     `(("libxslt" ,libxslt) ;for xsltproc
+       ("docbook-xsl" ,docbook-xsl)
+       ("pkg-config" ,pkg-config)))
+    (home-page "http://vmpk.sourceforge.net")
+    (synopsis "Virtual MIDI piano keyboard")
+    (description
+     "Virtual MIDI Piano Keyboard is a MIDI events generator and receiver.  It
+doesn't produce any sound by itself, but can be used to drive a MIDI
+synthesizer (either hardware or software, internal or external).  You can use
+the computer's keyboard to play MIDI notes, and also the mouse.  You can use
+the Virtual MIDI Piano Keyboard to display the played MIDI notes from another
+instrument or MIDI file player.")
+    (license license:gpl3+)))
+
 (define-public zynaddsubfx
   (package
     (name "zynaddsubfx")
@@ -2091,7 +2137,7 @@ capabilities, custom envelopes, effects, etc.")
 (define-public yoshimi
   (package
     (name "yoshimi")
-    (version "1.5.10.2")
+    (version "1.6.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://sourceforge/yoshimi/"
@@ -2099,7 +2145,7 @@ capabilities, custom envelopes, effects, etc.")
                                   "/yoshimi-" version ".tar.bz2"))
               (sha256
                (base32
-                "1rr99qkq80s8l2iv3x4ccxan07m15dvmd5s9b10386bfjbwbya01"))))
+                "0bcc5spnq73yp1fmm367d1mxcswqkmzs3cnpb4cxr513ir98sa50"))))
     (build-system cmake-build-system)
     (arguments
      `(#:tests? #f ; there are no tests
diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index bd66ab04aa..146fb63d5e 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -428,7 +428,7 @@ the opam file fomat.")
 (define-public opam
   (package
     (name "opam")
-    (version "2.0.4")
+    (version "2.0.5")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -437,7 +437,7 @@ the opam file fomat.")
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "1yx5k8v5vnnc20fmz5zx8kqd242j48qcknlk6vmkr7rkq886ipq2"))))
+                "0pf2smq2sdcxryq5i87hz3dv05pb3zasb1is3kxq1pi1s4cn55mx"))))
     (build-system ocaml-build-system)
     (arguments
      `(#:configure-flags
@@ -1109,7 +1109,7 @@ files in these formats.")
 (define-public ocaml-zarith
   (package
     (name "ocaml-zarith")
-    (version "1.7")
+    (version "1.9.1")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -1117,7 +1117,7 @@ files in these formats.")
                      (commit (string-append "release-" version))))
               (sha256
                (base32
-                "08x5xnamibhvxl50f1bb3jl9ym0hm6004hmc54xnrnrv7jxz9rvz"))))
+                "0hv5ywz1q2cgn8apfz490clwk5hcynr937g2v8i13x2ax4bnv0lz"))))
     (build-system ocaml-build-system)
     (native-inputs
      `(("perl" ,perl)))
@@ -1140,7 +1140,7 @@ for speed and space economy.")
 (define-public ocaml-frontc
   (package
     (name "ocaml-frontc")
-    (version "3.4.1")
+    (version "3.4.2")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -1150,7 +1150,7 @@ for speed and space economy.")
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "1dq5nks0c9gsbr1m8k39m1bniawr5hqcy1r8x5px7naa95ch06ak"))))
+                "0k7jk9hkglnkk27s62xl493jyqc017gyvwqb1lyc0ywbb001s102"))))
     (build-system ocaml-build-system)
     (arguments
      `(#:phases
@@ -1186,7 +1186,7 @@ GNU CC attributes.  It provides also a C pretty printer as an example of use.")
 (define-public ocaml-qcheck
   (package
     (name "ocaml-qcheck")
-    (version "0.9")
+    (version "0.10")
     (source
      (origin
        (method git-fetch)
@@ -1195,7 +1195,7 @@ GNU CC attributes.  It provides also a C pretty printer as an example of use.")
              (commit version)))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "0w83v9ylycsssyn47q8wnkfbvhn5vn10z6i35n5965i2m1r0mmcf"))))
+        (base32 "1i7axg7vmivrkzsahyg79my584myvzxv0922k4000bdwnhzd0kzh"))))
     (build-system dune-build-system)
     (arguments
      `(#:test-target "."))
@@ -1242,7 +1242,7 @@ to use -- to sophisticated random generation of test cases.")
 (define-public ocaml-stringext
   (package
     (name "ocaml-stringext")
-    (version "1.5.0")
+    (version "1.6.0")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -1251,7 +1251,7 @@ to use -- to sophisticated random generation of test cases.")
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "0035pyakk0r7pfhkrayvqncpv9mk6lssr455j3prmdcirh6s50d7"))))
+                "1m09cmn3vrk3gdm60fb730qsygcfyxsyv7gl9xfzck08q1x2x9qx"))))
     (build-system dune-build-system)
     (arguments
      `(#:test-target "."))
@@ -1317,14 +1317,16 @@ coverage information.")
 (define-public dune
   (package
     (name "dune")
-    (version "1.9.3")
+    (version "1.11.3")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/ocaml/dune/releases/"
-                                  "download/" version "/dune-" version ".tbz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/ocaml/dune")
+                     (commit version)))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1jlhnx580v6i1d451z5cl8ibfd0m9qln963y2pp5v6s2winyqyri"))))
+                "0l4x0x2fz135pljv88zj8y6w1ninsqw0gn1mdxzprd6wbxbyn8wr"))))
     (build-system ocaml-build-system)
     (arguments
      `(#:tests? #f; require odoc
@@ -1347,7 +1349,7 @@ following a very simple s-expression syntax.")
 (define-public ocaml-migrate-parsetree
   (package
     (name "ocaml-migrate-parsetree")
-    (version "1.2.0")
+    (version "1.4.0")
     (home-page "https://github.com/ocaml-ppx/ocaml-migrate-parsetree")
     (source
      (origin
@@ -1358,7 +1360,7 @@ following a very simple s-expression syntax.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "16kas19iwm4afijv3yxd250s08absabmdcb4yj57wc8r4fmzv5dm"))))
+         "0sv1p4615l8gpbah4ya2c40yr6fbvahvv3ks7zhrsgcwcq2ljyr2"))))
     (build-system dune-build-system)
     (arguments
      `(#:tests? #f))
@@ -1376,16 +1378,16 @@ functions to the next and/or previous version.")
 (define-public ocaml-ppx-tools-versioned
   (package
     (name "ocaml-ppx-tools-versioned")
-    (version "5.2.1")
+    (version "5.2.3")
     (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/ocaml-ppx/"
-                                  "ppx_tools_versioned/archive/"
-                                  version ".tar.gz"))
-              (file-name (string-append name "-" version ".tar.gz"))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/ocaml-ppx/ppx_tools_versioned")
+                     (commit version)))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1x2xfjpkzbcz4rza1d7gh3ipliw6jqfcklbsln82v3561qgkqgmh"))))
+                "1hcmpnw26zf70a71r3d2c2c0mn8q084gdn1r36ynng6fv9hq6j0y"))))
     (build-system dune-build-system)
     (arguments
      `(#:test-target "."))
@@ -1435,7 +1437,7 @@ powerful.")
 (define-public ocaml-result
   (package
     (name "ocaml-result")
-    (version "1.3")
+    (version "1.4")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -1444,7 +1446,7 @@ powerful.")
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "081ayblszn9pj2rqcif40x6cz2zda48vi45gy49rc2qfc4gszry3"))))
+                "0hir97k9i72nfkm6kncxnqpyk400wlsxysbldgcvk0fd9pjnsc3p"))))
     (build-system dune-build-system)
     (arguments
      `(#:test-target "."))
@@ -1798,7 +1800,7 @@ lets the client choose the concrete timeline.")
 (define-public ocaml-ssl
   (package
     (name "ocaml-ssl")
-    (version "0.5.7")
+    (version "0.5.9")
     (source
       (origin
         (method git-fetch)
@@ -1807,7 +1809,7 @@ lets the client choose the concrete timeline.")
               (commit version)))
         (file-name (git-file-name name version))
         (sha256 (base32
-                  "06zxqnwqkvf7pmj5s44jflkknv01czgbi4nbaac0ys1p7rv99y3x"))))
+                  "04h02rvzrwp886n5hsx84rnc9b150iggy38g5v1x1rwz3pkdnmf0"))))
     (build-system dune-build-system)
     (arguments
      `(#:test-target "."))
@@ -1868,15 +1870,16 @@ locks or other synchronization primitives.")
 (define-public ocaml-lwt-log
   (package
     (name "ocaml-lwt-log")
-    (version "1.1.0")
-    (source
-      (origin
-        (method url-fetch)
-        (uri (string-append "https://github.com/aantron/lwt_log/archive/" version
-                            ".tar.gz"))
-        (file-name (string-append name "-" version ".tar.gz"))
-        (sha256 (base32
-                  "1lr62j2266pbsi54xmzsfvl2z7fi7smhak7fp1ybl8hssxwi6in2"))))
+    (version "1.1.1")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/aantron/lwt_log")
+                     (commit version)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1n12i1rmn9cjn6p8yr6qn5dwbrwvym7ckr7bla04a1xnq8qlcyj7"))))
     (build-system dune-build-system)
     (arguments
      `(#:tests? #f; require lwt_ppx
@@ -2276,7 +2279,7 @@ many additional enhancements, including:
 (define-public ocaml-batteries
   (package
     (name "ocaml-batteries")
-    (version "2.9.0")
+    (version "2.10.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://github.com/ocaml-batteries-team/"
@@ -2284,7 +2287,7 @@ many additional enhancements, including:
                                   version "/batteries-" version ".tar.gz"))
               (sha256
                (base32
-                "0lkdmv2my5hirkswmci2cch341n6wkkj2q8apjhs83sg6528caxi"))))
+                "08ghw87d56h1a6y1nnh3x2wy9xj25jqfk5sp6ma9nsyd37babb0h"))))
     (build-system ocaml-build-system)
     (native-inputs
      `(("ocamlbuild" ,ocamlbuild)
@@ -2381,20 +2384,63 @@ language.")
 can match the question using a regular expression or a timeout.")
     (license license:lgpl2.1+))) ; with the OCaml static compilation exception
 
+(define-public ocaml-stdlib-shims
+  (package
+    (name "ocaml-stdlib-shims")
+    (version "0.1.0")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/ocaml/stdlib-shims")
+                     (commit version)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "007dwywsr5285z0np6a9nr0h8iqmyzfrlx6s5xaqcwj69zabsrjm"))))
+    (build-system dune-build-system)
+    (home-page "https://github.com/ocaml/stdlib-shims")
+    (synopsis "OCaml stdlib features backport to older OCaml compilers")
+    (description "This package backports some of the new stdlib features to
+older compilers, such as the Stdlib module.  This allows projects that require
+compatibility with older compiler to use these new features in their code.")
+    ;; with ocaml-linking exception
+    (license license:lgpl2.1+)))
+
 (define-public ocaml-fileutils
   (package
     (name "ocaml-fileutils")
-    (version "0.5.3")
+    (version "0.6.0")
     (source (origin
-              (method url-fetch)
-              (uri (ocaml-forge-uri name version 1728))
+              (method git-fetch)
+              (uri (git-reference
+                     (url "https://github.com/gildor478/ocaml-fileutils")
+                     (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "1rc4cqlvdhbs55i85zfbfhz938fsy4fj6kwlkfm3ra7bpwn8bmpd"))))
+                "06gxbqfssl16xc8y4d34wpm0mwfr0jgph4lmlwfmgazyggnmvc7m"))))
     (build-system ocaml-build-system)
+    (arguments
+     '(#:phases
+       (modify-phases %standard-phases
+         (add-before 'configure 'set-topfind
+           (lambda* (#:key inputs #:allow-other-keys)
+             ;; add the line #directory ".." at the top of each file
+             ;; using #use "topfind";; to be able to find topfind
+             (let* ((findlib-path (assoc-ref inputs "findlib"))
+                    (findlib-libdir
+                     (string-append findlib-path "/lib/ocaml/site-lib")))
+               (substitute* "setup.ml"
+                 (("#use \"topfind\";;" all)
+                  (string-append "#directory \"" findlib-libdir "\"\n"
+                                 all))))
+             #t)))))
+    (propagated-inputs
+     `(("ocaml-stdlib-shims" ,ocaml-stdlib-shims)))
     (native-inputs
      `(("ocamlbuild" ,ocamlbuild)
-       ("ounit" ,ocaml-ounit)))
+       ("ocaml-oasis" ,ocaml-oasis)
+       ("ocaml-ounit" ,ocaml-ounit)))
     (home-page "http://ocaml-fileutils.forge.ocamlcore.org")
     (synopsis "Pure OCaml functions to manipulate real file and filename")
     (description "Library to provide pure OCaml functions to manipulate real
@@ -2466,15 +2512,16 @@ from the oasis build log
 (define-public ocaml-cppo
   (package
     (name "ocaml-cppo")
-    (version "1.6.5")
+    (version "1.6.6")
     (source
       (origin
-        (method url-fetch)
-        (uri (string-append "https://github.com/mjambon/cppo/archive/v" version
-                            ".tar.gz"))
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/mjambon/cppo")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
         (sha256 (base32
-                  "1dkm3d5h6h56y937gcdk2wixlpzl59vv5pmiafglr89p20kf7gqf"))
-        (file-name (string-append name "-" version ".tar.gz"))))
+                  "1smcc0l6fh2n0y6bp96c69j5nw755jja99w0b206wx3yb2m4w2hs"))))
     (build-system dune-build-system)
     (arguments
      `(#:tests? #f
@@ -2706,19 +2753,28 @@ JSON.")
 (define-public ocaml-easy-format
   (package
     (name "ocaml-easy-format")
-    (version "1.3.1")
+    (version "1.3.2")
     (source (origin
               (method git-fetch)
               (uri (git-reference
                      (url "https://github.com/mjambon/easy-format")
-                     (commit (string-append "v" version))))
+                     (commit version)))
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "0jfncci15b8sf1y72yrxfjlsmhs9aavcd14vwz4d7kj8k9w9c4qk"))))
+                "1fc95q2ypck6m6rv3kiawwilh5ac93v2hcp823mj608d5kj79xkb"))))
     (build-system dune-build-system)
     (arguments
-     `(#:jbuild? #t))
+     `(#:jbuild? #t
+       #:phases
+       (modify-phases %standard-phases
+         (add-before 'build 'make-writable
+           (lambda _
+             (for-each
+               (lambda (file)
+                 (chmod file #o644))
+               (find-files "." "."))
+             #t)))))
     (home-page "https://github.com/mjambon/easy-format")
     (synopsis "Interface to the Format module")
     (description "Easy-format is a high-level and functional interface to the
@@ -2950,7 +3006,7 @@ the plugins facilitate extensibility, and the frontends serve as entry points.")
 (define-public ocaml-camomile
   (package
     (name "ocaml-camomile")
-    (version "1.0.1")
+    (version "1.0.2")
     (home-page "https://github.com/yoriyuki/Camomile")
     (source (origin
               (method url-fetch)
@@ -2958,18 +3014,19 @@ the plugins facilitate extensibility, and the frontends serve as entry points.")
                                   "/camomile-" version ".tbz"))
               (sha256
                (base32
-                "01ssjrqz41jvrqh27jxnh9cx7ywi9b5sgsykd00i7z9nrcwhlfy2"))))
+                "0chn7ldqb3wyf95yhmsxxq65cif56smgz1mhhc7m0dpwmyq1k97h"))))
     (build-system dune-build-system)
     (native-inputs
      `(("camlp4" ,camlp4)))
     (arguments
-     `(#:build-flags (list "--profile" "realease")
+     `(#:build-flags (list "--profile" "release")
        #:test-target "camomile-test"
+       #:tests? #f; Tests fail, see https://github.com/yoriyuki/Camomile/issues/82
        #:phases
        (modify-phases %standard-phases
          (add-before 'build 'fix-usr-share
            (lambda* (#:key outputs #:allow-other-keys)
-             (substitute* '("Camomile/jbuild" "configure.ml")
+             (substitute* '("Camomile/dune" "configure.ml")
                (("/usr/share") (string-append (assoc-ref outputs "out") "/share")))
              #t)))))
     (synopsis "Comprehensive Unicode library")
@@ -2980,10 +3037,34 @@ library is currently designed for Unicode Standard 3.2.")
     ;; with an exception for linked libraries to use a different license
     (license license:lgpl2.0+)))
 
+(define-public ocaml-charinfo-width
+  (package
+    (name "ocaml-charinfo-width")
+    (version "1.1.0")
+    (source (origin
+              (method url-fetch)
+              (uri "https://bitbucket.org/zandoye/charinfo_width/get/1.1.0.tar.gz")
+              (sha256
+               (base32
+                "00bv4p1yqs8y0z4z07wd9w9yyv669dikp9b04dcjbwpiy2wy0086"))))
+    (build-system dune-build-system)
+    (propagated-inputs
+     `(("ocaml-result" ,ocaml-result)
+       ("ocaml-camomile" ,ocaml-camomile)))
+    (native-inputs
+     `(("ocaml-ppx-expect" ,ocaml-ppx-expect)))
+    (properties
+     `((upstream-name . "charInfo_width")))
+    (home-page "https://bitbucket.org/zandoye/charinfo_width/")
+    (synopsis "Determine column width for a character")
+    (description "This module is implements purely in OCaml a character width
+function that follows the prototype of POSIX's wcwidth.")
+    (license license:expat)))
+
 (define-public ocaml-zed
   (package
     (name "ocaml-zed")
-    (version "1.6")
+    (version "2.0.3")
     (source
      (origin
        (method git-fetch)
@@ -2992,14 +3073,15 @@ library is currently designed for Unicode Standard 3.2.")
              (commit version)))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "00hhxcjf3bj3w2qm8nzs9x6vrqkadf4i0277s5whzy2rmiknj63v"))))
+        (base32 "0pa9awinqr0plp4b2az78dwpvh01pwaljnn5ydg8mc6hi7rmir55"))))
     (build-system dune-build-system)
     (arguments
      `(#:jbuild? #t
        #:test-target "."))
     (propagated-inputs
-     `(("camomile" ,ocaml-camomile)
-       ("react" ,ocaml-react)))
+     `(("ocaml-camomile" ,ocaml-camomile)
+       ("ocaml-charinfo-width" ,ocaml-charinfo-width)
+       ("ocaml-react" ,ocaml-react)))
     (home-page "https://github.com/diml/zed")
     (synopsis "Abstract engine for text editing in OCaml")
     (description "Zed is an abstract engine for text edition.  It can be used
@@ -3010,7 +3092,7 @@ connect an engine to your inputs and rendering functions to get an editor.")
 (define-public ocaml-lambda-term
   (package
     (name "ocaml-lambda-term")
-    (version "1.13")
+    (version "2.0.2")
     (source
      (origin
        (method git-fetch)
@@ -3019,7 +3101,7 @@ connect an engine to your inputs and rendering functions to get an editor.")
              (commit version)))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "0wwib20b2ir3h2g9zwhzn04cv160psb805skp8v23wqgyn5cnbh8"))))
+        (base32 "0zcjy6fvf0d3i2ssz96asl889n3r6bplyzk7xvb2s3dkxbgcisyy"))))
     (build-system dune-build-system)
     (arguments
      `(#:build-flags (list "--profile" "release")
@@ -3041,7 +3123,7 @@ instead of bindings to a C library.")
 (define-public ocaml-utop
   (package
     (name "ocaml-utop")
-    (version "2.3.0")
+    (version "2.4.1")
     (source
      (origin
        (method git-fetch)
@@ -3050,7 +3132,7 @@ instead of bindings to a C library.")
              (commit version)))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "0xvibb97vzzh7yabr5ajhilriwz8cg4c506lxq0bd7ss3aci9han"))))
+        (base32 "1jm3sagissbw8012mnppknsxl9dqd9514b891b64disqhdb5awg3"))))
     (build-system dune-build-system)
     (arguments
      `(#:jbuild? #t
@@ -3468,19 +3550,29 @@ than the first one.")
 (define-public ocaml-biniou
  (package
    (name "ocaml-biniou")
-   (version "1.2.0")
+   (version "1.2.1")
    (home-page "https://github.com/mjambon/biniou")
     (source
      (origin
        (method git-fetch)
        (uri (git-reference
              (url (string-append home-page ".git"))
-             (commit (string-append "v" version))))
+             (commit version)))
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "0mjpgwyfq2b2izjw0flmlpvdjgqpq8shs89hxj1np2r50csr8dcb"))))
+         "0x2kiy809n1j0yf32l7hj102y628jp5jdrkbi3z7ld8jq04h1790"))))
    (build-system dune-build-system)
+   (arguments
+    `(#:phases
+      (modify-phases %standard-phases
+        (add-before 'build 'make-writable
+          (lambda _
+            (for-each
+              (lambda (file)
+                (chmod file #o644))
+              (find-files "." "."))
+            #t)))))
    (inputs
     `(("ocaml-easy-format" ,ocaml-easy-format)))
    (native-inputs
@@ -4983,7 +5075,7 @@ the full Core is not available, such as in Javascript.")
 (define-public ocaml-markup
   (package
     (name "ocaml-markup")
-    (version "0.8.0")
+    (version "0.8.1")
     (home-page "https://github.com/aantron/markup.ml")
     (source
      (origin
@@ -4994,10 +5086,11 @@ the full Core is not available, such as in Javascript.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "0aif4abvfmi9xc1pvw5n5rbm6rzkkpsxyvdn0lanr33rjpvkwdlm"))))
+         "0gzdjfnkv56vhmpvi9xpv1p05z50y55izhn156bkmb35s6izxds3"))))
     (build-system dune-build-system)
-    (inputs
-     `(("ocaml-uchar" ,ocaml-uchar)
+    (propagated-inputs
+     `(("ocaml-bisect-ppx" ,ocaml-bisect-ppx)
+       ("ocaml-uchar" ,ocaml-uchar)
        ("ocaml-uutf" ,ocaml-uutf)
        ("ocaml-lwt" ,ocaml-lwt)))
     (native-inputs `(("ocaml-ounit" ,ocaml-ounit)))
@@ -5072,10 +5165,22 @@ combinators.")
         (base32
          "1vp3qvrkz7q25nbmvd40vhsnz2k9aqh17bnd21i3q8q0xlr5hdag"))))
     (build-system dune-build-system)
-    (inputs
+    (propagated-inputs
      `(("ocaml-migrate-parsetree" ,ocaml-migrate-parsetree)
        ("ocaml-ppx-tools-versioned" ,ocaml-ppx-tools-versioned)
        ("ocaml-ounit" ,ocaml-ounit)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-before 'build 'fix-deprecated
+           (lambda _
+             ;; Fixed upstream in 22dd1ad9a0c9629f60599c22d82c6488394d6d32, but
+             ;; not in a release yet.
+             (substitute* "src/ppx/instrument.ml"
+               (("module Ast = Ast_405")
+                "module Ast = Migrate_parsetree.Ast_405
+module Ast_405 = Ast"))
+             #t)))))
     (home-page "https://github.com/aantron/bisect_ppx")
     (synopsis "Code coverage for OCaml")
     (description "Bisect_ppx helps you test thoroughly.  It is a small
@@ -5090,7 +5195,7 @@ then run the Bisect_ppx report tool on the generated visitation files.")
 (define-public ocaml-odoc
   (package
     (name "ocaml-odoc")
-    (version "1.4.0")
+    (version "1.4.1")
     (source
      (origin
        (method git-fetch)
@@ -5100,7 +5205,7 @@ then run the Bisect_ppx report tool on the generated visitation files.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "0br11cw6wa0mwafja4xdb45d2f8908l6nzdq5mw5lbfq2jnp68km"))))
+         "1i2j0krbzvb1n3dcic9h1pyyqxmf051ky82nrcyzx1nwqjb8zfh6"))))
     (build-system dune-build-system)
     (inputs
      `(("ocaml-alcotest" ,ocaml-alcotest)
diff --git a/gnu/packages/package-management.scm b/gnu/packages/package-management.scm
index 49ac949b06..57589d852c 100644
--- a/gnu/packages/package-management.scm
+++ b/gnu/packages/package-management.scm
@@ -544,7 +544,7 @@ transactions from C or Python.")
     (license license:gpl2+)))
 
 (define-public diffoscope
-  (let ((version "121"))
+  (let ((version "122"))
     (package
       (name "diffoscope")
       (version version)
@@ -556,7 +556,7 @@ transactions from C or Python.")
                 (file-name (git-file-name name version))
                 (sha256
                  (base32
-                  "1bw7s8qs1vnr93vhifl6pj6h6w6r6nrpc5anzhh9wx2gcaipkb3m"))))
+                  "1pwddknk8qyv88ba63why8vbnlc14b47434lv4ijx49m7ya3zfvg"))))
       (build-system python-build-system)
       (arguments
        `(#:phases (modify-phases %standard-phases
@@ -963,7 +963,7 @@ for packaging and deployment of cross-compiled Windows applications.")
 (define-public libostree
   (package
     (name "libostree")
-    (version "2018.9.1")
+    (version "2019.3")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -971,7 +971,7 @@ for packaging and deployment of cross-compiled Windows applications.")
                     (version-major+minor version) "/libostree-" version ".tar.xz"))
               (sha256
                (base32
-                "01mygpkbl9sk2vr3hjbpih6qlg8lwx0q5lklm09f7jfwfpnwyqzj"))))
+                "1r07yqbc9iiq0lzv1pryppd35fv695ym8r040msbfc93pmiy77y0"))))
     (build-system gnu-build-system)
     (arguments
      '(#:phases
@@ -983,13 +983,14 @@ for packaging and deployment of cross-compiled Windows applications.")
              (setenv "TEST_TMPDIR" (getenv "TMPDIR"))
              #t)))
        ;; XXX: fails with:
+       ;;     tap-driver.sh: missing test plan
        ;;     tap-driver.sh: internal error getting exit status
        ;;     tap-driver.sh: fatal: I/O or internal error
        #:tests? #f))
     (native-inputs
      `(("attr" ,attr)                   ; for tests
        ("bison" ,bison)
-       ("glib:bin" ,glib "bin")          ; for 'glib-mkenums'
+       ("glib:bin" ,glib "bin")         ; for 'glib-mkenums'
        ("gobject-introspection" ,gobject-introspection)
        ("pkg-config" ,pkg-config)
        ("xsltproc" ,libxslt)))
diff --git a/gnu/packages/patches/twinkle-include-qregexpvalidator.patch b/gnu/packages/patches/twinkle-include-qregexpvalidator.patch
deleted file mode 100755
index 4096cc8712..0000000000
--- a/gnu/packages/patches/twinkle-include-qregexpvalidator.patch
+++ /dev/null
@@ -1,123 +0,0 @@
-Copied from upstream:
-
-https://github.com/LubosD/twinkle/commit/4b42755619011c117a76bdf98e417ebedc47e319
-
-From 4b42755619011c117a76bdf98e417ebedc47e319 Mon Sep 17 00:00:00 2001
-From: Michal Kubecek <mkubecek@suse.cz>
-Date: Wed, 6 Jun 2018 10:07:21 +0200
-Subject: [PATCH] Include <QRegExpValidator> explicitly
-
-Since Qt 5.11, generated ui_getprofilename.h no longer includes QHeaderView
-which breaks the chain that included qvalidator.h in getprofilename.cpp.
-As it feels rather fragile to rely on such indirect includes, let's include
-<QRegExpValidator> explicitly in each file using QRegExpValidator class.
----
- src/gui/diamondcardprofileform.cpp | 1 +
- src/gui/getprofilenameform.cpp     | 2 +-
- src/gui/inviteform.cpp             | 1 +
- src/gui/mphoneform.cpp             | 1 +
- src/gui/numberconversionform.cpp   | 1 +
- src/gui/syssettingsform.cpp        | 1 +
- src/gui/userprofileform.cpp        | 1 +
- src/gui/wizardform.cpp             | 1 +
- 8 files changed, 8 insertions(+), 1 deletion(-)
-
-diff --git a/src/gui/diamondcardprofileform.cpp b/src/gui/diamondcardprofileform.cpp
-index 6656909..517180b 100644
---- a/src/gui/diamondcardprofileform.cpp
-+++ b/src/gui/diamondcardprofileform.cpp
-@@ -21,6 +21,7 @@
- 
- #include <QRegExp>
- #include <QValidator>
-+#include <QRegExpValidator>
- #include "gui.h"
- #include "diamondcard.h"
- #include "getprofilenameform.h"
-diff --git a/src/gui/getprofilenameform.cpp b/src/gui/getprofilenameform.cpp
-index 1319e1d..89c715e 100644
---- a/src/gui/getprofilenameform.cpp
-+++ b/src/gui/getprofilenameform.cpp
-@@ -1,7 +1,7 @@
- #include "getprofilenameform.h"
--
- #include <QDir>
- #include <QMessageBox>
-+#include <QRegExpValidator>
- #include "user.h"
- #include "protocol.h"
- 
-diff --git a/src/gui/inviteform.cpp b/src/gui/inviteform.cpp
-index 433fb22..2a5b68d 100644
---- a/src/gui/inviteform.cpp
-+++ b/src/gui/inviteform.cpp
-@@ -7,6 +7,7 @@
- #include "sys_settings.h"
- #include <QRegExp>
- #include <QValidator>
-+#include <QRegExpValidator>
- 
- /*
-     Copyright (C) 2005-2009  Michel de Boer <michel@twinklephone.com>
-diff --git a/src/gui/mphoneform.cpp b/src/gui/mphoneform.cpp
-index 260fda7..c4e3c1d 100644
---- a/src/gui/mphoneform.cpp
-+++ b/src/gui/mphoneform.cpp
-@@ -54,6 +54,7 @@
- #include <QRegExp>
- #include <QValidator>
- #include <QSettings>
-+#include <QRegExpValidator>
- #include "buddyform.h"
- #include "diamondcardprofileform.h"
- #include "osd.h"
-diff --git a/src/gui/numberconversionform.cpp b/src/gui/numberconversionform.cpp
-index f8ae64c..8481a9b 100644
---- a/src/gui/numberconversionform.cpp
-+++ b/src/gui/numberconversionform.cpp
-@@ -1,5 +1,6 @@
- #include "numberconversionform.h"
- 
-+#include <QRegExpValidator>
- #include "gui.h"
- 
- /*
-diff --git a/src/gui/syssettingsform.cpp b/src/gui/syssettingsform.cpp
-index 216af54..355df59 100644
---- a/src/gui/syssettingsform.cpp
-+++ b/src/gui/syssettingsform.cpp
-@@ -28,6 +28,7 @@
- #include "twinkle_config.h"
- #include <QRegExp>
- #include <QValidator>
-+#include <QRegExpValidator>
- #include "syssettingsform.h"
- /*
-  *  Constructs a SysSettingsForm as a child of 'parent', with the
-diff --git a/src/gui/userprofileform.cpp b/src/gui/userprofileform.cpp
-index 28700a6..9ed9209 100644
---- a/src/gui/userprofileform.cpp
-+++ b/src/gui/userprofileform.cpp
-@@ -31,6 +31,7 @@
- #include <QStringList>
- #include "twinkle_config.h"
- #include <QListWidget>
-+#include <QRegExpValidator>
- #include "numberconversionform.h"
- #include "util.h"
- #include "userprofileform.h"
-diff --git a/src/gui/wizardform.cpp b/src/gui/wizardform.cpp
-index 777aa12..f925875 100644
---- a/src/gui/wizardform.cpp
-+++ b/src/gui/wizardform.cpp
-@@ -23,6 +23,7 @@
- #include <QTextStream>
- #include "gui.h"
- #include <QFile>
-+#include <QRegExpValidator>
- #include "wizardform.h"
- 
- #define PROV_NONE	QT_TRANSLATE_NOOP("WizardForm", "None (direct IP to IP calls)")
--- 
-2.17.0
-
diff --git a/gnu/packages/patches/xfce4-session-fix-xflock4.patch b/gnu/packages/patches/xfce4-session-fix-xflock4.patch
deleted file mode 100644
index 74769e4257..0000000000
--- a/gnu/packages/patches/xfce4-session-fix-xflock4.patch
+++ /dev/null
@@ -1,31 +0,0 @@
-From cbb9c769316b4d32956a2c78aa01a38b473f0cfc Mon Sep 17 00:00:00 2001
-From: David Thompson <dthompson2@worcester.edu>
-Date: Fri, 30 Oct 2015 08:30:43 -0400
-Subject: [PATCH] xflock4: Do not override PATH with hardcoded value.
-
-The PATH "/bin:/usr/bin" may not be a valid search path on the user's
-machine.  The screen locking program may be in /usr/local/bin or
-elsewhere.  Distros that do not conform to the FHS, such as GuixSD and
-NixOS, will not have their executables in either location.  Thus, we
-simply leave PATH alone.
----
- scripts/xflock4 | 3 ---
- 1 file changed, 3 deletions(-)
-
-diff --git a/scripts/xflock4 b/scripts/xflock4
-index ec4d05d..e7981ac 100644
---- a/scripts/xflock4
-+++ b/scripts/xflock4
-@@ -21,9 +21,6 @@
- #  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- #
- 
--PATH=/bin:/usr/bin
--export PATH
--
- # Lock by xscreensaver or gnome-screensaver, if a respective daemon is running
- for lock_cmd in \
-     "xscreensaver-command -lock" \
--- 
-2.5.0
-
diff --git a/gnu/packages/photo.scm b/gnu/packages/photo.scm
index b445374718..f6d86f0857 100644
--- a/gnu/packages/photo.scm
+++ b/gnu/packages/photo.scm
@@ -70,14 +70,14 @@
 (define-public libraw
   (package
     (name "libraw")
-    (version "0.19.4")
+    (version "0.19.5")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://www.libraw.org/data/LibRaw-"
                                   version ".tar.gz"))
               (sha256
                (base32
-                "07wnzw9k3mwdq9dmpmg94al3ksc065kskfbxkknnmhvrsv2iri8k"))))
+                "1x827sh6vl8j3ll2ihkcr234y07f31hi1v7sl08jfw3irkbn58j0"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)))
diff --git a/gnu/packages/php.scm b/gnu/packages/php.scm
index 497989b781..ca7f0ee892 100644
--- a/gnu/packages/php.scm
+++ b/gnu/packages/php.scm
@@ -364,7 +364,7 @@
        ("libxpm" ,libxpm)
        ("libxslt" ,libxslt)
        ("libx11" ,libx11)
-       ("oniguruma" ,oniguruma-5)
+       ("oniguruma" ,oniguruma)
        ("openldap" ,openldap)
        ("openssl" ,openssl)
        ("pcre" ,pcre2)
diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 43e341b43d..296879f534 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -4081,14 +4081,14 @@ operators such as union, intersection, and difference.")
 (define-public python-scipy
   (package
     (name "python-scipy")
-    (version "1.2.2")
+    (version "1.3.1")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "scipy" version))
        (sha256
         (base32
-         "1cgvgin8fvckv96hjh3ikmwkra5rif51bdb75ifzf7xbil5iwcx4"))))
+         "1df113c9i6vazsn6y3n9wc22jh737z1g7dmx3mypkdwpdnscyhr6"))))
     (build-system python-build-system)
     (propagated-inputs
      `(("python-numpy" ,python-numpy)
@@ -4184,9 +4184,19 @@ routines such as routines for numerical integration and optimization.")
     (properties `((python2-variant . ,(delay python2-scipy))))
     (license license:bsd-3)))
 
+;; Version 1.2.2 is the last version to support Python 2
 (define-public python2-scipy
-  (package-with-python2
-   (strip-python2-variant python-scipy)))
+  (package
+    (inherit (package-with-python2
+              (strip-python2-variant python-scipy)))
+    (version "1.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "scipy" version))
+       (sha256
+        (base32
+         "1cgvgin8fvckv96hjh3ikmwkra5rif51bdb75ifzf7xbil5iwcx4"))))))
 
 (define-public python-socksipy-branch
   (package
@@ -14676,14 +14686,13 @@ working with iterables.")
 (define-public python-pybtex
   (package
     (name "python-pybtex")
-    (version "0.21")
+    (version "0.22.2")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "pybtex" version))
        (sha256
-        (base32
-         "00300j8dn5pxq4ndxmfmbmycg2znawkqs49val2x6jlmfiy6r2mg"))))
+        (base32 "070wfcmxrd7xg1si421mi9150gmx2qwx431nwf69sq3hhmgnx080"))))
     (build-system python-build-system)
     (native-inputs
      `(("python-nose" ,python-nose)))
diff --git a/gnu/packages/qt.scm b/gnu/packages/qt.scm
index 2104e684f4..768c4e5d89 100644
--- a/gnu/packages/qt.scm
+++ b/gnu/packages/qt.scm
@@ -2219,6 +2219,12 @@ time Web content can be enhanced with native controls.")
     ;; Building QtWebKit takes around 13 hours on an AArch64 machine.  Give some
     ;; room for slower or busy hardware.
     (properties '((timeout . 64800)))   ;18 hours
+
+    ;; XXX: This consumes too much RAM to successfully build on AArch64 (e.g.,
+    ;; SoftIron OverDrive with 8 GiB of RAM), so instead of wasting resources,
+    ;; disable it on non-Intel platforms.
+    (supported-systems '("x86_64-linux" "i686-linux"))
+
     (license license:lgpl2.1+)))
 
 (define-public dotherside
diff --git a/gnu/packages/rust.scm b/gnu/packages/rust.scm
index 7237f4cd4b..f3fee4c126 100644
--- a/gnu/packages/rust.scm
+++ b/gnu/packages/rust.scm
@@ -1070,7 +1070,7 @@ jemalloc = \"" jemalloc "/lib/libjemalloc_pic.a" "\"
                    (("bins::check") "//bins::check"))
                  #t)))))))))
 
-(define-public rust
+(define-public rust-1.36
   (let ((base-rust
          (rust-bootstrapped-package rust-1.35 "1.36.0"
            "06xv2p6zq03lidr0yaf029ii8wnjjqa894nkmrm6s0rx47by9i04")))
@@ -1081,3 +1081,20 @@ jemalloc = \"" jemalloc "/lib/libjemalloc_pic.a" "\"
          ((#:phases phases)
           `(modify-phases ,phases
              (delete 'patch-process-docs-rev-cmd))))))))
+
+(define-public rust
+  (let ((base-rust
+         (rust-bootstrapped-package rust-1.36 "1.37.0"
+           "1hrqprybhkhs6d9b5pjskfnc5z9v2l2gync7nb39qjb5s0h703hj")))
+    (package
+      (inherit base-rust)
+      (arguments
+       (substitute-keyword-arguments (package-arguments base-rust)
+         ((#:phases phases)
+          `(modify-phases ,phases
+             (add-before 'configure 'configure-cargo-home
+               (lambda _
+                 (let ((cargo-home (string-append (getcwd) "/.cargo")))
+                   (mkdir-p cargo-home)
+                   (setenv "CARGO_HOME" cargo-home)
+                   #t))))))))))
diff --git a/gnu/packages/samba.scm b/gnu/packages/samba.scm
index 33505aa5c7..45d700ec37 100644
--- a/gnu/packages/samba.scm
+++ b/gnu/packages/samba.scm
@@ -154,14 +154,14 @@ anywhere.")
 (define-public samba
   (package
     (name "samba")
-    (version "4.10.6")
+    (version "4.10.8")
     (source (origin
              (method url-fetch)
              (uri (string-append "https://download.samba.org/pub/samba/stable/"
                                  "samba-" version ".tar.gz"))
              (sha256
               (base32
-               "0hpgdqlyczj98pkh2ldglvvnkrb1q541r3qikdvxq0qjvd9fpywy"))))
+               "1x0hlhb674fndfkmimjicnzs543n3i8465a5ifcmjwvzavxha7y4"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases
@@ -245,14 +245,14 @@ Desktops into Active Directory environments using the winbind daemon.")
 (define-public talloc
   (package
     (name "talloc")
-    (version "2.2.0")
+    (version "2.3.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://www.samba.org/ftp/talloc/talloc-"
                                   version ".tar.gz"))
               (sha256
                (base32
-                "1g1fqa37xkjp9lp6lrwxrbfgashcink769ll505zvcwnxx2nlvsw"))))
+                "1iigk4a7n9k9qqq0h3a5vah67ycpqzvahvdhzy15lm428jrvrmbm"))))
     (build-system gnu-build-system)
     (arguments
      '(#:phases
@@ -312,14 +312,14 @@ destructors.  It is the core memory allocator used in Samba.")
 (define-public tevent
   (package
     (name "tevent")
-    (version "0.10.0")
+    (version "0.10.1")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://www.samba.org/ftp/tevent/tevent-"
                                   version ".tar.gz"))
               (sha256
                (base32
-                "1rm4d9245ya15wyrh9vqn1dnz14l2ic88mr46ykyc6kdrl99dwrk"))))
+                "1dhhd7fz6wyvlwrk1a6gj5m2mcjsc3ilx0mcv1qsr1lbndldm93r"))))
     (build-system gnu-build-system)
     (arguments
      '(#:phases
diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index cdd0caec4a..143df3e63e 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -53,7 +53,7 @@
   #:use-module (gnu packages gtk)
   #:use-module (gnu packages gettext)
   #:use-module (gnu packages glib)
-  #:use-module (gnu packages haskell)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages icu4c)
   #:use-module (gnu packages image)
   #:use-module (gnu packages java)
@@ -1828,13 +1828,13 @@ and density estimation.")
 (define-public r-chron
   (package
     (name "r-chron")
-    (version "2.3-53")
+    (version "2.3-54")
     (source (origin
               (method url-fetch)
               (uri (cran-uri "chron" version))
               (sha256
                (base32
-                "02bkywwsxwrxc035hv51dxgdm1fjxdm7dn19ivifln59dfs1862j"))))
+                "0vc7dxqwx0jqzwszax6di3091npsxnhnbvr7sy7rlip0jqzarwqd"))))
     (build-system r-build-system)
     (home-page "https://cran.r-project.org/web/packages/chron")
     (synopsis "Chronological R objects which can handle dates and times")
@@ -2097,13 +2097,13 @@ previous R versions and their release dates.")
 (define-public r-whisker
   (package
     (name "r-whisker")
-    (version "0.3-2")
+    (version "0.4")
     (source (origin
               (method url-fetch)
               (uri (cran-uri "whisker" version))
               (sha256
                (base32
-                "0z4cn115gxcl086d6bnqr8afi67b6a7xqg6ivmk3l4ng1x8kcj28"))))
+                "1a7vz0dk95xfjvi38wbpw8vmf5qn3g8p490msz2rw0piwidmk1ks"))))
     (build-system r-build-system)
     (home-page "https://github.com/edwindj/whisker")
     (synopsis "Logicless mustache templating for R")
@@ -2490,14 +2490,14 @@ were originally a part of the r-devtools package.")
 (define-public r-hms
   (package
     (name "r-hms")
-    (version "0.5.0")
+    (version "0.5.1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "hms" version))
        (sha256
         (base32
-         "06snfqdczr0x0nbp7qnvwhlp2pw0wx9c2y3xb4gr1wrvbik74y58"))))
+         "1v4cxfpvp85la4gqla6b4q2bwx4jv1fxqwndcnjsibbnybz6wcvd"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-rlang" ,r-rlang)
@@ -2696,14 +2696,14 @@ certain criterion, e.g., it contains a certain regular file.")
 (define-public r-rmarkdown
   (package
     (name "r-rmarkdown")
-    (version "1.14")
+    (version "1.15")
     (source
       (origin
         (method url-fetch)
         (uri (cran-uri "rmarkdown" version))
         (sha256
           (base32
-            "0qfw5rkvwqpgix32g6qy9xrr50awmm146aqbm836xravih2b2dpn"))))
+            "0fkfzxkvakc6bb1s2lx7sxmnfff8q1m9isihynhiyqh4x8yikcmw"))))
     (properties `((upstream-name . "rmarkdown")))
     (build-system r-build-system)
     (propagated-inputs
@@ -5028,14 +5028,14 @@ VGLMs can be loosely thought of as multivariate generalised linear models.")
 (define-public r-pbapply
   (package
     (name "r-pbapply")
-    (version "1.4-1")
+    (version "1.4-2")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "pbapply" version))
        (sha256
         (base32
-         "1bbws9n90cqnnp5k58hp852jwmm6513jnhn4vzhl9f8x314k6qxk"))))
+         "1xmk4p006v8gij26rs6kp5prjyf2n32nqjxiyp8a6kvgyc4z46dc"))))
     (build-system r-build-system)
     (home-page "https://github.com/psolymos/pbapply")
     (synopsis "Adding progress bar to apply functions")
diff --git a/gnu/packages/sync.scm b/gnu/packages/sync.scm
index ccebe40e9d..e281f43554 100644
--- a/gnu/packages/sync.scm
+++ b/gnu/packages/sync.scm
@@ -264,19 +264,19 @@ over the Internet in an HTTP and CDN friendly way;
 (define-public rclone
   (package
     (name "rclone")
-    (version "1.48.0")
+    (version "1.49.1")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "https://github.com/ncw/rclone/releases/download/v"
-                           version "/rclone-v" version ".tar.gz"))
+       (uri (string-append "https://github.com/rclone/rclone/releases/download/"
+                           "v" version "/rclone-v" version ".tar.gz"))
        (sha256
-        (base32 "1r03rlsk0qpya1fl8xfhj5inccjywf2cqgkd8r6wfhf3w2qd1zlc"))))
+        (base32 "1d0qvj7fn5bx3zqlf6hzn1922nrmy4x341n760m1b6h9az32mc5x"))))
     ;; FIXME: Rclone bundles some libraries Guix already provides.  Need to
     ;; un-bundle them.
     (build-system go-build-system)
     (arguments
-     '(#:import-path "github.com/ncw/rclone"
+     '(#:import-path "github.com/rclone/rclone"
        #:install-source? #f))
     (synopsis "@code{rsync} for cloud storage")
     (description "@code{Rclone} is a command line program to sync files and
diff --git a/gnu/packages/syncthing.scm b/gnu/packages/syncthing.scm
index 0f81b8804a..74457f6ec4 100644
--- a/gnu/packages/syncthing.scm
+++ b/gnu/packages/syncthing.scm
@@ -30,7 +30,7 @@
 (define-public syncthing
   (package
     (name "syncthing")
-    (version "1.2.1")
+    (version "1.2.2")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://github.com/syncthing/syncthing"
@@ -38,7 +38,7 @@
                                   "/syncthing-source-v" version ".tar.gz"))
               (sha256
                (base32
-                "1b6fidpkwfa2bm6hlv4p0bzxa1ha6s88vajczhryhqi5vjfxafri"))
+                "1wdjh8xw09s1nfkpc95v04619gqa4dpbygp2y5l35ww4g916lv3s"))
               (modules '((guix build utils)))
               ;; Delete bundled ("vendored") free software source code.
               (snippet '(begin
@@ -55,7 +55,6 @@
      `(("go-github-com-audriusbutkevicius-go-nat-pmp"
         ,go-github-com-audriusbutkevicius-go-nat-pmp)
        ("go-github-com-bkaradzic-go-lz4" ,go-github-com-bkaradzic-go-lz4)
-       ("go-github-com-calmh-du" ,go-github-com-calmh-du)
        ("go-github-com-calmh-xdr" ,go-github-com-calmh-xdr)
        ("go-github-com-chmduquesne-rollinghash"
         ,go-github-com-chmduquesne-rollinghash)
@@ -84,6 +83,7 @@
         ,go-github-com-gogo-protobuf-protoc-gen-gogo)
        ("go-github-com-prometheus-client-golang-prometheus"
         ,go-github-com-prometheus-client-golang-prometheus)
+       ("go-github-com-shirou-gopsutil" ,go-github-com-shirou-gopsutil)
        ("go-golang-org-x-net-bpf" ,go-golang-org-x-net-bpf)
        ("go-golang-org-x-net-internal-iana" ,go-golang-org-x-net-internal-iana)
        ("go-golang-org-x-net-internal-socket"
diff --git a/gnu/packages/telephony.scm b/gnu/packages/telephony.scm
index cf37756503..41896f2eb6 100644
--- a/gnu/packages/telephony.scm
+++ b/gnu/packages/telephony.scm
@@ -491,28 +491,24 @@ Mumble consists of two applications for separate usage:
                    license:bsd-2))))
 
 (define-public twinkle
-  (let ((commit "02e1d1538af3337134bd7381dcd95f8d7775b30f")
-        (revision "1"))
   (package
-   (name "twinkle")
-   (version (git-version "1.10.1" revision commit))
-   (source (origin
-             (method git-fetch)
-             (uri (git-reference
-                   (url "https://github.com/LubosD/twinkle")
-                   (commit commit)))
-             (patches
-              (search-patches "twinkle-include-qregexpvalidator.patch"))
-             (file-name (git-file-name name version))
-             (sha256
-              (base32
-               "0ds4rp4vr1wagn4m4m7ldqbsx5vgmgbfcqqgyhn1wf6s1dm0020z"))))
-   (build-system cmake-build-system)
-   (arguments
-    `(#:tests? #f ; no test target
-      #:configure-flags '("-DWITH_SPEEX=On")
-      #:phases
-      (modify-phases %standard-phases
+    (name "twinkle")
+    (version "1.10.2")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/LubosD/twinkle")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0s0gi03xwvzp02ah4q6j33r9jx9nbayr6dxlg2ck9pwbay1nq1hx"))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:tests? #f                                ; no test target
+       #:configure-flags '("-DWITH_SPEEX=On")
+       #:phases
+       (modify-phases %standard-phases
          (add-after 'install 'wrap-executable
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (let ((out (assoc-ref outputs "out")))
@@ -528,30 +524,30 @@ Mumble consists of two applications for separate usage:
                                           "/lib/qt5/qml"))
                          '("qtdeclarative" "qtquickcontrols"))))
                #t))))))
-   (native-inputs
-    `(("bison" ,bison)
-      ("flex" ,flex)
-      ("readline" ,readline)
-      ("file" ,file)
-      ("ucommon" ,ucommon)
-      ("ccrtp" ,ccrtp)
-      ("libxml2" ,libxml2)
-      ("speex" ,speex)
-      ("speexdsp" ,speexdsp)
-      ("libsndfile" ,libsndfile)
-      ("alsa-lib" ,alsa-lib)
-      ("qttools" ,qttools)))
-   (inputs
-    `(("qtbase" ,qtbase)
-      ("qtdeclarative" ,qtdeclarative)
-      ("qtquickcontrols" ,qtquickcontrols)))
-   (home-page "http://twinkle.dolezel.info/")
-   (synopsis "Softphone for voice over IP and instant messaging")
-   (description "Twinkle is a softphone for your voice over IP and instant
+    (native-inputs
+     `(("bison" ,bison)
+       ("flex" ,flex)
+       ("readline" ,readline)
+       ("file" ,file)
+       ("ucommon" ,ucommon)
+       ("ccrtp" ,ccrtp)
+       ("libxml2" ,libxml2)
+       ("speex" ,speex)
+       ("speexdsp" ,speexdsp)
+       ("libsndfile" ,libsndfile)
+       ("alsa-lib" ,alsa-lib)
+       ("qttools" ,qttools)))
+    (inputs
+     `(("qtbase" ,qtbase)
+       ("qtdeclarative" ,qtdeclarative)
+       ("qtquickcontrols" ,qtquickcontrols)))
+    (home-page "http://twinkle.dolezel.info/")
+    (synopsis "Softphone for voice over IP and instant messaging")
+    (description "Twinkle is a softphone for your voice over IP and instant
 messaging communcations using the SIP protocol.  You can use it for direct IP
 phone to IP phone communication or in a network using a SIP proxy to route your
 calls and messages")
-   (license license:gpl2+))))
+    (license license:gpl2+)))
 
 (define-public pjproject
   (package
diff --git a/gnu/packages/terminals.scm b/gnu/packages/terminals.scm
index bca8b14dad..f0117eead3 100644
--- a/gnu/packages/terminals.scm
+++ b/gnu/packages/terminals.scm
@@ -955,7 +955,7 @@ tmux.")
 (define-public kitty
   (package
     (name "kitty")
-    (version "0.14.3")
+    (version "0.14.4")
     (home-page "https://sw.kovidgoyal.net/kitty/")
     (source
      (origin
@@ -966,7 +966,7 @@ tmux.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "0wi6b6b1nyp16rcpcghk6by62wy6qsamv1xdymyn0zbqgd8h9n6b"))
+         "0z0y80wcbra3zfyaiim98afbqlfpkjkql430zfb8shx61rzzmn9i"))
        (modules '((guix build utils)))
        (snippet
         '(begin
diff --git a/gnu/packages/tex.scm b/gnu/packages/tex.scm
index 7cb9dd033d..28459917c8 100644
--- a/gnu/packages/tex.scm
+++ b/gnu/packages/tex.scm
@@ -2885,30 +2885,45 @@ documents.  It comprises the packages color, graphics, graphicx, trig, epsfig,
 keyval, and lscape.")
     (license license:lppl1.3c+)))
 
-(define-public texlive-latex-xcolor
-  (package
-    (name "texlive-latex-xcolor")
-    (version (number->string %texlive-revision))
-    (source (origin
-              (method svn-fetch)
-              (uri (texlive-ref "latex" "xcolor"))
-              (file-name (string-append name "-" version "-checkout"))
-              (sha256
-               (base32
-                "01n613s7bcrd2n4jfawm0k4nn2ny3aaifp2jjfif3lz4sbv31494"))))
-    (build-system texlive-build-system)
-    (arguments '(#:tex-directory "latex/xcolor"))
-    (home-page "https://www.ctan.org/pkg/xcolor")
-    (synopsis "Driver-independent color extensions for LaTeX and pdfLaTeX")
-    (description
-     "The package starts from the basic facilities of the colorcolor package,
+(define-public texlive-xcolor
+  (let ((template (simple-texlive-package
+                   "texlive-xcolor"
+                   (list "/doc/latex/xcolor/"
+                         "/source/latex/xcolor/")
+                   (base32
+                    "12q6spmpxg30alhvarjmxzigmz7lazapbrb0mc4vhbn6n1sdz7pp"))))
+    (package
+      (inherit template)
+      (arguments
+       (substitute-keyword-arguments (package-arguments template)
+         ((#:tex-directory _ #t)
+          "latex/xcolor")
+         ((#:phases phases)
+          `(modify-phases ,phases
+             (add-after 'unpack 'chdir
+               (lambda _ (chdir "source/latex/xcolor") #t))
+             (add-after 'install 'move-files
+               (lambda* (#:key outputs #:allow-other-keys)
+                 (let ((share (string-append (assoc-ref outputs "out")
+                                             "/share/texmf-dist")))
+                   (mkdir-p (string-append share "/dvips/xcolor"))
+                   (rename-file (string-append share "/tex/latex/xcolor/xcolor.pro")
+                                (string-append share "/dvips/xcolor/xcolor.pro"))
+                   #t)))))))
+      (home-page "https://www.ctan.org/pkg/xcolor")
+      (synopsis "Driver-independent color extensions for LaTeX and pdfLaTeX")
+      (description
+       "The package starts from the basic facilities of the colorcolor package,
 and provides easy driver-independent access to several kinds of color tints,
 shades, tones, and mixes of arbitrary colors.  It allows a user to select a
 document-wide target color model and offers complete tools for conversion
 between eight color models.  Additionally, there is a command for alternating
 row colors plus repeated non-aligned material (like horizontal lines) in
 tables.")
-    (license license:lppl1.2+)))
+      (license license:lppl1.2+))))
+
+(define-public texlive-latex-xcolor
+  (deprecated-package "texlive-latex-xcolor" texlive-xcolor))
 
 (define-public texlive-latex-hyperref
   (package
@@ -3969,31 +3984,6 @@ with a user specified LaTeX construction, properly aligned, scaled, and/or
 rotated.")
     (license (license:fsf-free "file://psfrag.dtx"))))
 
-(define-public texlive-latex-xkeyval
-  (package
-    (name "texlive-latex-xkeyval")
-    (version (number->string %texlive-revision))
-    (source (origin
-              (method svn-fetch)
-              (uri (texlive-ref "latex" "xkeyval"))
-              (file-name (string-append name "-" version "-checkout"))
-              (sha256
-               (base32
-                "0wancavix39j240pd8m9cgmwsijwx6jd6n54v8wg0x2rk5m44myp"))))
-    (build-system texlive-build-system)
-    (arguments '(#:tex-directory "latex/xkeyval"))
-    (home-page "https://www.ctan.org/pkg/xkeyval")
-    (synopsis "Macros for defining and setting keys")
-    (description
-     "This package is an extension of the @code{keyval} package and offers
-more flexible macros for defining and setting keys.  The package provides a
-pointer and a preset system.  Furthermore, it supplies macros to allow class
-and package options to contain options of the @code{key=value} form.  A LaTeX
-kernel patch is provided to avoid premature expansions of macros in class or
-package options.  A specialized system for setting @code{PSTricks} keys is
-provided by the @code{pst-xkey} package.")
-    (license license:lppl1.3+)))
-
 (define-public texlive-pstool
   (package
     (inherit (simple-texlive-package
@@ -5454,7 +5444,7 @@ TeX metrics (VF and TFM files) and macros for use with LaTeX.")
 as an alternative version of the Kurier typeface, which was designed in 1975
 for a diploma in typeface design at the Warsaw Academy of Fine Arts under the
 supervision of Roman Tomaszewski.  Kurier was designed for linotype
-typesetting of newspapers and similar periodicals. The Iwona fonts are an
+typesetting of newspapers and similar periodicals.  The Iwona fonts are an
 alternative version of the Kurier fonts.  The difference lies in the absence
 of ink traps which typify the Kurier font.")
     (license license:gfl1.0)))
@@ -7063,3 +7053,319 @@ the file to which it applies.")
      "This package helps LaTeX users to create PDF/X, PFD/A and other
 standards-compliant PDF documents with pdfTeX, LuaTeX and XeTeX.")
     (license license:lppl1.2+)))
+
+(define-public texlive-ydoc
+  (let ((template (simple-texlive-package
+                   "texlive-ydoc"
+                   (list "/doc/latex/ydoc/"
+                         "/source/latex/ydoc/")
+                   (base32
+                    "0ckcpy1b8v1fk3qc8qkxgiag2wc0qzxm6bgksv000m4m1hsi2g8b")
+                   #:trivial? #f)))
+    (package
+      (inherit template)
+      (outputs '("out" "doc"))
+      (arguments
+       (substitute-keyword-arguments (package-arguments template)
+         ((#:tex-directory _ #t)
+          "latex/ydoc")
+         ((#:build-targets _ #t)
+          ''("ydoc.dtx"))
+         ((#:phases phases)
+          `(modify-phases ,phases
+             (add-after 'unpack 'chdir
+               (lambda _ (chdir "source/latex/ydoc") #t))
+             (add-after 'copy-files 'move-files
+               (lambda* (#:key outputs #:allow-other-keys)
+                 (let* ((share (string-append (assoc-ref outputs "out")
+                                              "/share/texmf-dist"))
+                        (target (string-append share "/tex/generic/ydoc"))
+                        (doc (string-append (assoc-ref outputs "doc")
+                                            "/share/texmf-dist/doc") ))
+                   (mkdir-p target)
+                   (for-each
+                    (lambda (file)
+                      (rename-file (string-append share "/tex/latex/ydoc/" file)
+                                   (string-append target "/" file)))
+                    '("ydocincl.tex" "ydocstrip.tex"))
+                   (mkdir-p doc)
+                   (rename-file (string-append share "/doc") doc)
+                   #t)))))))
+      (home-page "http://www.ctan.org/pkg/ydoc")
+      (synopsis "Macros for documentation of LaTeX classes and packages")
+      (description "The package provides macros and environments to document
+LaTeX packages and classes.  It is an (as yet unfinished) alternative to the
+@code{ltxdoc} class and the @code{doc} or @code{xdoc} packages.  The aim is to
+provide a different layout and more modern styles (using the @code{xcolor},
+@code{hyperref} packages, etc.)  This is an alpha release, and should probably
+not (yet) be used with other packages, since the implementation might
+change.")
+      (license license:lppl1.3+))))
+
+(define-public texlive-pstricks
+  (let ((template (simple-texlive-package
+                   "texlive-pstricks"
+                   (list "/doc/generic/pstricks/"
+                         "/dvips/pstricks/"
+                         "/tex/generic/pstricks/"
+                         "/tex/latex/pstricks/")
+                   (base32
+                    "04566354c77claxl1sznc490cda0m5gaa5ck6ms4q7mm44rj3rzk")
+                   #:trivial? #t)))
+    (package
+      (inherit template)
+      (arguments
+       (substitute-keyword-arguments (package-arguments template)
+         ((#:phases phases)
+          `(modify-phases ,phases
+             (delete 'reset-gzip-timestamps)))))
+      (home-page "http://www.ctan.org/pkg/pstricks")
+      (synopsis "PostScript macros for TeX")
+      (description "PSTricks offers an extensive collection of macros for
+generating PostScript that is usable with most TeX macro formats, including
+Plain TeX, LaTeX, AMS-TeX, and AMS-LaTeX.  Included are macros for colour,
+graphics, pie charts, rotation, trees and overlays.  It has many special
+features, including a wide variety of graphics (picture drawing) macros, with
+a flexible interface and with colour support.  There are macros for colouring
+or shading the cells of tables.")
+      (license license:lppl1.3+))))
+
+(define-public texlive-pst-text
+  (let ((template (simple-texlive-package
+                   "texlive-pst-text"
+                   (list "/doc/generic/pst-text/"
+                         "/source/generic/pst-text/Makefile"
+                         "/dvips/pst-text/pst-text.pro"
+                         "/tex/generic/pst-text/"
+                         "/tex/latex/pst-text/")
+                   (base32
+                    "0s2bbkdfy0shqrrkjflrn0x0pnvxzbdc38pjbdfw46wnmnxrnasm")
+                   #:trivial? #t)))
+    (package
+      (inherit template)
+      (propagated-inputs
+       `(("texlive-pstricks" ,texlive-pstricks)))
+      (home-page "http://www.ctan.org/pkg/pst-text")
+      (synopsis "Text and character manipulation in PSTricks")
+      (description "Pst-text is a PSTricks based package for plotting text along
+a different path and manipulating characters.  It includes the functionality
+of the old package @code{pst-char}.")
+      (license license:lppl))))
+
+(define-public texlive-iftex
+  (let ((template (simple-texlive-package
+                   "texlive-iftex"
+                   (list "/doc/generic/iftex/"
+                         "/tex/generic/iftex/iftex.sty")
+                   (base32
+                    "089zvw31gby150n1k0zdk2c0q97pgbqs46phxydaqil64b55nnl7")
+                   #:trivial? #t)))
+    (package
+      (inherit template)
+      (home-page "http://www.ctan.org/pkg/iftex")
+      (synopsis "Determine the currently used TeX engine")
+      (description "This package, which works both for Plain TeX and for
+LaTeX, defines the @code{\\ifPDFTeX}, @code{\\ifXeTeX}, and @code{\\ifLuaTeX}
+conditionals for testing which engine is being used for typesetting.  The
+package also provides the @code{\\RequirePDFTeX}, @code{\\RequireXeTeX}, and
+@code{\\RequireLuaTeX} commands which throw an error if pdfTeX, XeTeX or
+LuaTeX (respectively) is not the engine in use.")
+      (license license:lppl1.3+))))
+
+(define-public texlive-tools
+  (let ((template (simple-texlive-package
+                   "texlive-tools"
+                   (list "/doc/latex/tools/"
+                         "/source/latex/tools/")
+                   (base32
+                    "0v3zqcpy0w5bzy1xdcv1wnxbmxrn1j6x03h3y2af7qmjggph2a09"))))
+    (package
+      (inherit template)
+      (arguments
+       (substitute-keyword-arguments (package-arguments template)
+         ((#:tex-directory _ '())
+          "latex/tools")
+         ((#:build-targets _ '())
+          ''("tools.ins"))
+         ((#:phases phases)
+          `(modify-phases ,phases
+             (add-after 'unpack 'chdir
+               (lambda _ (chdir "source/latex/tools") #t))))))
+      (home-page "https://www.ctan.org/tex-archive/macros/latex/required/tools/")
+      (synopsis "LaTeX standard tools bundle")
+      (description "This package provides a collection of simple tools that
+are part of the LaTeX required tools distribution, comprising the packages:
+@code{afterpage}, @code{array}, @code{bm}, @code{calc}, @code{dcolumn},
+@code{delarray}, @code{enumerate}, @code{fileerr}, @code{fontsmpl},
+@code{ftnright}, @code{hhline}, @code{indentfirst}, @code{layout},
+@code{longtable}, @code{multicol}, @code{rawfonts}, @code{showkeys},
+@code{somedefs}, @code{tabularx}, @code{theorem}, @code{trace},
+@code{varioref}, @code{verbatim}, @code{xr}, and @code{xspace}.")
+      (license license:lppl1.3+))))
+
+(define-public texlive-latex-xkeyval
+  (package
+    (name "texlive-latex-xkeyval")
+    (version (number->string %texlive-revision))
+    (source (origin
+              (method svn-fetch)
+              (uri (texlive-ref "latex" "xkeyval"))
+              (sha256
+               (base32
+                "0wancavix39j240pd8m9cgmwsijwx6jd6n54v8wg0x2rk5m44myp"))))
+    (build-system texlive-build-system)
+    (arguments
+     '(#:tex-directory "latex/xkeyval"
+       #:build-targets '("xkeyval.dtx")
+       #:tex-format "latex" ; won't build with luatex
+       #:phases
+       (modify-phases %standard-phases
+         ;; This package cannot be built out of tree as it expects to find
+         ;; built files in the working directory.
+         (add-before 'build 'fix-build
+           (lambda _
+             (setenv "TEXINPUTS"
+                     (string-append (getcwd) "/build:"))
+             (substitute* "xkeyval.dtx"
+               (("usepackage\\{xcolor\\}")
+                "usepackage[dvips]{xcolor}"))
+             #t))
+         ;; FIXME: We don't have a package for this font yet.
+         (add-after 'unpack 'remove-dependency-on-fourier
+           (lambda _
+             (substitute* "xkeyval.dtx"
+               (("\\\\usepackage\\{fourier\\}") ""))
+             #t))
+         (add-after 'install 'move-files
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (share (string-append out "/share/texmf-dist"))
+                    (source (string-append share "/tex/latex/xkeyval/"))
+                    (target (string-append share "/tex/generic/xkeyval/")))
+               (mkdir-p target)
+               (for-each (lambda (file)
+                           (rename-file (string-append source file)
+                                        (string-append target file)))
+                         '("keyval.tex"
+                           "pst-xkey.tex"
+                           "xkeyval.tex"
+                           "xkvex1.tex"
+                           "xkvex2.tex"
+                           "xkvex3.tex"
+                           "xkvex4.tex"
+                           "xkvtxhdr.tex"
+                           "xkvutils.tex"))
+               #t))))))
+    (native-inputs
+     `(("texlive-latex-base" ,texlive-latex-base)
+       ("texlive-cm" ,texlive-cm)
+       ("texlive-lm" ,texlive-lm)
+       ("texlive-url" ,texlive-url)
+       ("texlive-graphics-def" ,texlive-graphics-def)
+       ("texlive-xcolor" ,texlive-xcolor)
+       ("texlive-latex-footmisc" ,texlive-latex-footmisc)
+       ("texlive-latex-listings" ,texlive-latex-listings)
+       ("texlive-iftex" ,texlive-iftex)
+       ("texlive-pstricks" ,texlive-pstricks)
+       ("texlive-pst-text" ,texlive-pst-text)
+       ("texlive-tools" ,texlive-tools)
+       ("texlive-latex-pgf" ,texlive-latex-pgf)))
+    (home-page "http://www.ctan.org/pkg/xkeyval")
+    (synopsis "Extension of the keyval package")
+    (description
+     "This package is an extension of the keyval package and offers additional
+macros for setting keys and declaring and setting class or package options.
+The package allows the programmer to specify a prefix to the name of the
+macros it defines for keys, and to define families of key definitions; these
+all help use in documents where several packages define their own sets of
+keys.")
+    (license license:lppl1.3+)))
+
+(define-public texlive-standalone
+  (package
+    (name "texlive-standalone")
+    (version (number->string %texlive-revision))
+    (source
+     (origin
+       (method svn-fetch)
+       (uri (texlive-ref "latex" "standalone"))
+       (sha256
+        (base32
+         "192ydxcn8ir96q8qwvnppksmqf5i0p50i0wz6iqazbwmh3dqxpx4"))))
+    (build-system texlive-build-system)
+    (arguments '(#:tex-directory "latex/standalone"))
+    (propagated-inputs
+     `(("texlive-latex-xkeyval" ,texlive-latex-xkeyval)))
+    (native-inputs
+     `(("texlive-ydoc" ,texlive-ydoc)))
+    (home-page "http://www.ctan.org/pkg/standalone")
+    (synopsis "Compile TeX pictures stand-alone or as part of a document")
+    (description "A class and package is provided which allows TeX pictures or
+other TeX code to be compiled standalone or as part of a main document.
+Special support for pictures with beamer overlays is also provided.  The
+package is used in the main document and skips extra preambles in sub-files.
+The class may be used to simplify the preamble in sub-files.  By default the
+@code{preview} package is used to display the typeset code without margins.
+The behaviour in standalone mode may adjusted using a configuration file
+@code{standalone.cfg} to redefine the standalone environment.")
+    (license license:lppl1.3+)))
+
+(define-public texlive-siunitx
+  (package
+    (name "texlive-siunitx")
+    (version (number->string %texlive-revision))
+    (source (texlive-origin
+             name version
+             (list "/source/latex/siunitx/siunitx.dtx"
+                   "/doc/latex/siunitx/README.md")
+             (base32
+              "0dmljnxgv2bwl3mi74iil41q03swvrm1b0ziwxlhc4m9lx31b1q1")))
+    (build-system texlive-build-system)
+    (arguments
+     '(#:tex-directory "latex/siunitx"
+       #:build-targets '("siunitx.dtx")
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'chdir
+           (lambda _ (chdir "source/latex/siunitx") #t)))))
+    (propagated-inputs
+     `(("texlive-latex-l3kernel" ,texlive-latex-l3kernel)
+       ("texlive-latex-l3packages" ,texlive-latex-l3packages)))
+    (home-page "http://www.ctan.org/pkg/siunitx")
+    (synopsis "Comprehensive SI units package")
+    (description
+     "Typesetting values with units requires care to ensure that the combined
+mathematical meaning of the value plus unit combination is clear.  In
+particular, the SI units system lays down a consistent set of units with rules
+on how they are to be used.  However, different countries and publishers have
+differing conventions on the exact appearance of numbers (and units).  A
+number of LaTeX packages have been developed to provide consistent application
+of the various rules.  The @code{siunitx} package takes the best from the
+existing packages, and adds new features and a consistent interface.  A number
+of new ideas have been incorporated, to fill gaps in the existing provision.
+The package also provides backward-compatibility with @code{SIunits},
+@code{sistyle}, @code{unitsdef} and @code{units}.  The aim is to have one
+package to handle all of the possible unit-related needs of LaTeX users.")
+    (license license:lppl1.3c)))
+
+(define-public texlive-booktabs
+  (package
+    (name "texlive-booktabs")
+    (version (number->string %texlive-revision))
+    (source
+     (origin
+       (method svn-fetch)
+       (uri (texlive-ref "latex" "booktabs"))
+       (sha256
+        (base32
+         "1dqid48vgh25wmw8xzmx6x3pfgz1y9f0r8aza1yxq2mjny5yf68x"))))
+    (build-system texlive-build-system)
+    (arguments '(#:tex-directory "latex/booktabs"))
+    (home-page "http://www.ctan.org/pkg/booktabs")
+    (synopsis "Publication quality tables in LaTeX")
+    (description
+     "This package enhances the quality of tables in LaTeX, providing extra
+commands as well as behind-the-scenes optimisation.  Guidelines are given as
+to what constitutes a good table in this context.  The package offers
+@code{longtable} compatibility.")
+    (license license:lppl1.3+)))
diff --git a/gnu/packages/textutils.scm b/gnu/packages/textutils.scm
index 330e10610d..388f164428 100644
--- a/gnu/packages/textutils.scm
+++ b/gnu/packages/textutils.scm
@@ -475,7 +475,7 @@ as existing hashing techniques, with provably negligible risk of collisions.")
 (define-public oniguruma
   (package
     (name "oniguruma")
-    (version "6.9.2")
+    (version "6.9.3")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://github.com/kkos/"
@@ -483,7 +483,7 @@ as existing hashing techniques, with provably negligible risk of collisions.")
                                   "/onig-" version ".tar.gz"))
               (sha256
                (base32
-                "0slp4hpw9qxk4xhn7abyw7065sd355xwkyfq72glxczcjsqxsynv"))))
+                "0pvj37r1rd5h5vw99mdk8z4k44gq1ldwrapkamdiicksdfkr4ndb"))))
     (build-system gnu-build-system)
     (home-page "https://github.com/kkos/oniguruma")
     (synopsis "Regular expression library")
@@ -492,20 +492,6 @@ characteristic of this library is that different character encoding for every
 regular expression object can be specified.")
     (license license:bsd-2)))
 
-;; PHP < 7.3.0 requires this old version.  Remove once no longer needed.
-(define-public oniguruma-5
-  (package
-    (inherit oniguruma)
-    (version "5.9.6")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://github.com/kkos/"
-                                  "oniguruma/releases/download/v" version
-                                  "/onig-" version ".tar.gz"))
-              (sha256
-               (base32
-                "19s79vsclqn170mw0ajwv7j37qsbn4f1yjz3yavnhvva6c820r6m"))))))
-
 (define-public antiword
   (package
     (name "antiword")
diff --git a/gnu/packages/upnp.scm b/gnu/packages/upnp.scm
index 36e14634f7..1c2479064a 100644
--- a/gnu/packages/upnp.scm
+++ b/gnu/packages/upnp.scm
@@ -42,14 +42,14 @@
 (define-public miniupnpc
   (package
     (name "miniupnpc")
-    (version "2.1.20190625")
+    (version "2.1.20190824")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "https://miniupnp.tuxfamily.org/files/"
                            name "-" version ".tar.gz"))
        (sha256
-        (base32 "1yqp0d8x5ldjfma5x2vhpg1aaafdg0470ismccixww3rzpbza8w7"))))
+        (base32 "0rg1i51lnyq8zgflhcg981kq4348vgq03ndmbgiv7knd1vmfzb8z"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("python" ,python-2)))
diff --git a/gnu/packages/vim.scm b/gnu/packages/vim.scm
index 1eede0b22a..8ebdbb9a35 100644
--- a/gnu/packages/vim.scm
+++ b/gnu/packages/vim.scm
@@ -483,7 +483,7 @@ trouble using them, because you do not have to remember each snippet name.")
 (define-public vim-fugitive
   (package
     (name "vim-fugitive")
-    (version "2.5")
+    (version "3.0")
     (source
       (origin
         (method git-fetch)
@@ -493,7 +493,7 @@ trouble using them, because you do not have to remember each snippet name.")
         (file-name (git-file-name name version))
         (sha256
          (base32
-          "17yz7gxn7a49jzndr4z5vnk1y4a6c22qss3mwxzmq4m46fni0k8q"))))
+          "0ghh8a9xysc3njqql1khhl2dkhymz93snpwqp2apm7pka6l893bc"))))
     (build-system gnu-build-system)
     (arguments
      '(#:tests? #f
@@ -506,13 +506,15 @@ trouble using them, because you do not have to remember each snippet name.")
              (let* ((out (assoc-ref outputs "out"))
                     (vimfiles (string-append out "/share/vim/vimfiles"))
                     (autoload (string-append vimfiles "/autoload"))
-                    (doc (string-append vimfiles "/doc"))
+                    (doc      (string-append vimfiles "/doc"))
                     (ftdetect (string-append vimfiles "/ftdetect"))
-                    (plugin (string-append vimfiles "/plugin")))
+                    (plugin   (string-append vimfiles "/plugin"))
+                    (syntax   (string-append vimfiles "/syntax")))
                (copy-recursively "autoload" autoload)
                (copy-recursively "doc" doc)
                (copy-recursively "ftdetect" ftdetect)
                (copy-recursively "plugin" plugin)
+               (copy-recursively "syntax" syntax)
                #t))))))
     (home-page "https://github.com/tpope/vim-fugitive")
     (synopsis "Vim plugin to work with Git")
diff --git a/gnu/packages/web-browsers.scm b/gnu/packages/web-browsers.scm
index 8fafe438d0..745b08f90b 100644
--- a/gnu/packages/web-browsers.scm
+++ b/gnu/packages/web-browsers.scm
@@ -368,16 +368,18 @@ driven and does not detract you from your daily work.")
 (define next-gtk-webkit
   (package
     (name "next-gtk-webkit")
-    (version "1.3.0")
+    (version "1.3.1")
     (source
      (origin
        (method git-fetch)
        (uri (git-reference
-             (url "https://source.atlas.engineer/public/next")
+             ;; TODO: Mirror seems to hang, let's fallback to GitHub for now.
+             ;; (url "https://source.atlas.engineer/public/next")
+             (url "https://github.com/atlas-engineer/next")
              (commit version)))
        (sha256
         (base32
-         "0ibq30xrf871pkpasi8p9krn0pmd86rsdzb3jqvz3wnp4wa3hl9d"))
+         "01fn1f080ydk0wj1bwkyakqz93bdq9xb5x8qz820jpl9id17bqgj"))
        (file-name (git-file-name "next" version))))
     (build-system glib-or-gtk-build-system)
     (arguments
@@ -413,7 +415,7 @@ features for productive professionals.")
     (arguments
      `(#:tests? #f                      ; Need online access.
        #:asd-file "next.asd"
-       #:asd-system-name "download-manager"))
+       #:asd-system-name "next/download-manager"))
     (inputs
      `(;; ASD libraries:
        ("trivial-features" ,sbcl-trivial-features)
@@ -501,8 +503,6 @@ features for productive professionals.")
          ("cl-markup" ,sbcl-cl-markup)
          ("cl-ppcre" ,sbcl-cl-ppcre)
          ("cl-ppcre-unicode" ,sbcl-cl-ppcre-unicode)
-         ("cl-string-match" ,sbcl-cl-string-match)
-         ("cl-strings" ,sbcl-cl-strings)
          ("closer-mop" ,sbcl-closer-mop)
          ("dbus" ,cl-dbus)
          ("dexador" ,sbcl-dexador)
diff --git a/gnu/packages/web.scm b/gnu/packages/web.scm
index 2008b8ee46..591ae2cb74 100644
--- a/gnu/packages/web.scm
+++ b/gnu/packages/web.scm
@@ -208,14 +208,14 @@ Interface} specification.")
     ;; ’stable’ and recommends that “in general you deploy the NGINX mainline
     ;; branch at all times” (https://www.nginx.com/blog/nginx-1-6-1-7-released/)
     ;; Consider updating the nginx-documentation package together with this one.
-    (version "1.17.2")
+    (version "1.17.3")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://nginx.org/download/nginx-"
                                   version ".tar.gz"))
               (sha256
                (base32
-                "1v39gslwbvpfhqqv74q0lkfrhrwsp59xc8pwhvxns7af8s3kccsy"))))
+                "0g0g9prwjy0rnv6n5smny5yl5dhnmflqdr3hwgyj5jpr5hfgx11v"))))
     (build-system gnu-build-system)
     (inputs `(("openssl" ,openssl)
               ("pcre" ,pcre)
@@ -4931,13 +4931,13 @@ deployments.")
   (package
     (name "varnish")
     (home-page "https://varnish-cache.org/")
-    (version "6.2.0")
+    (version "6.2.1")
     (source (origin
               (method url-fetch)
               (uri (string-append home-page "_downloads/varnish-" version ".tgz"))
               (sha256
                (base32
-                "0lwfk2gq99c653h5f51fs3j37r0gh2pf0p4w5z986nm2mi9z6yn3"))))
+                "15qfvw3fp05bgyspcm6gbsnxhs430p4z3fwz5kkd1z68jb90b3pj"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags (list (string-append "LDFLAGS=-Wl,-rpath=" %output "/lib")
diff --git a/gnu/packages/wine.scm b/gnu/packages/wine.scm
index 4cf1a3ac4b..3a5def50b1 100644
--- a/gnu/packages/wine.scm
+++ b/gnu/packages/wine.scm
@@ -318,7 +318,7 @@ integrate Windows applications into your desktop.")
 (define-public wine-staging-patchset-data
   (package
     (name "wine-staging-patchset-data")
-    (version "4.14")
+    (version "4.15")
     (source
      (origin
        (method git-fetch)
@@ -328,7 +328,7 @@ integrate Windows applications into your desktop.")
        (file-name (git-file-name name version))
        (sha256
         (base32
-         "1s17hcrp1aa0v99y5iav2s0lxdx2rzgm7z0c4zhxyydqxj399f5j"))))
+         "13g40h2ybcl6vab4zbl1ksqfqyly5hzxssza9dv8r5pmp8x54hgr"))))
     (build-system trivial-build-system)
     (native-inputs
      `(("bash" ,bash)
@@ -374,7 +374,7 @@ integrate Windows applications into your desktop.")
               (file-name (string-append name "-" version ".tar.xz"))
               (sha256
                (base32
-                "1rl1a3k5sr0hyxc61d68kwandhxcnxwv6b77vh7x2rkl1h4nxmfs"))))
+                "0bfh4vd99zwj7f4108zvs80dfvmmnnsap7i6gmf21jgcly3paygq"))))
     (inputs `(("autoconf" ,autoconf) ; for autoreconf
               ("faudio" ,faudio)
               ("ffmpeg" ,ffmpeg)
diff --git a/gnu/packages/wm.scm b/gnu/packages/wm.scm
index e644cc94cc..a4ae1c2dda 100644
--- a/gnu/packages/wm.scm
+++ b/gnu/packages/wm.scm
@@ -48,9 +48,9 @@
   #:use-module (guix build-system meson)
   #:use-module (guix build-system perl)
   #:use-module (guix build-system python)
-  #:use-module (gnu packages haskell)
   #:use-module (gnu packages haskell-check)
   #:use-module (gnu packages haskell-web)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages autotools)
   #:use-module (gnu packages bison)
   #:use-module (gnu packages gawk)
@@ -172,14 +172,14 @@ commands would.")
 (define-public i3-wm
   (package
     (name "i3-wm")
-    (version "4.17")
+    (version "4.17.1")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://i3wm.org/downloads/i3-"
                                   version ".tar.bz2"))
               (sha256
                (base32
-                "1z8qmkkq9dhqmqy8sjw3rnpnmnb8v7lr456bs0qzp23bgpj17gjf"))))
+                "0iazv2i2rgmakzh95pgj6iapyzn7bdpcbcd35a79mhlml4ry33qy"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags
@@ -1138,7 +1138,7 @@ functionality to display information about the most commonly used services.")
 (define-public wlroots
   (package
     (name "wlroots")
-    (version "0.6.0")
+    (version "0.7.0")
     (source
      (origin
        (method git-fetch)
@@ -1147,7 +1147,7 @@ functionality to display information about the most commonly used services.")
              (commit version)))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "1rdcmll5b8w242n6yfjpsaprq280ck2jmbz46dxndhignxgda7k4"))))
+        (base32 "0jzxa6psbc7ddxli7rbfqxmv1svxnis51l1vch4hb9fdixqm284a"))))
     (build-system meson-build-system)
     (arguments
      `(#:configure-flags '("-Dlogind-provider=elogind")
diff --git a/gnu/packages/xfce.scm b/gnu/packages/xfce.scm
index 93c36dac1e..0487c24b68 100644
--- a/gnu/packages/xfce.scm
+++ b/gnu/packages/xfce.scm
@@ -37,6 +37,7 @@
   #:use-module (guix build-system trivial)
   #:use-module (gnu artwork)
   #:use-module (gnu packages)
+  #:use-module (gnu packages base)
   #:use-module (gnu packages calendar)
   #:use-module (gnu packages cdrom)
   #:use-module (gnu packages pkg-config)
@@ -54,6 +55,7 @@
   #:use-module (gnu packages pdf)
   #:use-module (gnu packages polkit)
   #:use-module (gnu packages gstreamer)
+  #:use-module (gnu packages libcanberra)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages photo)
   #:use-module (gnu packages pcre)
@@ -86,7 +88,7 @@
 (define-public libxfce4util
   (package
     (name "libxfce4util")
-    (version "4.12.1")
+    (version "4.14.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "http://archive.xfce.org/xfce/"
@@ -94,11 +96,13 @@
                                   "/src/" name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "07c8r3xwx5is298zk77m3r784gmr5y4mh8bbca5zdjqk5vxdwsw7"))))
+                "093338faqqsrlc8dkmzr7qv411ysxczg1wlg7s3gvhrfk6vpkb9j"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
-       ("intltool" ,intltool)))
+       ("gobject-introspection" ,gobject-introspection)
+       ("intltool" ,intltool)
+       ("vala" ,vala)))
     (propagated-inputs `(("glib" ,glib))) ; required by libxfce4util-1.0.pc
     (home-page "https://www.xfce.org/")
     (synopsis "Basic utility library for Xfce")
@@ -110,7 +114,7 @@ Xfce Desktop Environment.")
 (define-public xfconf
   (package
     (name "xfconf")
-    (version "4.12.1")
+    (version "4.14.1")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/xfce/"
@@ -118,13 +122,13 @@ Xfce Desktop Environment.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "0dns190bwb615wy9ma2654sw4vz1d0rcv061zmaalkv9wmj8bx1m"))))
+                "0n8d55c98ff7wgwv3qa4g369sv4iasgm1w62zq10kq5f56iy14xq"))))
     (build-system gnu-build-system)
     (arguments
      '(#:phases
        ;; Run check after install phase to test dbus activation.
        (modify-phases %standard-phases
-         (add-after 'install 'check
+         (add-after 'install 'custom-check
            (lambda _
              (setenv "HOME" (getenv "TMPDIR")) ; xfconfd requires a writable HOME
              ;; Run test-suite under a dbus session.
@@ -136,12 +140,14 @@ Xfce Desktop Environment.")
          (delete 'check))))
     (native-inputs
      `(("pkg-config" ,pkg-config)
-       ("intltool" ,intltool)))
+       ("intltool" ,intltool)
+       ("glib:bin" ,glib "bin") ;; for gdbus-codegen
+       ("gobject-introspection" ,gobject-introspection)
+       ("vala" ,vala)
+       ("dbus" ,dbus)))
     (propagated-inputs
      ;; libxfconf-0.pc refers to all these.
-     `(("glib" ,glib)
-       ("dbus" ,dbus)
-       ("dbus-glib" ,dbus-glib)))
+     `(("glib" ,glib)))
     (inputs
      `(("libxfce4util" ,libxfce4util)))
     (home-page "https://www.xfce.org/")
@@ -154,7 +160,7 @@ storage system.")
 (define-public libxfce4ui
   (package
     (name "libxfce4ui")
-    (version "4.12.1")
+    (version "4.14.1")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/xfce/"
@@ -162,11 +168,15 @@ storage system.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "0hzzhiiwmqsrbv17nninhs2x1b8ck0ym85jck2xphx5ypw8rhq9x"))))
+                "1npjhznmnckhnylsv3l7p1zvhckhmp9d7vifs8w12kdfmrg0fjf4"))))
     (build-system gnu-build-system)
+    (arguments
+     `(#:configure-flags
+       (list "--with-vendor-info=GNU Guix")))
     (native-inputs
      `(("pkg-config" ,pkg-config)
-       ("intltool" ,intltool)))
+       ("intltool" ,intltool)
+       ("gobject-introspection" ,gobject-introspection)))
     (propagated-inputs
      `(("gtk+-3" ,gtk+)    ; required by libxfce4ui-2.pc
        ;; libxfce4kbd-private-2.pc refers to all these.
@@ -188,7 +198,7 @@ to share commonly used Xfce widgets among the Xfce applications.")
 (define-public exo
   (package
     (name "exo")
-    (version "0.12.6")
+    (version "0.12.8")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/xfce/"
@@ -196,17 +206,19 @@ to share commonly used Xfce widgets among the Xfce applications.")
                                   "exo-" version ".tar.bz2"))
               (sha256
                (base32
-                "00qh8ihrf09jvd26kilybihkgvv6rvi0l1bvlldxc99jb7ygy5ql"))))
+                "1ppwi6n40aphh0dqsnfrk234zsp7pl4lkjnspqjxw7m49bka401l"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
        ("intltool" ,intltool)))
     (propagated-inputs
-     ;; exo-1.pc refers to all these.
-     `(("gtk+" ,gtk+-2)
+     ;; exo-2.pc refers to all these.
+     `(("gtk+-3" ,gtk+)
        ("libxfce4util" ,libxfce4util)))
     (inputs
-     `(("libxfce4ui" ,libxfce4ui)
+     `(;; FIXME Refered to in exo-1.pc but conflict with gtk+-3
+       ("gtk+-2" ,gtk+-2)
+       ("libxfce4ui" ,libxfce4ui)
        ("perl-uri" ,perl-uri)))
     (home-page "https://www.xfce.org/")
     (synopsis "Extension library for Xfce")
@@ -220,7 +232,7 @@ development.")
 (define-public garcon
   (package
     (name "garcon")
-    (version "0.6.3")
+    (version "0.6.4")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/xfce/"
@@ -228,16 +240,17 @@ development.")
                                   "garcon-" version ".tar.bz2"))
               (sha256
                (base32
-                "00c4g4gmbr8710k0yv1zybnm9s2gkc1rj63zfrg9qgin66jzxcbn"))))
+                "0bbngb4bn1m325j7y40gky36kn2nlsvqs6xp0wy76x3s0d9lfpnp"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
        ("intltool" ,intltool)
        ("glib:bin" ,glib "bin")))
     (inputs
-     `(("gtk+" ,gtk+-2)))
+     `(("gtk+-2" ,gtk+-2))); required by garcon-gtk2-1.pc
     (propagated-inputs
-     `(("libxfce4ui" ,libxfce4ui))) ; required by garcon-gtk2-1.pc
+     `(("gtk+-3" ,gtk+)                 ; required by garcon-gtk3-1.pc
+       ("libxfce4ui" ,libxfce4ui))) ; required by garcon-gtk3-1.pc
     (home-page "https://www.xfce.org/")
     (synopsis "Implementation of the freedesktop.org menu specification")
     (description
@@ -250,7 +263,7 @@ merging features essential for loading menus modified with menu editors.")
 (define-public tumbler
   (package
     (name "tumbler")
-    (version "0.2.5")
+    (version "0.2.7")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/xfce/"
@@ -258,7 +271,7 @@ merging features essential for loading menus modified with menu editors.")
                                   "tumbler-" version ".tar.bz2"))
               (sha256
                (base32
-                "0nfld1lvrdpsjfvm08y5487km45pm1mdr928hgqm8j0shrx6jiv4"))))
+                "1r0l0ghcrj71ax7yil1m4p7yjrfqm3icx0s8r7ivwv3i2rgw617p"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
@@ -286,7 +299,7 @@ management D-Bus specification.")
 (define-public xfce4-panel
   (package
     (name "xfce4-panel")
-    (version "4.12.2")
+    (version "4.14.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/xfce/"
@@ -294,20 +307,32 @@ management D-Bus specification.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "1s8cvsrgmkmmm84g6mghpj2k4777gm22g5lrsf8pdy5qh6xql1a2"))
+                "1x3flv86jh9vqah7mr5mmfx2991mc6icsqjygsc3j88lgsyz7y6m"))
               (patches (search-patches "xfce4-panel-plugins.patch"))))
     (build-system gnu-build-system)
     (arguments
-     '(#:configure-flags '("--enable-gtk3")))
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'fix-tzdata-path
+           (lambda* (#:key inputs #:allow-other-keys)
+             (substitute* (string-append "plugins/clock/clock.c")
+               (("/usr/share/zoneinfo")
+                (string-append (assoc-ref inputs "tzdata") "/share/zoneinfo")))
+             #t)))))
     (native-inputs
      `(("pkg-config" ,pkg-config)
-       ("intltool" ,intltool)))
+       ("intltool" ,intltool)
+       ("glib:bin" ,glib "bin")))
     (propagated-inputs
-     `(("libxfce4util" ,libxfce4util))) ; required by libxfce4panel-1.0.pc
+     `(("gtk+-3" ,gtk+)                 ; required by libxfce4panel-2.0.pc
+       ("libxfce4util" ,libxfce4util))) ; required by libxfce4panel-2.0.pc
     (inputs
-     `(("exo" ,exo)
+     `(("tzdata" ,tzdata) ;; For fix-tzdata-path phase only.
+       ("exo" ,exo)
+       ("gtk+-2" ,gtk+-2)
+       ("xfconf" ,xfconf)
        ("garcon" ,garcon)
-       ("libwnck" ,libwnck-2)
+       ("libwnck" ,libwnck)
        ("libxfce4ui" ,libxfce4ui)))
     (native-search-paths
      (list (search-path-specification
@@ -324,7 +349,7 @@ applications menu, workspace switcher and more.")
 (define-public xfce4-battery-plugin
   (package
     (name "xfce4-battery-plugin")
-    (version "1.1.2")
+    (version "1.1.3")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/panel-plugins/"
@@ -332,12 +357,12 @@ applications menu, workspace switcher and more.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "1nypi0zazrcrbbm5vb221yw64zxrk56v4fffkblxlyd9m6gk80fn"))))
+                "18s0s004nidii8cc3ldp5n3jajc18vwn9vhkhmhy3lbbs520mghj"))))
     (build-system gnu-build-system)
     (native-inputs `(("pkg-config" ,pkg-config)
                      ("intltool" ,intltool)))
     (inputs `(("glib" ,glib)
-              ("gtk+" ,gtk+-2)
+              ("gtk+" ,gtk+)
               ("libxfce4util" ,libxfce4util)
               ("libxfce4ui" ,libxfce4ui)
               ("xfce4-panel" ,xfce4-panel)))
@@ -384,7 +409,7 @@ matching them against regular expressions.")
 (define-public xfce4-pulseaudio-plugin
   (package
     (name "xfce4-pulseaudio-plugin")
-    (version "0.4.1")
+    (version "0.4.2")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/panel-plugins/"
@@ -392,11 +417,26 @@ matching them against regular expressions.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "1w29y0a066y8as12xrkbfqcn7dpdsvx97idzw7028gmcvca87a3c"))))
+                "0851b0vs5xmy3cq899khcghmkqwvh9rnzwavi17msrsq4jyaxs2a"))))
     (build-system gnu-build-system)
+    (arguments
+     `(#:phases
+       ;; For dbus/dbus-glib.h in pulseaudio-config.h
+       (modify-phases %standard-phases
+         (add-after 'set-paths 'augment-cflags
+           (lambda* (#:key inputs #:allow-other-keys)
+             (setenv "C_INCLUDE_PATH"
+                     (string-append (assoc-ref inputs "dbus-glib")
+                                    "/include/dbus-1.0" ":"
+                                    (assoc-ref inputs "dbus")
+                                    "/include/dbus-1.0" ":"
+                                    (getenv "C_INCLUDE_PATH")))
+             #t)))))
     (native-inputs
      `(("intltool" ,intltool)
-       ("pkg-config" ,pkg-config)))
+       ("pkg-config" ,pkg-config)
+       ("dbus-glib" ,dbus-glib)
+       ("dbus" ,dbus)))
     (inputs
      `(("exo" ,exo)
        ("libnotify" ,libnotify)
@@ -415,7 +455,7 @@ keys for controlling the audio volume.")
 (define-public xfce4-whiskermenu-plugin
   (package
     (name "xfce4-whiskermenu-plugin")
-    (version "2.3.1")
+    (version "2.3.3")
     (source (origin
               (method url-fetch)
               (uri (string-append "http://archive.xfce.org/src/panel-plugins/"
@@ -423,7 +463,7 @@ keys for controlling the audio volume.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "1cnas2x7xi53v6ylq44040narhzd828dc0ysz8yk3qn2mmvp5yr2"))))
+                "0j0qmk372130avq8n07lfqrcm2al7n07l8gc06bbr1g6q57wrip0"))))
     (build-system cmake-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
@@ -432,7 +472,8 @@ keys for controlling the audio volume.")
      `(("xfce4-panel" ,xfce4-panel)
        ("garcon" ,garcon)
        ("exo" ,exo)
-       ("gtk+" ,gtk+-2)))
+       ("gtk+" ,gtk+)
+       ("libxfce4ui" ,libxfce4ui)))
     (arguments
       `(#:tests? #f)) ; no tests
     (home-page "https://goodies.xfce.org/projects/panel-plugins/xfce4-whiskermenu-plugin")
@@ -448,7 +489,7 @@ applications, and includes a search bar to search for applications.")
 (define-public xfce4-xkb-plugin
   (package
     (name "xfce4-xkb-plugin")
-    (version "0.7.1")
+    (version "0.8.1")
     (source (origin
               (method url-fetch)
               (uri (string-append "http://archive.xfce.org/src/panel-plugins/"
@@ -456,7 +497,7 @@ applications, and includes a search bar to search for applications.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "10g65j5ia389ahhn3b9hr52ghpp0817fk0m60rfrv4wrzqrjxzk1"))))
+                "18b7cnaf3zxm598p2i47vim3kbbi8w923ia1hwabdph1c89cz7n1"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("intltool" ,intltool)
@@ -464,7 +505,7 @@ applications, and includes a search bar to search for applications.")
     (inputs
      `(("garcon" ,garcon)
        ("librsvg" ,librsvg)
-       ("libwnck" ,libwnck-2)
+       ("libwnck" ,libwnck)
        ("libx11" ,libx11)
        ("libxfce4ui" ,libxfce4ui)
        ("libxklavier" ,libxklavier)
@@ -486,7 +527,7 @@ per window.")
 (define-public xfce4-appfinder
   (package
     (name "xfce4-appfinder")
-    (version "4.12.0")
+    (version "4.14.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "http://archive.xfce.org/xfce/"
@@ -494,14 +535,14 @@ per window.")
                                   "/src/" name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "0ry5hin8xhgnkmm9vs7jq8blk1cnbyr0s18nm1j6nsm7360abm1a"))))
+                "162dibl6ipp72x0s35yhk7kkzxd4qimagg5zdkkv5kjgjpa7bhby"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
        ("intltool" ,intltool)))
     (inputs
      `(("garcon" ,garcon)
-       ("gtk+" ,gtk+-2)
+       ("gtk+" ,gtk+)
        ("libxfce4ui" ,libxfce4ui)))
     (home-page "https://www.xfce.org/")
     (synopsis "Xfce application finder")
@@ -513,7 +554,7 @@ your system in categories, so you can quickly find and launch them.")
 (define-public xfce4-session
   (package
     (name "xfce4-session")
-    (version "4.12.1")
+    (version "4.14.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/xfce/"
@@ -521,10 +562,7 @@ your system in categories, so you can quickly find and launch them.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "1z88klls3j161n5snpamz4l3p4823q4h87wdnqikczxgs2ig5mwp"))
-              (patches
-               ;; See: https://bugzilla.xfce.org/show_bug.cgi?id=12282
-               (search-patches "xfce4-session-fix-xflock4.patch"))
+                "0gq4a8yiw58hb4d5dhvprxvzamqfg8qblmiqcw0b97mn9svnvyql"))
               (modules '((guix build utils)))
               (snippet
                '(begin
@@ -549,7 +587,7 @@ your system in categories, so you can quickly find and launch them.")
        ("upower" ,upower)
        ("polkit" ,polkit)
        ("libsm" ,libsm)
-       ("libwnck" ,libwnck-2)
+       ("libwnck" ,libwnck)
        ("libxfce4ui" ,libxfce4ui)))
     (home-page "https://www.xfce.org/")
     (synopsis "Xfce session manager")
@@ -561,7 +599,7 @@ allows you to shutdown the computer from Xfce.")
 (define-public xfce4-settings
   (package
     (name "xfce4-settings")
-    (version "4.12.4")
+    (version "4.14.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "http://archive.xfce.org/src/xfce/"
@@ -569,9 +607,13 @@ allows you to shutdown the computer from Xfce.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "16vgidhhc19dz0p0i6fp5iiwxd53ky143j6h14a9b7mz92nlr872"))
+                "0g0ipkg2fyg8r1z95ynx0xjr78bp49c2dwh4mli05nmb4gb40c70"))
               (patches (search-patches "xfce4-settings-defaults.patch"))))
     (build-system gnu-build-system)
+    (arguments
+     `(#:configure-flags '("--enable-pluggable-dialogs"
+                           "--enable-sound-settings"
+                           "--enable-xrandr")))
     (native-inputs
      `(("pkg-config" ,pkg-config)
        ("intltool" ,intltool)))
@@ -659,7 +701,7 @@ and import the new pictures from your camera.")
 (define-public xfwm4
   (package
     (name "xfwm4")
-    (version "4.12.5")
+    (version "4.14.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/xfce/"
@@ -667,14 +709,14 @@ and import the new pictures from your camera.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "1jnav0wcqlswl2v7nh61big9czg5hmnyvrvm6812sv362qic0xbp"))))
+                "05dn4a1i0nm6wm3nyj7qli5bvfalxghcl7x543qr5l33vkw2n65l"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
        ("intltool" ,intltool)))
     (inputs
      `(("libdrm" ,libdrm)
-       ("libwnck" ,libwnck-2)
+       ("libwnck" ,libwnck)
        ("libxcomposite" ,libxcomposite)
        ("libxdamage" ,libxdamage)
        ("libxfce4ui" ,libxfce4ui)
@@ -689,7 +731,7 @@ on the screen.")
 (define-public xfdesktop
   (package
     (name "xfdesktop")
-    (version "4.12.4")
+    (version "4.14.1")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/xfce/"
@@ -697,7 +739,7 @@ on the screen.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "1jzi851arljq5lza9inyq4ss513l62lbzbfm64a7x4320m8kb2h9"))
+                "10pqxgpj7b57wpcsh2k98sj4aavcgxbs1lc8qsq4mibf4hba01gp"))
               (modules '((guix build utils)))
               (snippet
                #~(begin
@@ -735,7 +777,7 @@ on the screen.")
      `(("exo" ,exo)
        ("garcon" ,garcon)
        ("libnotify" ,libnotify)
-       ("libwnck" ,libwnck-2)
+       ("libwnck" ,libwnck)
        ("libxfce4ui" ,libxfce4ui)
        ("thunar" ,thunar)))
     (home-page "https://www.xfce.org/")
@@ -749,7 +791,7 @@ devices and folders.")
 (define-public xfce4-terminal
   (package
     (name "xfce4-terminal")
-    (version "0.8.7.4")
+    (version "0.8.8")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/apps/" name "/"
@@ -757,7 +799,7 @@ devices and folders.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "1as2dh5ccmv3hdvsbxm4b0xhmv2ky2q18zxxrzr988x79npri3x8"))))
+                "1zc7hkq77ajia099wxgh4wdvwifcg2zkcz5d2xsf1zm0sdh6mflg"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)
@@ -831,7 +873,7 @@ system resources, while still being visually appealing and user friendly.")
 (define-public xfce4-power-manager
   (package
     (name "xfce4-power-manager")
-    (version "1.6.1")
+    (version "1.6.5")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/xfce/"
@@ -839,16 +881,14 @@ system resources, while still being visually appealing and user friendly.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "0sv5927q8jxvdfx7b06f8s7qyq3qa1nqn0b8c1b9bf234d2jba0y"))))
+                "0x3s2bdwfhp65dz5yn3k43j99ywqlsvrpz3pqmgwm0dik5wbdb8h"))))
     (build-system gnu-build-system)
-    (arguments
-     '(#:configure-flags '("--enable-gtk3")))
     (native-inputs
      `(("pkg-config" ,pkg-config)
        ("intltool" ,intltool)))
     (inputs
-     `(("lbxrandr" ,libxrandr)
-       ("gtk+" ,gtk+-2)
+     `(("libxrandr" ,libxrandr)
+       ("gtk+" ,gtk+)
        ("upower" ,upower)
        ("libnotify" ,libnotify)
        ("libxfce4ui" ,libxfce4ui)))
@@ -913,7 +953,7 @@ the desktop wallpaper.")
      `(("intltool" ,intltool)
        ("pkg-config" ,pkg-config)))
     (inputs
-     `(("libwnck" ,libwnck-2)
+     `(("libwnck" ,libwnck)
        ("libxmu" ,libxmu)
        ("gtk+" ,gtk+)
        ;; FIXME: Remove libxext and libxt when libxmu propagates them.
@@ -961,7 +1001,7 @@ several different time zones.")
 (define-public xfce4-notifyd
   (package
     (name "xfce4-notifyd")
-    (version "0.4.3")
+    (version "0.4.4")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://archive.xfce.org/src/apps/"
@@ -969,7 +1009,7 @@ several different time zones.")
                                   name "-" version ".tar.bz2"))
               (sha256
                (base32
-                "1h7avj149cafj9dabiza22y14i66vxgp5qj0wxx8i97w9h4dlg99"))))
+                "0m8vlbwdxiw9nmimaj5np9l5qm784gxpkdvc881k0hjcz6n72189"))))
     (build-system glib-or-gtk-build-system)
     (native-inputs
      `(("intltool" ,intltool)
@@ -1066,3 +1106,83 @@ of data to either CD/DVD/BD.")
     (description
      "Mousepad is a graphical text editor for Xfce based on Leafpad.")
     (license gpl2+)))
+
+(define-public xfce4-screenshooter
+  (package
+   (name "xfce4-screenshooter")
+   (version "1.9.5")
+   (source (origin
+            (method url-fetch)
+            (uri (string-append "http://archive.xfce.org/src/apps/"
+                                "xfce4-screenshooter/"
+                                (version-major+minor version)
+                                "/xfce4-screenshooter-"
+                                version ".tar.bz2"))
+            (sha256
+             (base32
+              "135kad07922jxjs05amn48sdgm2x1rh97wbzdmy9h85r5i1vaddz"))))
+   (build-system gnu-build-system)
+   (native-inputs
+    `(("pkg-config" ,pkg-config)
+      ("intltool" ,intltool)
+      ("glib:bin" ,glib "bin")))        ; glib-genmarshal
+   (inputs
+    `(("exo" ,exo)
+      ("libsoup" ,libsoup)
+      ("libxfce4ui" ,libxfce4ui)
+      ("xfce4-panel" ,xfce4-panel)))
+   (home-page "https://goodies.xfce.org/projects/applications/xfce4-screenshooter")
+   (synopsis "Xfce's application to take screenshots")
+   (description
+    "This application allows you to capture the entire screen, the active
+window or a selected region.  You can set the delay that elapses before the screenshot
+is taken and the action that will be done with the screenshot.
+A plugin for the Xfce panel is also available.")
+   (license gpl2+)))
+
+(define-public xfce4-screensaver
+  (package
+    (name "xfce4-screensaver")
+    (version "0.1.8")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "http://archive.xfce.org/src/apps/"
+                                  "xfce4-screensaver/"
+                                  (version-major+minor version)
+                                  "/xfce4-screensaver-"
+                                  version ".tar.bz2"))
+              (sha256
+               (base32
+                "1mv0r150yb29kji2rr2462g9p574bqjax1lb6bzcqgpxlmg08mj0"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'fix-dbus-1-path
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (dbus-dir (string-append out "/share/dbus-1/services")))
+               (substitute* "configure"
+                 (("DBUS_SESSION_SERVICE_DIR=.*")
+                  (string-append "DBUS_SESSION_SERVICE_DIR="
+                                 dbus-dir)))))))))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)
+       ("intltool" ,intltool)
+       ("glib" ,glib)                             ; glib-compile-schemas
+       ("glib:bin" ,glib "bin")))                 ; glib-compile-schemas
+    (inputs
+     `(("dbus-glib" ,dbus-glib)
+       ("libux-pam" ,linux-pam)
+       ("elogind" ,elogind)
+       ("garcon" ,garcon)
+       ("libxklavier" ,libxklavier)
+       ("libwnxk" ,libwnck)
+       ("libxscrnsaver" ,libxscrnsaver)
+       ("xfconf" ,xfconf)))
+    (home-page "https://docs.xfce.org/apps/screensaver/start")
+    (synopsis "Screensaver for the Xfce desktop")
+    (description
+     "Xfce Screensaver is a screen saver and locker that aims to have simple,
+ sane, secure defaults and be well integrated with the Xfce desktop. ")
+    (license gpl2+)))
diff --git a/gnu/services/cups.scm b/gnu/services/cups.scm
index e77c43bfbf..c3c6d2f1be 100644
--- a/gnu/services/cups.scm
+++ b/gnu/services/cups.scm
@@ -83,6 +83,14 @@
 (define (serialize-multiline-string-list field-name val)
   (for-each (lambda (str) (serialize-field field-name str)) val))
 
+(define (comma-separated-string-list? val)
+  (and (list? val)
+       (and-map (lambda (x)
+                  (and (string? x) (not (string-index x #\,))))
+                val)))
+(define (serialize-comma-separated-string-list field-name val)
+  (serialize-field field-name (string-join val ",")))
+
 (define (space-separated-string-list? val)
   (and (list? val)
        (and-map (lambda (x)
@@ -131,7 +139,7 @@
 (define-enumerated-field-type default-encryption
   (Never IfRequested Required))
 (define-enumerated-field-type error-policy
-  (abort-job retry-job retry-this-job stop-printer))
+  (abort-job retry-job retry-current-job stop-printer))
 (define-enumerated-field-type log-level
   (none emerg alert crit error warn notice info debug debug2))
 (define-enumerated-field-type log-time-format
@@ -450,7 +458,10 @@ or state files.")
   (user
    (string "lp")
    "Specifies the user name or ID that is used when running external
-programs."))
+programs.")
+  (set-env
+   (string "variable value")
+   "Set the specified environment variable to be passed to child processes."))
 
 (define (serialize-files-configuration field-name val)
   #f)
@@ -489,6 +500,11 @@ requests.")
    (boolean #f)
    "Specifies whether to purge job history data automatically when it is no
 longer required for quotas.")
+  (browse-dns-sd-sub-types
+   (comma-separated-string-list (list "_cups"))
+   "Specifies a list of DNS-SD sub-types to advertise for each shared printer.
+For example, @samp{\"_cups\" \"_print\"} will tell network clients that both
+CUPS sharing and IPP Everywhere are supported.")
   (browse-local-protocols
    (browse-local-protocols 'dnssd)
    "Specifies which protocols to use for local printer sharing.")
@@ -538,7 +554,7 @@ typically within a few milliseconds.")
    (error-policy 'stop-printer)
    "Specifies what to do when an error occurs.  Possible values are
 @code{abort-job}, which will discard the failed print job; @code{retry-job},
-which will retry the job at a later time; @code{retry-this-job}, which retries
+which will retry the job at a later time; @code{retry-current-job}, which retries
 the failed job immediately; and @code{stop-printer}, which stops the
 printer.")
   (filter-limit
@@ -798,9 +814,6 @@ reports @code{CUPS 2.0}.  @code{Minimal} reports @code{CUPS 2.0.0}.  @code{OS}
 reports @code{CUPS 2.0.0 (@var{uname})} where @var{uname} is the output of the
 @code{uname} command.  @code{Full} reports @code{CUPS 2.0.0 (@var{uname})
 IPP/2.0}.")
-  (set-env
-   (string "variable value")
-   "Set the specified environment variable to be passed to child processes.")
   (ssl-listen
    (multiline-string-list '())
    "Listens on the specified interfaces for encrypted connections.  Valid
diff --git a/gnu/services/web.scm b/gnu/services/web.scm
index 35efddb0ae..56971238ab 100644
--- a/gnu/services/web.scm
+++ b/gnu/services/web.scm
@@ -682,7 +682,8 @@ of index files."
        (system* (string-append #$nginx "/sbin/nginx")
                 "-c" #$(or file
                            (default-nginx-config config))
-                  "-t"))))
+                "-p" #$run-directory
+                "-t"))))
 
 (define (nginx-shepherd-service config)
   (match-record config
diff --git a/gnu/system.scm b/gnu/system.scm
index 485896ba0a..37573fd153 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -116,6 +116,7 @@
             boot-parameters-label
             boot-parameters-root-device
             boot-parameters-bootloader-name
+            boot-parameters-bootloader-menu-entries
             boot-parameters-store-device
             boot-parameters-store-mount-point
             boot-parameters-kernel
@@ -251,6 +252,8 @@ directly by the user."
   ;; OS's root file system, so it might be a device path like "/dev/sda3".
   (root-device      boot-parameters-root-device)
   (bootloader-name  boot-parameters-bootloader-name)
+  (bootloader-menu-entries                        ;list of <menu-entry>
+   boot-parameters-bootloader-menu-entries)
   (store-device     boot-parameters-store-device)
   (store-mount-point boot-parameters-store-mount-point)
   (kernel           boot-parameters-kernel)
@@ -297,6 +300,11 @@ file system labels."
          ((_ args) args)
          (#f       'grub))) ; for compatibility reasons.
 
+      (bootloader-menu-entries
+       (match (assq 'bootloader-menu-entries rest)
+         ((_ entries) (map sexp->menu-entry entries))
+         (#f          '())))
+
       ;; In the past, we would store the directory name of the kernel instead
       ;; of the absolute file name of its image.  Detect that and correct it.
       (kernel (if (string=? linux (direct-store-path linux))
@@ -1009,6 +1017,8 @@ such as '--root' and '--load' to <boot-parameters>."
           (operating-system-user-kernel-arguments os)))
      (initrd initrd)
      (bootloader-name bootloader-name)
+     (bootloader-menu-entries
+      (bootloader-configuration-menu-entries (operating-system-bootloader os)))
      (store-device (ensure-not-/dev (file-system-device store)))
      (store-mount-point (file-system-mount-point store)))))
 
@@ -1050,6 +1060,11 @@ being stored into the \"parameters\" file)."
                      #$(boot-parameters-kernel-arguments params))
                     (initrd #$(boot-parameters-initrd params))
                     (bootloader-name #$(boot-parameters-bootloader-name params))
+                    (bootloader-menu-entries
+                     #$(map menu-entry->sexp
+                            (or (and=> (operating-system-bootloader os)
+                                       bootloader-configuration-menu-entries)
+                                '())))
                     (store
                      (device
                       #$(device->sexp (boot-parameters-store-device params)))
diff --git a/gnu/system/linux-initrd.scm b/gnu/system/linux-initrd.scm
index 7e9563b923..0efb8fb222 100644
--- a/gnu/system/linux-initrd.scm
+++ b/gnu/system/linux-initrd.scm
@@ -99,7 +99,7 @@ the derivations referenced by EXP are automatically copied to the initrd."
                         #:init #$init
                         ;; Copy everything INIT refers to into the initrd.
                         #:references-graphs '("closure")
-                        #:gzip (string-append #$gzip "/bin/gzip")))))
+                        #:gzip (string-append #+gzip "/bin/gzip")))))
 
   (file-append (computed-file name builder
                               #:options