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-rw-r--r--gnu/packages/haskell.scm44
1 files changed, 42 insertions, 2 deletions
diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index 8d0e2aef69..a3ce2a3e4c 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -6,7 +6,7 @@
 ;;; Copyright © 2016, 2018 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2016, 2017 Nils Gillmann <ng0@n0.is>
 ;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
-;;; Copyright © 2015, 2016, 2017, 2018 Ricardo Wurmus <rekado@elephly.net>
+;;; 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>
@@ -14,8 +14,9 @@
 ;;; Copyright © 2017 rsiddharth <s@ricketyspace.net>
 ;;; Copyright © 2017, 2018 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018 Tonton <tonton@riseup.net>
-;;; Copyright © 2018 Timothy Sample <samplet@ngyro.com>
+;;; Copyright © 2018, 2019 Timothy Sample <samplet@ngyro.com>
 ;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
+;;; Copyright © 2018, 2019 Gabriel Hondet <gabrielhondet@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -508,6 +509,14 @@ interactive environment for the functional language Haskell.")
                      (assoc-ref inputs "ghc-testsuite")
                      "--strip-components=1")
              #t))
+         ;; This phase patches the 'ghc-pkg' command so that it sorts the list
+         ;; of packages in the binary cache it generates.
+         (add-before 'build 'fix-ghc-pkg-nondeterminism
+           (lambda _
+             (substitute* "utils/ghc-pkg/Main.hs"
+               (("confs = map \\(path </>\\) \\$ filter \\(\".conf\" `isSuffixOf`\\) fs")
+                "confs = map (path </>) $ filter (\".conf\" `isSuffixOf`) (sort fs)"))
+             #t))
          (add-after 'unpack-testsuite 'fix-shell-wrappers
            (lambda _
              (substitute* '("driver/ghci/ghc.mk"
@@ -11365,4 +11374,35 @@ embedded in your Haskell code.")
 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)))
+
 ;;; haskell.scm ends here