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-rw-r--r--gnu/local.mk3
-rw-r--r--gnu/packages/mercury.scm251
2 files changed, 253 insertions, 1 deletions
diff --git a/gnu/local.mk b/gnu/local.mk
index 447b9c3d4c..139c17e751 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -24,7 +24,7 @@
 # Copyright © 2019, 2020 John Soo <jsoo1@asu.edu>
 # Copyright © 2019 Jonathan Brielmaier <jonathan.brielmaier@web.de>
 # Copyright © 2019 Evan Straw <evan.straw99@gmail.com>
-# Copyright © 2019 Brett Gilio <brettg@gnu.org>
+# Copyright © 2019, 2020 Brett Gilio <brettg@gnu.org>
 # Copyright © 2019 Amin Bandali <bandali@gnu.org>
 # Copyright © 2020 Brendan Tildesley <mail@brendan.scot>
 # Copyright © 2020 Vincent Legoll <vincent.legoll@gmail.com>
@@ -363,6 +363,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/mc.scm				\
   %D%/packages/mcrypt.scm			\
   %D%/packages/medical.scm			\
+  %D%/packages/mercury.scm			\
   %D%/packages/mes.scm				\
   %D%/packages/messaging.scm			\
   %D%/packages/mingw.scm			\
diff --git a/gnu/packages/mercury.scm b/gnu/packages/mercury.scm
new file mode 100644
index 0000000000..a6ae451e63
--- /dev/null
+++ b/gnu/packages/mercury.scm
@@ -0,0 +1,251 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2020 Brett Gilio <brettg@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages mercury)
+  #:use-module (guix download)
+  #:use-module (guix git-download)
+  #:use-module (guix packages)
+  #:use-module (guix utils)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages autotools)
+  #:use-module (gnu packages bdw-gc)
+  #:use-module (gnu packages readline)
+  #:use-module (gnu packages texinfo)
+  #:use-module (gnu packages flex)
+  #:use-module (gnu packages shells)
+  #:use-module (gnu packages bison)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (ice-9 match)) ; match-lambda
+
+;; NOTE: Mercury uses a tightly coupled fork of BDWGC and
+;; libatomic-ops. When updating the package, please check the GitHub
+;; repository to ensure that the submodule commit matches what is
+;; provided.
+(define (gc-fork package-name package-url
+                 package-commit package-hash)
+  (let ((commit package-commit))
+    (package (inherit package-name)
+             (source
+              (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url package-url)
+                      (commit commit)))
+                (sha256 (base32 package-hash)))))))
+
+;; NOTE: Mercury /MUST/ bootstrap from a tarball release.
+;; Once the bootstrapping compiler is established, this
+;; minimal build can be used for further compiling Mercury
+;; from a git checkout with additional grades enabled.
+(define-public mercury-minimal
+  (package
+    (name "mercury-minimal")
+    (version "20.06")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://dl.mercurylang.org/release/mercury-srcdist-"
+                    version ".tar.gz"))
+              (sha256
+               (base32
+                "1gkr9w8lsdzqykqwd3f1a1phsqv090648i14ilhv8jdg85frdimr"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:modules ((guix build gnu-build-system)
+                  (guix build utils)
+                  (ice-9 match))
+       #:tests? #f ; Tests are run on the stage-2 compiler.
+       ;; TODO: Find a way to bypass all static linkages.
+       #:configure-flags (list "--enable-minimal-install")
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'replace-boehm-gc
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let ((out (assoc-ref outputs "out"))
+                   (libgc (assoc-ref inputs "libgc"))
+                   (libatomic-ops (assoc-ref inputs "libatomic-ops"))
+                   (unpack (assoc-ref %standard-phases 'unpack))
+                   (patch-source-shebangs
+                    (assoc-ref %standard-phases 'patch-source-shebangs)))
+               (map (match-lambda
+                      ((src orig-name new-name)
+                       (with-directory-excursion "."
+                         (apply unpack (list #:source src)))
+                       (delete-file-recursively new-name)
+                       (invoke "mv" orig-name new-name)
+                       (with-directory-excursion new-name
+                         (apply patch-source-shebangs (list #:source src)))))
+                    `((,libgc "source" "boehm_gc")))
+               (map (match-lambda
+                      ((src orig-name new-name)
+                       (with-directory-excursion "."
+                         (apply unpack (list #:source src)))
+                       (delete-file-recursively new-name)
+                       (invoke "mv" orig-name new-name)
+                       (with-directory-excursion new-name
+                         (apply patch-source-shebangs (list #:source src)))))
+                    `((,libatomic-ops "source" "boehm_gc/libatomic_ops")))
+               #t)))
+         (add-after 'replace-boehm-gc 'patch-paths
+           (lambda _
+             (substitute*
+                 (list "Makefile"
+                       "Mmakefile"
+                       "scripts/mercury_update_interface.in"
+                       "scripts/mercury_config.in"
+                       "scripts/mmake.in"
+                       "scripts/Mmake.vars.in"
+                       "scripts/mdb.in"
+                       "scripts/rs6000_hack"
+                       "scripts/fullarch"
+                       "scripts/mmc.in"
+                       "scripts/canonical_grade"
+                       "scripts/mprof.in"
+                       "scripts/gud.el"
+                       "scripts/ml.in"
+                       "scripts/canonical_grade.in"
+                       "scripts/mdprof.in"
+                       "scripts/vpath_find"
+                       "scripts/mkfifo_using_mknod.in"
+                       "scripts/prepare_install_dir.in"
+                       "scripts/mprof_merge_runs"
+                       "scripts/mtc"
+                       "scripts/mgnuc.in"
+                       "scripts/c2init.in"
+                       "bindist/bindist.Makefile"
+                       "boehm_gc/configure.ac"
+                       "boehm_gc/Makefile.direct")
+               (("/bin/sh") (which "sh"))
+               (("/bin/pwd") (which "pwd"))
+               (("/bin/rm") (which "rm")))
+             #t)))))
+    (native-inputs
+     `(("texinfo" ,texinfo)
+       ("flex" ,flex)
+       ("tcsh", tcsh)
+       ("bison" ,bison)
+       ("readline" ,readline)
+       ("libatomic-ops" ,(package-source
+                          (gc-fork
+                           libatomic-ops
+                           "https://github.com/Mercury-Language/libatomic_ops.git"
+                           "49b70d57f6922fd8be55a7dcb77955c8abfc9ae9"
+                           "1flvwscsa6b2b8a38vhhcgl10bbkb5nnihw7s7iia60cinf7wcqm")))
+       ("libgc" ,(package-source
+                  (gc-fork
+                   libgc-7
+                   "https://github.com/Mercury-Language/bdwgc.git"
+                   "43ac2ea45261ba0a715534e9da41b2504904c46a"
+                   "0bmzmbs7id0ndyhy9xli6fhfad1shrim6vmy2k8m1nqr5wb31q76")))
+       ("pkg-config" ,pkg-config)))
+    (synopsis "Pure logic programming language (used only for
+bootstrapping dependent Mercury)")
+    (description "Mercury is a logic/functional programming language which
+combines the clarity and expressiveness of declarative programming with advanced
+static analysis and error detection features.  Its highly optimized execution
+algorithm delivers efficiency far in excess of existing logic programming
+systems, and close to conventional programming systems.  Mercury addresses
+the problems of large-scale program development, allowing modularity,
+separate compilation, and numerous optimization/time trade-offs.")
+    (home-page "https://mercurylang.org")
+    (license license:gpl2)))
+
+;; NOTE: This package is quite large and will take an extensive
+;; amount of time to compile, especially with bootcheck functionality
+;; enabled. To ensure that we do not monopolize the CI & build servers,
+;; please make sure that your changes are justified.
+(define-public mercury
+  (package (inherit mercury-minimal)
+           (name "mercury")
+           (version "20.06")
+           (source
+            (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/Mercury-Language/mercury")
+                    (commit (string-append
+                             "version-"
+                             (string-join (string-split version #\.) "_")))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1pc51r7vlqmi689rkwdkk1ka2dyk36q11dqvl339cizng6mp72h6"))))
+           (arguments
+            (substitute-keyword-arguments
+                (package-arguments mercury-minimal)
+              ;; TODO: Find a way to bypass all static linkages.
+              ((#:configure-flags flags ''())
+               `(list ""))
+              ((#:tests? _) #f) ; FIXME: Many test-cases failing.
+              ((#:phases phases)
+               `(modify-phases ,phases
+                  (replace 'patch-paths
+                    (lambda _
+                      (substitute*
+                          (list "prepare.sh"
+                                "Makefile"
+                                "Mmakefile"
+                                "scripts/mercury_update_interface.in"
+                                "scripts/mercury_config.in"
+                                "scripts/mmake.in"
+                                "scripts/Mmake.vars.in"
+                                "scripts/mdb.in"
+                                "scripts/rs6000_hack"
+                                "scripts/fullarch"
+                                "scripts/mmc.in"
+                                "scripts/mprof.in"
+                                "scripts/gud.el"
+                                "scripts/ml.in"
+                                "scripts/canonical_grade.in"
+                                "scripts/mdprof.in"
+                                "scripts/vpath_find"
+                                "scripts/mkfifo_using_mknod.in"
+                                "scripts/prepare_install_dir.in"
+                                "scripts/mprof_merge_runs"
+                                "scripts/mtc"
+                                "scripts/mgnuc.in"
+                                "scripts/c2init.in"
+                                "tools/bootcheck"
+                                "boehm_gc/configure.ac"
+                                "boehm_gc/Makefile.direct")
+                        (("/bin/sh") (which "sh"))
+                        (("/bin/pwd") (which "pwd"))
+                        (("/bin/rm") (which "rm"))
+                        (("boehm_gc/.git") "boehm_gc"))
+                      #t))
+                  (replace 'bootstrap
+                    (lambda _
+                      (invoke "./prepare.sh")
+                      #t))))))
+           ;; TODO: Uncomment phase when tests are enabled.
+           ;; (replace 'check
+           ;;   (lambda _
+           ;;     (invoke "./tools/bootcheck")
+           ;;     #t))
+           ;;
+           ;; TODO: The mercury configuration system determines
+           ;; grade support by looking for available toolchains.
+           ;; Eventually we need to add inputs for Java, Erlang,
+           ;; C#, etc. in order to enable these extra grades.
+           (native-inputs
+            `(("mercury-minimal" ,mercury-minimal)
+              ("autoconf" ,autoconf)
+              ("automake" ,automake)
+              ,@(package-native-inputs mercury-minimal)))
+           (synopsis "Pure logic programming language")))