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+;;; 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")))
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