code:
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015, 2016, 2018 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
;;; Copyright © 2015, 2016 Federico Beffa <beffa@fbengineering.ch>
;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2016, 2017 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2016, 2017 Nils Gillmann <ng0@n0.is>
;;; Copyright © 2017 John Darrington <jmd@gnu.org>
;;; Copyright © 2017 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2017, 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2018 Adam Massmann <massmannak@gmail.com>
;;;
;;; 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 scheme)
  #:use-module (gnu packages)
  #:use-module ((guix licenses)
                #:select (gpl2+ lgpl2.0+ lgpl2.1+ lgpl3+ asl2.0 bsd-3
                          cc-by-sa4.0 non-copyleft))
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix utils)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system trivial)
  #:use-module (gnu packages bdw-gc)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages libevent)
  #:use-module (gnu packages libunistring)
  #:use-module (gnu packages m4)
  #:use-module (gnu packages multiprecision)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages pcre)
  #:use-module (gnu packages databases)
  #:use-module (gnu packages emacs)
  #:use-module (gnu packages ghostscript)
  #:use-module (gnu packages netpbm)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages tex)
  #:use-module (gnu packages base)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages avahi)
  #:use-module (gnu packages libphidget)
  #:use-module (gnu packages gcc)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages libffi)
  #:use-module (gnu packages fontutils)
  #:use-module (gnu packages image)
  #:use-module (gnu packages xorg)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages libedit)
  #:use-module (ice-9 match))

(define (mit-scheme-source-directory system version)
  (string-append "mit-scheme-"
                 (if (or (string-prefix? "x86_64" system)
                         (string-prefix? "i686" system))
                     ""
                     "c-")
                 version))

(define-public mit-scheme
  (package
    (name "mit-scheme")
    (version "9.2")
    (source #f)                                   ; see below
    (outputs '("out" "doc"))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f                                ; no "check" target
       #:modules ((guix build gnu-build-system)
                  (guix build utils)
                  (srfi srfi-1))
       #:phases
       (modify-phases %standard-phases
         (replace 'unpack
           (lambda* (#:key inputs #:allow-other-keys)
             (invoke "tar" "xzvf"
                     (assoc-ref inputs "source"))
             (chdir ,(mit-scheme-source-directory (%current-system)
                                                  version))
             ;; Delete these dangling symlinks since they break
             ;; `patch-shebangs'.
             (for-each delete-file
                       (append '("src/lib/shim-config.scm")
                               (find-files "src/lib/lib" "\\.so$")
                               (find-files "src/lib" "^liarc-")
                               (find-files "src/compiler" "^make\\.")))
             (chdir "src")
             #t))
         ;; FIXME: the texlive-union insists on regenerating fonts.  It stores
         ;; them in HOME, so it needs to be writeable.
         (add-before 'build 'set-HOME
           (lambda _ (setenv "HOME" "/tmp") #t))
         (replace 'build
           (lambda* (#:key system outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out")))
               (if (or (string-prefix? "x86_64" system)
                       (string-prefix? "i686" system))
                   (invoke "make" "compile-microcode")
                   (invoke "./etc/make-liarc.sh"
                           (string-append "--prefix=" out)))
               #t)))
         (add-after 'configure 'configure-doc
           (lambda* (#:key outputs inputs #:allow-other-keys)
             (with-directory-excursion "../doc"
               (let* ((out (assoc-ref outputs "out"))
                      (bash (assoc-ref inputs "bash"))
                      (bin/sh (string-append bash "/bin/sh")))
                 (invoke bin/sh "./configure"
                         (string-append "--prefix=" out)
                         (string-append "SHELL=" bin/sh))
                 (substitute* '("Makefile" "make-common")
                   (("/lib/mit-scheme/doc")
                    (string-append "/share/doc/" ,name "-" ,version)))
                 #t))))
         (add-after 'build 'build-doc
           (lambda* _
             (with-directory-excursion "../doc"
               (invoke "make"))
             #t))
         (add-after 'install 'install-doc
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (doc (assoc-ref outputs "doc"))
                    (old-doc-dir (string-append out "/share/doc"))
                    (new-doc/mit-scheme-dir
                     (string-append doc "/share/doc/" ,name "-" ,version)))
               (with-directory-excursion "../doc"
                 (for-each (lambda (target)
                             (invoke "make" target))
                           '("install-config" "install-info-gz" "install-man"
                             "install-html" "install-pdf")))
               (mkdir-p new-doc/mit-scheme-dir)
               (copy-recursively
                (string-append old-doc-dir "/" ,name "-" ,version)
                new-doc/mit-scheme-dir)
               (delete-file-recursively old-doc-dir)
               #t))))))
    (native-inputs
     `(("texlive" ,(texlive-union (list texlive-tex-texinfo)))
       ("texinfo" ,texinfo)
       ("m4" ,m4)))
    (inputs
     `(("libx11" ,libx11)

       ("source"

        ;; MIT/GNU Scheme is not bootstrappable, so it's recommended to
        ;; compile from the architecture-specific tarballs, which contain
        ;; pre-built binaries.  It leads to more efficient code than when
        ;; building the tarball that contains generated C code instead of
        ;; those binaries.
        ,(origin
          (method url-fetch)
          (uri (string-append "mirror://gnu/mit-scheme/stable.pkg/"
                              version "/mit-scheme-"
                              (match (%current-system)
                                ("x86_64-linux"
                                 (string-append version "-x86-64"))
                                ("i686-linux"
                                 (string-append version "-i386"))
                                (_
                                 (string-append "c-" version)))
                              ".tar.gz"))
          (sha256
           (match (%current-system)
             ("x86_64-linux"
              (base32
               "1skzxxhr0iq96bf0j5m7mvf3i4sppfyfa6gpqn34mwgkw1fx8274"))
             ("i686-linux"
              (base32
               "1fmlpnhf5a75db93phajh4ysbdgrgl72v45lk3kznriprl0a7jc6"))
             (_
              (base32
               "0w5ib5vsidihb4hb6fma3sp596ykr8izagm57axvgd6lqzwicsjg"))))))))

    ;; Fails to build on MIPS, see <http://bugs.gnu.org/18221>.
    (supported-systems '("x86_64-linux" "i686-linux" "armhf-linux"))

    (home-page "https://www.gnu.org/software/mit-scheme/")
    (synopsis "A Scheme implementation with integrated editor and debugger")
    (description
     "GNU/MIT Scheme is an implementation of the Scheme programming
language.  It provides an interpreter, a compiler and a debugger.  It also
features an integrated Emacs-like editor and a large runtime library.")
    (license gpl2+)
    (properties '((ftp-directory . "/gnu/mit-scheme/stable.pkg")))))

(define-public bigloo
  (package
    (name "bigloo")
    (version "4.3b")
    (source (origin
             (method url-fetch)
             (uri (string-append "ftp://ftp-sop.inria.fr/indes/fp/Bigloo/bigloo"
                                 version ".tar.gz"))
             (sha256
              (base32
               "1x7xdgsls277zlf6gcaxs2cj62xj6yvb0qxh0ddmxfamvxba0cf4"))
             ;; Remove bundled libraries.
             (modules '((guix build utils)))
             (snippet
              '(begin
                 (for-each delete-file-recursively
                           '("gc" "gmp" "libuv"))
                 #t))))
    (build-system gnu-build-system)
    (arguments
     `(#:test-target "test"
       #:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key inputs outputs #:allow-other-keys)

             (substitute* "configure"
               (("^shell=.*$")
                (string-append "shell=" (which "bash") "\n"))
               (("`date`") "0"))
             (substitute* "autoconf/runtest.in"
               ((", @DATE@") ""))
             (substitute* "autoconf/osversion"
               (("^version.*$") "version=\"\"\n"))
             (substitute* "comptime/Makefile"
               (("\\$\\(LDCOMPLIBS\\)")
                "$(LDCOMPLIBS) $(LDFLAGS)"))

             ;; The `configure' script doesn't understand options
             ;; of those of Autoconf.
             (let ((out (assoc-ref outputs "out")))
               (invoke "./configure"
                       (string-append "--prefix=" out)
                       ; use system libraries
                       "--customgc=no"
                       "--customunistring=no"
                       "--customlibuv=no"
                       (string-append"--mv=" (which "mv"))
                       (string-append "--rm=" (which "rm"))
                       "--cflags=-fPIC"
                       (string-append "--ldflags=-Wl,-rpath="
                                      (assoc-ref outputs "out")
                                      "/lib/bigloo/" ,version)
                       (string-append "--lispdir=" out
                                      "/share/emacs/site-lisp")
                       "--sharedbde=yes"
                       "--sharedcompiler=yes"
                       "--disable-patch"))))
         (add-after 'install 'install-emacs-modes
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (dir (string-append out "/share/emacs/site-lisp")))
               (invoke "make" "-C" "bmacs" "all" "install"
                       (string-append "EMACSBRAND=emacs25")
                       (string-append "EMACSDIR=" dir))))))))
    (inputs
     `(("emacs" ,emacs)                      ;UDE needs the X version of Emacs
       ("libgc" ,libgc)
       ("libunistring" ,libunistring)
       ("libuv" ,libuv)
       ("openssl" ,openssl)
       ("sqlite" ,sqlite)

       ;; Optional APIs for which Bigloo has bindings.
       ("avahi" ,avahi)
       ("libphidget" ,libphidget)
       ("pcre" ,pcre)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (propagated-inputs
     `(("gmp" ,gmp)))                             ; bigloo.h refers to gmp.h
    (home-page "http://www-sop.inria.fr/indes/fp/Bigloo/")
    (synopsis "Efficient Scheme compiler")
    (description
     "Bigloo is a Scheme implementation devoted to one goal: enabling
Scheme based programming style where C(++) is usually
required.  Bigloo attempts to make Scheme practical by offering
features usually presented by traditional programming languages
but not offered by Scheme and functional programming.  Bigloo
compiles Scheme modules.  It delivers small and fast stand alone
binary executables.  Bigloo enables full connections between
Scheme and C programs and between Scheme and Java programs.")
    (license gpl2+)))

(define-public hop
  (package
    (name "hop")
    (version "3.1.0-pre2")
    (source (origin
             (method url-fetch)
             (uri (string-append "ftp://ftp-sop.inria.fr/indes/fp/Hop/hop-"
                                 version ".tar.gz"))
             (sha256
              (base32
               "0bvq79vxcpgwydwi923cxb5w9isx2x8r3d0xndbdhacmmsw1m811"))))
    (build-system gnu-build-system)
    (arguments
     `(#:test-target "test"
       #:make-flags '("BIGLOO=bigloo")
       #:parallel-build? #f
       #:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out")))
               (invoke "./configure"
                       (string-append "--prefix=" out)
                       (string-append "--blflags="
                                      ;; user flags completely override useful
                                      ;; default flags, so repeat them here.
                                      "-copt \\$(CPICFLAGS) "
                                      "-L \\$(BUILDLIBDIR) "
                                      "-ldopt -Wl,-rpath," out "/lib"))))))))
    (inputs `(("avahi" ,avahi)
              ("bigloo" ,bigloo)
              ("libgc" ,libgc)
              ("libunistring" ,libunistring)
              ("libuv" ,libuv)
              ("pcre" ,pcre)
              ("sqlite" ,sqlite)
              ("which" ,which)))
    (home-page "http://hop.inria.fr/")
    (synopsis "Multi-tier programming language for the Web 2.0")
    (description
     "HOP is a multi-tier programming language for the Web 2.0 and the
so-called diffuse Web.  It is designed for programming interactive web
applications in many fields such as multimedia (web galleries, music players,
...), ubiquitous and house automation (SmartPhones, personal appliance),
mashups, office (web agendas, mail clients, ...), etc.")
    (license gpl2+)))

(define-public chicken
  (package
    (name "chicken")
    (version "4.13.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://code.call-cc.org/releases/"
                                  version "/chicken-" version ".tar.gz"))
              (sha256
               (base32
                "0hvckhi5gfny3mlva6d7y9pmx7cbwvq0r7mk11k3sdiik9hlkmdd"))))
    (build-system gnu-build-system)
    (arguments
     `(#:modules ((guix build gnu-build-system)
                  (guix build utils)
                  (srfi srfi-1))

       ;; No `configure' script; run "make check" after "make install" as
       ;; prescribed by README.
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)
         (delete 'check)
         (add-after 'install 'check
           (assoc-ref %standard-phases 'check)))

       #:make-flags (let ((out (assoc-ref %outputs "out")))
                      (list "PLATFORM=linux"
                            (string-append "PREFIX=" out)
                            (string-append "VARDIR=" out "/var/lib")))

       ;; Parallel builds are not supported, as noted in README.
       #:parallel-build? #f))
    (home-page "http://www.call-cc.org/")
    (synopsis "R5RS Scheme implementation that compiles native code via C")
    (description
     "CHICKEN is a compiler for the Scheme programming language.  CHICKEN
produces portable and efficient C, supports almost all of the R5RS Scheme
language standard, and includes many enhancements and extensions.")
    (license bsd-3)))

(define-public scheme48
  (package
    (name "scheme48")
    (version "1.9.2")
    (source (origin
             (method url-fetch)
             (uri (string-append "http://s48.org/" version
                                 "/scheme48-" version ".tgz"))
             (sha256
              (base32
               "1x4xfm3lyz2piqcw1h01vbs1iq89zq7wrsfjgh3fxnlm1slj2jcw"))
             (patches (search-patches "scheme48-tests.patch"))))
    (build-system gnu-build-system)
    (home-page "http://s48.org/")
    (synopsis "Scheme implementation using a bytecode interpreter")
    (description
     "Scheme 48 is an implementation of Scheme based on a byte-code
interpreter and is designed to be used as a testbed for experiments in
implementation techniques and as an expository tool.")

    ;; Most files are BSD-3; see COPYING for the few exceptions.
    (license bsd-3)))

(define-public racket
  (package
    (name "racket")
    (version "7.0")
    (source (origin
              (method url-fetch)
              (uri (list (string-append "http://mirror.racket-lang.org/installers/"
                                        version "/racket-" version "-src.tgz")
                         (string-append
                          "http://mirror.informatik.uni-tuebingen.de/mirror/racket/"
                          version "/racket-" version "-src.tgz")))
              (sha256
               (base32
                "1glv5amsp9xp480d4yr63hhm9kkyav06yl3a6p489nkr4cln0j9a"))
              (patches (search-patches
                        "racket-store-checksum-override.patch"))))
    (build-system gnu-build-system)
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (add-before 'configure 'pre-configure
           (lambda* (#:key inputs #:allow-other-keys)
             ;; Patch dynamically loaded libraries with their absolute paths.
             (let* ((library-path   (search-path-as-string->list
                                     (getenv "LIBRARY_PATH")))
                    (find-so        (lambda (soname)
                                      (search-path
                                       library-path
                                       (format #f "~a.so" soname))))
                    (patch-ffi-libs (lambda (file libs)
                                      (for-each
                                       (lambda (lib)
                                         (substitute* file
                                           (((format #f "\"~a\"" lib))
                                            (format #f "\"~a\"" (find-so lib)))))
                                       libs))))
               (substitute* "collects/db/private/sqlite3/ffi.rkt"
                 (("ffi-lib sqlite-so")
                  (format #f "ffi-lib \"~a\"" (find-so "libsqlite3"))))
               (substitute* "collects/openssl/libssl.rkt"
                 (("ffi-lib libssl-so")
                  (format #f "ffi-lib \"~a\"" (find-so "libssl"))))
               (substitute* "collects/openssl/libcrypto.rkt"
                 (("ffi-lib libcrypto-so")
                  (format #f "ffi-lib \"~a\"" (find-so "libcrypto"))))
               (substitute* "share/pkgs/math-lib/math/private/bigfloat/gmp.rkt"
                 (("ffi-lib libgmp-so")
                  (format #f "ffi-lib \"~a\"" (find-so "libgmp"))))
               (substitute* "share/pkgs/math-lib/math/private/bigfloat/mpfr.rkt"
                 (("ffi-lib libmpfr-so")
                  (format #f "ffi-lib \"~a\"" (find-so "libmpfr"))))
               (substitute* "share/pkgs/readline-lib/readline/rktrl.rkt"
                 (("\\(getenv \"PLT_READLINE_LIB\"\\)")
                  (format #f "\"~a\"" (find-so "libedit"))))
               (for-each
                (lambda (x) (apply patch-ffi-libs x))
                '(("share/pkgs/draw-lib/racket/draw/unsafe/cairo-lib.rkt"
                   ("libfontconfig" "libcairo"))
                  ("share/pkgs/draw-lib/racket/draw/unsafe/glib.rkt"
                   ("libglib-2.0" "libgmodule-2.0" "libgobject-2.0"))
                  ("share/pkgs/draw-lib/racket/draw/unsafe/jpeg.rkt"
                   ("libjpeg"))
                  ("share/pkgs/draw-lib/racket/draw/unsafe/pango.rkt"
                   ("libpango-1.0" "libpangocairo-1.0"))
                  ("share/pkgs/draw-lib/racket/draw/unsafe/png.rkt"
                   ("libpng"))
                  ("share/pkgs/db-lib/db/private/odbc/ffi.rkt"
                   ("libodbc"))
                  ("share/pkgs/gui-lib/mred/private/wx/gtk/x11.rkt"
                   ("libX11"))
                  ("share/pkgs/gui-lib/mred/private/wx/gtk/gsettings.rkt"
                   ("libgio-2.0"))
                  ("share/pkgs/gui-lib/mred/private/wx/gtk/gtk3.rkt"
                   ("libgdk-3" "libgtk-3"))
                  ("share/pkgs/gui-lib/mred/private/wx/gtk/unique.rkt"
                   ("libunique-1.0"))
                  ("share/pkgs/gui-lib/mred/private/wx/gtk/utils.rkt"
                   ("libgdk-x11-2.0" "libgdk_pixbuf-2.0" "libgtk-x11-2.0"))
                  ("share/pkgs/gui-lib/mred/private/wx/gtk/gl-context.rkt"
                   ("libGL"))
                  ("share/pkgs/sgl/gl.rkt"
                   ("libGL" "libGLU")))))
             (chdir "src")
             #t))
         (add-after 'unpack 'patch-/bin/sh
           (lambda _
             (substitute* "collects/racket/system.rkt"
               (("/bin/sh") (which "sh")))
             #t)))
       #:tests? #f                      ; XXX: how to run them?
       ))
    (inputs
     `(("libffi" ,libffi)
       ;; Hardcode dynamically loaded libraries for better functionality.
       ;; sqlite and libraries for `racket/draw' are needed to build the doc.
       ("cairo" ,cairo)
       ("fontconfig" ,fontconfig)
       ("glib" ,glib)
       ("glu" ,glu)
       ("gmp" ,gmp)
       ("gtk+" ,gtk+)                   ; propagates gdk-pixbuf+svg
       ("libjpeg" ,libjpeg)
       ("libpng" ,libpng)
       ("libx11" ,libx11)
       ("mesa" ,mesa)
       ("mpfr" ,mpfr)
       ("openssl" ,openssl)
       ("pango" ,pango)
       ("sqlite" ,sqlite)
       ("unixodbc" ,unixodbc)
       ("libedit" ,libedit)))
    (home-page "http://racket-lang.org")
    (synopsis "Implementation of Scheme and related languages")
    (description
     "Racket is an implementation of the Scheme programming language (R5RS and
R6RS) and related languages, such as Typed Racket.  It features a compiler and
a virtual machine with just-in-time native compilation, as well as a large set
of libraries.")
    (license lgpl2.0+)))

(define-public gambit-c
  (package
    (name "gambit-c")
    (version "4.9.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "http://www.iro.umontreal.ca/~gambit/download/gambit/v"
             (version-major+minor version) "/source/gambit-v"
             (string-map (lambda (c) (if (char=? c #\.) #\_ c)) version)
             ".tgz"))
       (sha256
        (base32 "19862w9ij0g5xrkskl4g89xbs17gp9cc6cfcdca6dlfkb3lk6xhp"))))
    (build-system gnu-build-system)
    (arguments
     '(#:configure-flags
       ;; According to the ./configure script, this makes the build slower and
       ;; use >= 1 GB memory, but makes Gambit much faster.
       '("--enable-single-host")))
    (home-page "http://gambitscheme.org")
    (synopsis "Efficient Scheme interpreter and compiler")
    (description
     "Gambit consists of two main programs: gsi, the Gambit Scheme
interpreter, and gsc, the Gambit Scheme compiler.  The interpreter contains
the complete execution and debugging environment.  The compiler is the
interpreter extended with the capability of generating executable files.  The
compiler can produce standalone executables or compiled modules which can be
loaded at run time.  Interpreted code and compiled code can be freely
mixed.")
    ;; Dual license.
    (license (list lgpl2.1+ asl2.0))))

(define-public chibi-scheme
  (package
    (name "chibi-scheme")
    (version "0.7.3")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://github.com/ashinn/chibi-scheme/archive/"
                           version ".tar.gz"))
       (sha256
        (base32 "16wppf4qzr0748iyp0m89gidsfgq9s6x3gw4xggym91waw4fh742"))
       (file-name (string-append "chibi-scheme-" version ".tar.gz"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases (modify-phases %standard-phases
                  (delete 'configure)
                  (add-before 'build 'set-cc
                    (lambda _
                      (setenv "CC" "gcc"))))
       #:make-flags (let ((out (assoc-ref %outputs "out")))
                      (list (string-append "PREFIX=" out)
                            (string-append "LDFLAGS=-Wl,-rpath=" out "/lib")))
       #:test-target "test"))
    (home-page "https://github.com/ashinn/chibi-scheme")
    (synopsis "Small embeddable Scheme implementation")
    (description
     "Chibi-Scheme is a very small library with no external dependencies
intended for use as an extension and scripting language in C programs.  In
addition to support for lightweight VM-based threads, each VM itself runs in
an isolated heap allowing multiple VMs to run simultaneously in different OS
threads.")
    (license bsd-3)))

(define-public scmutils
  (let ()
    (define (system-suffix)
      (cond
       ((string-prefix? "x86_64" (or (%current-target-system)
                                     (%current-system)))
        "x86-64")
       (else "i386")))

    (package
      (name "scmutils")
      (version "20160827")
      (source
       (origin
         (method url-fetch/tarbomb)
         (modules '((guix build utils)))
         (snippet '(begin
                     ;; Remove binary code
                     (delete-file-recursively "scmutils/mit-scheme")
                     #t))
         (uri (string-append "http://groups.csail.mit.edu/mac/users/gjs/6946"
                             "/scmutils-tarballs/" name "-" version
                             "-x86-64-gnu-linux.tar.gz"))
         (sha256
          (base32 "00ly5m0s4dy5kxravjaqlpii5zcnr6b9nqm0607lr7xcs52i4j8b"))))
      (build-system gnu-build-system)
      (inputs
       `(("mit-scheme" ,mit-scheme)
         ("emacs" ,emacs-minimal)))
      (arguments
       `(#:tests? #f ;; no tests-suite
         #:modules ((guix build gnu-build-system)
                    (guix build utils)
                    (guix build emacs-utils))
         #:imported-modules (,@%gnu-build-system-modules
                             (guix build emacs-utils))
         #:phases
         (modify-phases %standard-phases
           (replace 'configure
             ;; No standard build procedure is used. We set the correct
             ;; runtime path in the custom build system.
             (lambda* (#:key outputs #:allow-other-keys)
               (let ((out (assoc-ref outputs "out")))
                 ;; Required to find .bci files at runtime.
                 (with-directory-excursion "scmutils"
                   (rename-file "src" "scmutils"))
                 (substitute* "scmutils/scmutils/load.scm"
                   (("/usr/local/scmutils/")
                    (string-append out "/lib/mit-scheme-"
                                   ,(system-suffix) "/")))
                 #t)))
           (replace 'build
             ;; Compile the code and build a band.
             (lambda* (#:key outputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (make-img (string-append
                                 "echo '(load \"load\") "
                                 "(disk-save \"edwin-mechanics.com\")'"
                                 "| mit-scheme")))
                 (with-directory-excursion "scmutils/scmutils"
                   (and (zero? (system "mit-scheme < compile.scm"))
                        (zero? (system make-img))))
                 #t)))
           (add-before 'install 'fix-directory-names
             ;; Correct directory names in the startup script.
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (scm-root (assoc-ref inputs "mit-scheme")))
                 (substitute* "bin/mechanics"
                   (("ROOT=\"\\$\\{SCMUTILS_ROOT:-/.*\\}\"")
                    (string-append
                     "ROOT=\"${SCMUTILS_ROOT:-" scm-root "}\"\n"
                     "LIB=\"${ROOT}/lib/mit-scheme-"
                     ,(system-suffix) ":"
                     out "/lib/mit-scheme-" ,(system-suffix) "\""))
                   (("EDWIN_INFO_DIRECTORY=.*\n") "")
                   (("SCHEME=.*\n")
                    (string-append "SCHEME=\"${ROOT}/bin/scheme "
                                   "--library ${LIB}\"\n"))
                   (("export EDWIN_INFO_DIRECTORY") ""))
                 #t)))
           (add-before 'install 'emacs-tags
             ;; Generate Emacs's tags for easy reference to source
             ;; code.
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (with-directory-excursion "scmutils/scmutils"
                 (apply invoke "etags" (find-files "." "\\.scm")))
               #t))
           (replace 'install
             ;; Copy files to the store.
             (lambda* (#:key outputs #:allow-other-keys)
               (define* (copy-files-to-directory files dir
                                                 #:optional (delete? #f))
                 (for-each (lambda (f)
                             (copy-file f (string-append dir "/" f))
                             (when delete? (delete-file f)))
                           files))

               (let* ((out (assoc-ref outputs "out"))
                      (bin (string-append out "/bin"))
                      (doc (string-append out "/share/doc/"
                                          ,name "-" ,version))
                      (lib (string-append out "/lib/mit-scheme-"
                                          ,(system-suffix)
                                          "/scmutils")))
                 (for-each mkdir-p (list lib doc bin))
                 (with-directory-excursion "scmutils/scmutils"
                   (copy-files-to-directory '("COPYING" "LICENSE")
                                            doc #t)
                   (for-each delete-file (find-files "." "\\.bin"))
                   (copy-files-to-directory '("edwin-mechanics.com")
                                            (string-append lib "/..") #t)
                   (copy-recursively "." lib))
                 (with-directory-excursion "bin"
                   (copy-files-to-directory (find-files ".") bin))
                 (with-directory-excursion "scmutils/manual"
                   (copy-files-to-directory (find-files ".") doc))
                 #t)))
           (add-after 'install 'emacs-helpers
             ;; Add convenience Emacs commands to easily load the
             ;; Scmutils band in an MIT-Scheme buffer inside of Emacs
             ;; and to easily load code tags.
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (mit-root (assoc-ref inputs "mit-scheme"))
                      (emacs-lisp-dir
                       (string-append out "/share/emacs/site-lisp"
                                      "/guix.d/" ,name "-" ,version))
                      (el-file (string-append emacs-lisp-dir
                                              "/scmutils.el"))
                      (lib-relative-path
                       (string-append "/lib/mit-scheme-"
                                      ,(system-suffix))))
                 (mkdir-p emacs-lisp-dir)
                 (call-with-output-file el-file
                   (lambda (p)
                     (format p
                             ";;;###autoload
(defun scmutils-load ()
  (interactive)
  (require 'xscheme)
  (let ((mit-root \"~a\")
    (scmutils \"~a\"))
    (run-scheme
     (concat mit-root \"/bin/scheme --library \"
          mit-root \"~a:\" scmutils \"~a\"
          \" --band edwin-mechanics.com\"
          \" --emacs\"))))

;;;###autoload
(defun scmutils-load-tags ()
  (interactive)
  (let ((scmutils \"~a\"))
    (visit-tags-table (concat scmutils \"/TAGS\"))))
"
                                      mit-root out
                                      lib-relative-path
                                      lib-relative-path
                                      (string-append out lib-relative-path
                                                     "/scmutils"))))
                          (emacs-generate-autoloads ,name emacs-lisp-dir)
                          (emacs-byte-compile-directory emacs-lisp-dir)
                          #t))))))
      (home-page
       "http://groups.csail.mit.edu/mac/users/gjs/6946/linux-install.htm")
      (synopsis "Scmutils library for MIT Scheme")
      (description "The Scmutils system is an integrated library of
procedures, embedded in the programming language Scheme, and intended to
support teaching and research in mathematical physics and electrical
engineering.")
      (license gpl2+))))

(define-public sicp
  (let ((commit "225c172f9b859902a64a3c5dd5e1f9ac1a7382de"))
    (package
      (name "sicp")
      (version (string-append "20170703-1." (string-take commit 7)))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://github.com/sarabander/sicp")
                      (commit commit)))
                (sha256
                 (base32
                  "0bhdrdc1mgdjdsg4jksq9z6x129f3346jbf3zir2a0dfmsj6m10n"))
                (file-name (string-append name "-" version "-checkout"))))
      (build-system trivial-build-system)
      (native-inputs `(("gzip" ,gzip)
                       ("source" ,source)
                       ("texinfo" ,texinfo)))
      (arguments
       `(#:modules ((guix build utils)
                    (srfi srfi-1)
                    (srfi srfi-26))
         #:builder
         (begin
           (use-modules (guix build utils)
                        (srfi srfi-1)
                        (srfi srfi-26))
           (let ((gzip (assoc-ref %build-inputs "gzip"))
                 (source (assoc-ref %build-inputs "source"))
                 (texinfo (assoc-ref %build-inputs "texinfo"))
                 (html-dir (string-append %output "/share/doc/" ,name "/html"))
                 (info-dir (string-append %output "/share/info")))
             (copy-recursively (string-append source "/html") html-dir)
             (setenv "PATH" (string-append gzip "/bin"
                                           ":" texinfo "/bin"))
             (mkdir-p info-dir)
             (invoke "makeinfo" "--output"
                     (string-append info-dir "/sicp.info")
                     (string-append source "/sicp-pocket.texi"))
             (for-each (cut invoke "gzip" "-9n" <>)
                       (find-files info-dir))
             #t))))
      (home-page "https://sarabander.github.io/sicp")
      (synopsis "Structure and Interpretation of Computer Programs")
      (description "Structure and Interpretation of Computer Programs (SICP) is
a textbook aiming to teach the principles of computer programming.

Using Scheme, a dialect of the Lisp programming language, the book explains
core computer science concepts such as abstraction in programming,
metalinguistic abstraction, recursion, interpreters, and modular programming.")
      (license cc-by-sa4.0))))

(define-public scheme48-rx
  (let* ((commit "dd9037f6f9ea01019390614f6b126b7dd293798d")
         (revision "2"))
    (package
      (name "scheme48-rx")
      (version (string-append "0.0.0-" revision "." (string-take commit 7)))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/scheme/rx")
               (commit commit)))
         (sha256
          (base32
           "1bvriavxw5kf2izjbil3999vr983vkk2xplfpinafr86m40b2cci"))
         (file-name (string-append name "-" version "-checkout"))))
      (build-system trivial-build-system)
      (arguments
       `(#:modules ((guix build utils))
         #:builder
         (begin
           (use-modules (guix build utils))
           (let ((share (string-append %output
                                       "/share/scheme48-"
                                       ,(package-version scheme48)
                                       "/rx")))
             (chdir (assoc-ref %build-inputs "source"))
             (mkdir-p share)
             (copy-recursively "." share)
             #t))))
      (native-inputs
       `(("source" ,source)
         ("scheme48" ,scheme48)))
      (home-page "https://github.com/scheme/rx/")
      (synopsis "SRE String pattern-matching library for scheme48")
      (description
       "String pattern-matching library for scheme48 based on the SRE
regular-expression notation.")
      (license bsd-3))))

(define-public slib
  (package
    (name "slib")
    (version "3b5")
    (source (origin
             (method url-fetch)
             (uri (string-append "http://groups.csail.mit.edu/mac/ftpdir/scm/slib-"
                                 version ".zip"))
             (sha256
              (base32
               "0q0p2d53p8qw2592yknzgy2y1p5a9k7ppjx0cfrbvk6242c4mdpq"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; There is no check target.
       #:phases
       (modify-phases %standard-phases
         (add-after 'install 'remove-bin-share
                    (lambda* (#:key inputs outputs #:allow-other-keys)
                      (delete-file-recursively
                       (string-append (assoc-ref outputs "out") "/bin"))
                      #t))
         (replace 'configure
                  (lambda* (#:key inputs outputs #:allow-other-keys)
                    (invoke "./configure"
                            (string-append "--prefix="
                                           (assoc-ref outputs "out"))))))))
    (native-inputs `(("unzip" ,unzip)
                     ("texinfo" ,texinfo)))
    (home-page "http://people.csail.mit.edu/jaffer/SLIB.html")
    (synopsis "Compatibility and utility library for Scheme")
    (description "SLIB is a portable Scheme library providing compatibility and
utility functions for all standard Scheme implementations.")
    (license (non-copyleft
              "http://people.csail.mit.edu/jaffer/SLIB_COPYING.txt"
              "Or see COPYING in the distribution."))))

(define-public scm
  (package
    (name "scm")
    (version "5f2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://groups.csail.mit.edu/mac/ftpdir/scm/scm-"
                    version ".zip"))
              (sha256
               (base32
                "050ijb51jm1cij9g3r89zl9rawsrikhbb5y8zb7lspb7bsxq5w99"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (replace 'configure
                  (lambda* (#:key inputs outputs #:allow-other-keys)
                    (invoke "./configure"
                            (string-append "--prefix="
                                           (assoc-ref outputs "out")))))
         (add-before 'build 'pre-build
                     (lambda* (#:key inputs #:allow-other-keys)
                       (substitute* "Makefile"
                         (("ginstall-info") "install-info"))
                       #t))
         (replace 'build
                  (lambda* (#:key inputs outputs #:allow-other-keys)
                    (setenv "SCHEME_LIBRARY_PATH"
                            (string-append (assoc-ref inputs "slib")
                                           "/lib/slib/"))
                    (invoke "make" "scmlit" "CC=gcc")
                    (invoke "make" "all")))
         (add-after 'install 'post-install
                    (lambda* (#:key inputs outputs #:allow-other-keys)
                      (let* ((out         (assoc-ref outputs "out"))
                             (req (string-append out "/lib/scm/require.scm")))
                        (delete-file req)
                        (format (open req (logior O_WRONLY O_CREAT))
                                "(define (library-vicinity) ~s)\n"
                                (string-append (assoc-ref inputs "slib")
                                               "/lib/slib/"))

                        ;; We must generate the slibcat file.
                        (invoke (string-append out "/bin/scm")
                                "-br" "new-catalog")))))))
    (inputs `(("slib" ,slib)))
    (native-inputs `(("unzip" ,unzip)
                     ("texinfo" ,texinfo)))
    (home-page "http://people.csail.mit.edu/jaffer/SCM")
    (synopsis "Scheme implementation conforming to R5RS and IEEE P1178")
    (description "GNU SCM is an implementation of Scheme.  This
implementation includes Hobbit, a Scheme-to-C compiler, which can
generate C files whose binaries can be dynamically or statically
linked with a SCM executable.")
    (license lgpl3+)))

(define-public tinyscheme
  (package
    (name "tinyscheme")
    (version "1.41")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/" name "/" name "/"
                                  name "-" version "/" name "-" version ".zip"))
              (sha256
               (base32
                "0yqma4jrjgj95f3hf30h542x97n8ah234n19yklbqq0phfsa08wf"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("unzip" ,unzip)))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (replace 'unpack
           (lambda* (#:key source #:allow-other-keys)
             (invoke "unzip" source)
             (chdir (string-append ,name "-" ,version))
             #t))
         (add-after 'unpack 'set-scm-directory
           ;; Hard-code ‘our’ init.scm instead of looking in the current
           ;; working directory, so invoking ‘scheme’ just works.
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (scm (string-append out "/share/" ,name)))
               (substitute* "scheme.c"
                 (("init.scm" all)
                  (string-append scm "/" all)))
               #t)))
         (delete 'configure)            ; no configure script
         (replace 'install
           ;; There's no ‘install’ target.  Install files manually.
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out     (assoc-ref outputs "out"))
                    (bin     (string-append out "/bin"))
                    (doc     (string-append out "/share/doc/"
                                            ,name "-" ,version))
                    (include (string-append out "/include"))
                    (lib     (string-append out "/lib"))
                    (scm     (string-append out "/share/" ,name)))
               (install-file "scheme" bin)
               (install-file "Manual.txt" doc)
               (install-file "scheme.h" include)
               (install-file "libtinyscheme.so" lib)
               (install-file "init.scm" scm)
               #t))))
       #:tests? #f))                    ; no tests
    (home-page "http://tinyscheme.sourceforge.net/")
    (synopsis "Light-weight interpreter for the Scheme programming language")
    (description
     "TinyScheme is a light-weight Scheme interpreter that implements as large a
subset of R5RS as was possible without getting very large and complicated.

It's meant to be used as an embedded scripting interpreter for other programs.
As such, it does not offer an Integrated Development Environment (@dfn{IDE}) or
extensive toolkits, although it does sport a small (and optional) top-level
loop.

As an embedded interpreter, it allows multiple interpreter states to coexist in
the same program, without any interference between them.  Foreign functions in C
can be added and values can be defined in the Scheme environment.  Being quite a
small program, it is easy to comprehend, get to grips with, and use.")
    (license bsd-3)))                   ; there are no licence headers

(define-public stalin
  (let ((commit "ed1c9e339c352b7a6fee40bb2a47607c3466f0be"))
    ;; FIXME: The Stalin "source" contains C code generated by itself:
    ;; 'stalin-AMD64.c', etc.
    (package
      (name "stalin")
      (version "0.11")
      (source (origin
                ;; Use Pearlmutter's upstream branch with AMD64 patches
                ;; applied. Saves us from including those 20M! patches
                ;; in Guix. For more info, see:
                ;; <ftp.ecn.purdue.edu/qobi/stalin-0.11-amd64-patches.tgz>
                (method git-fetch)
                (uri (git-reference
                      (url "https://github.com/barak/stalin.git")
                      (commit commit)))
                (file-name (string-append name "-" version "-checkout"))
                (sha256
                 (base32
                  "15a5gxj9v7jqlgkg0543gdflw0rbrir7fj5zgifnb33m074wiyhn"))
                (modules '((guix build utils)))
                (snippet
                 ;; remove gc libs from build, we have them as input
                 '(begin
                    (delete-file "gc6.8.tar.gz")
                    (delete-file-recursively "benchmarks")
                    (substitute* "build"
                      ((".*gc6.8.*") "")
                      (("  cd \\.\\.") "")
                      ((".*B include/libgc.a") "")
                      ((".*make.*") ""))
                    #t))))
      (build-system gnu-build-system)
      (arguments
       `(#:make-flags (list "ARCH_OPTS=-freg-struct-return")
         #:phases
         (modify-phases %standard-phases
           (replace 'configure
             (lambda* (#:key outputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (include-out (string-append out "/include")))
                 (invoke "./build")
                 (for-each (lambda (fname)
                             (install-file fname include-out))
                           (find-files "include"))
                 (substitute* "makefile"
                   (("\\./include") include-out))
                 (substitute* "post-make"
                   (("`pwd`") out))
                 #t)))
           (delete 'check)
           (replace 'install
             (lambda* (#:key outputs #:allow-other-keys)
               (let ((out (assoc-ref outputs "out")))
                 (install-file "stalin.1"
                               (string-append out "/share/man/man1"))
                 (install-file "stalin"
                               (string-append out "/bin"))
                 #t))))))
      (inputs
       `(("libx11" ,libx11)))
      (propagated-inputs
       `(("libgc" ,libgc)))
      (supported-systems '("x86_64-linux"))
      (home-page "https://engineering.purdue.edu/~qobi/papers/fdlcc.pdf")
      (synopsis "Brutally efficient Scheme compiler")
      (description
       "Stalin is an aggressively optimizing whole-program compiler
for Scheme that does polyvariant interprocedural flow analysis,
flow-directed interprocedural escape analysis, flow-directed
lightweight CPS conversion, flow-directed lightweight closure
conversion, flow-directed interprocedural lifetime analysis, automatic
in-lining, unboxing, and flow-directed program-specific and
program-point-specific low-level representation selection and code
generation.")
      (license gpl2+))))


code:
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013 Cyril Roelandt <tipecaml@gmail.com>
;;; Copyright © 2014 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2015, 2017 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2016, 2017 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016 Alex Griffin <a@ajgrf.com>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2017, 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;;
;;; 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 screen)
  #:use-module (srfi srfi-1)
  #:use-module (guix licenses)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix build-system gnu)
  #:use-module (gnu packages)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages python)
  #:use-module (gnu packages slang)
  #:use-module (gnu packages texinfo))

(define-public screen
  (package
    (name "screen")
    (version "4.6.2")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://gnu/screen/screen-"
                                 version ".tar.gz"))
             (sha256
              (base32 "0fps0fsipfbh7c2cnp7rjw9n79j0ysq21mk8hzifa33a1r924s8v"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("makeinfo" ,texinfo)))
    (inputs
     `(("ncurses" ,ncurses)
       ("perl" ,perl)))
    (arguments
     `(#:configure-flags
       ;; By default, screen supports 16 colors, but we want 256 when
       ;; ~/.screenrc contains 'term xterm-256color'.
       '("--enable-colors256")))
    (home-page "https://www.gnu.org/software/screen/")
    (synopsis "Full-screen window manager providing multiple terminals")
    (description
     "GNU Screen is a terminal window manager that multiplexes a single
terminal between several processes.  The virtual terminals each provide
features such as a scroll-back buffer and a copy-and-paste mechanism.  Screen
then manages the different virtual terminals, allowing you to easily switch
between them, to detach them from the current session, or even splitting the
view to show two terminals at once.")
    (license gpl2+)))

(define-public dtach
  (package
    (name "dtach")
    (version "0.9")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/" name "/" name "/"
                                  version "/" name "-" version ".tar.gz"))
              (sha256
               (base32
                "1wwj2hlngi8qn2pisvhyfxxs8gyqjlgrrv5lz91w8ly54dlzvs9j"))))
    (build-system gnu-build-system)
    (arguments
     ;; No install target.
     '(#:phases
       (modify-phases %standard-phases
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out")))
               (install-file "dtach" (string-append out "/bin"))
               (install-file "dtach.1" (string-append out "/share/man/man1"))
               #t))))
       ;; No check target.
       #:tests? #f))
    (home-page "http://dtach.sourceforge.net/")
    (synopsis "Emulates the detach feature of screen")
    (description
     "dtach is a tiny program that emulates the detach feature of screen,
allowing you to run a program in an environment that is protected from the
controlling terminal and attach to it later.")
    (license gpl2+)))

(define-public byobu
  (package
    (name "byobu")
    (version "5.127")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://launchpad.net/byobu/trunk/"
                           version "/+download/byobu_"
                           version ".orig.tar.gz"))
       (sha256
        (base32
         "0fznlj454vgxgzfw3avmvvjpawggs66da5l8k6v0lnzzd75wgbsb"))
       (patches (search-patches "byobu-writable-status.patch"))))
    (build-system gnu-build-system)
    (inputs
     `(("python" ,python-wrapper)       ; for config and session GUIs
       ("python-newt" ,newt "python")))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-before
          'configure 'provide-locale
          (lambda* (#:key inputs #:allow-other-keys)
            (let ((libc (assoc-ref inputs "libc"))) ; implicit input
              (substitute* "usr/bin/byobu.in"
                (("locale") (string-append libc "/bin/locale")))
              #t)))
         (add-after
          'install 'wrap-python-scripts
          (lambda* (#:key inputs outputs #:allow-other-keys)
            (let* ((python (string-append (assoc-ref inputs "python")
                                          "/bin/python"))
                   (out    (assoc-ref outputs "out"))
                   (config (string-append out "/bin/byobu-config"))
                   (select (string-append out "/bin/byobu-select-session")))
              (wrap-program config
                `("BYOBU_PYTHON" = (,python))
                `("PYTHONPATH" ":" prefix (,(getenv "PYTHONPATH"))))
              (wrap-program select
                `("BYOBU_PYTHON" = (,python)))
              #t))))))
    (home-page "https://byobu.org/")
    (synopsis "Text-based window manager and terminal multiplexer")
    (description
     "Byobu is a Japanese term for decorative, multi-panel screens that serve
as folding room dividers.  The Byobu software includes an enhanced profile,
configuration utilities, and system status notifications for the GNU Screen
window manager as well as the Tmux terminal multiplexer.")
    (license gpl3+)))

(define-public reptyr
  (package
    (name "reptyr")
    (version "0.6.2")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://github.com/nelhage/reptyr/archive"
                           "/reptyr-" version ".tar.gz"))
       ;; XXX: To be removed on next reptyr release.
       (patches (search-patches "reptyr-fix-gcc-7.patch"))
       (sha256
        (base32
         "07pfl0rkgm8m3f3jy8r9l2yvnhf8lgllpsk3mh57mhzdxq8fagf7"))))
    (build-system gnu-build-system)
    (arguments
     '(#:tests? #f ; no tests
       #:make-flags (list "CC=gcc"
                          (string-append "PREFIX=" %output))
       #:phases (modify-phases %standard-phases (delete 'configure))))
    (home-page "https://github.com/nelhage/reptyr")
    (synopsis "Tool for reparenting a running program to a new terminal")
    (description
     "reptyr is a utility for taking an existing running program and attaching
it to a new terminal.  Started a long-running process over @code{ssh}, but have
to leave and don't want to interrupt it?  Just start a @code{screen}, use
reptyr to grab it, and then kill the @code{ssh} session and head on home.")
    ;; Reptyr currently does not support mips or aarch64.
    (supported-systems (fold delete %supported-systems
                             '("mips64el-linux" "aarch64-linux")))
    (license expat)))

license: mit


code:
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2017, 2018 Nicolas Goaziou <mail@nicolasgoaziou.fr>
;;; Copyright © 2018 Clément Lassieur <clement@lassieur.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 scribus)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix utils)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix build-system cmake)
  #:use-module (gnu packages)
  #:use-module (gnu packages boost)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages cups)
  #:use-module (gnu packages fontutils)
  #:use-module (gnu packages ghostscript)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages icu4c)
  #:use-module (gnu packages image)
  #:use-module (gnu packages imagemagick)
  #:use-module (gnu packages libreoffice)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages pdf)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages python)
  #:use-module (gnu packages qt)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages xml))

(define-public scribus
  (package
    (name "scribus")
    (version "1.5.4")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/scribus/scribus-devel/"
                           version "/scribus-" version ".tar.xz"))
       (sha256
        (base32
         "00ys0p6h3iq77kh72dkl0qrf7qvznq18qdrgiq10gfxja1995034"))
       (modules '((guix build utils)))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f                      ;no test target
       #:configure-flags
       '("-DWANT_GRAPHICSMAGICK=1")
       #:phases
       (modify-phases %standard-phases
         (add-after 'install 'wrap-program
           (lambda* (#:key inputs outputs #:allow-other-keys)
             ;; Fix "ImportError: No module named _sysconfigdata_nd" where
             ;; Scribus checks PATH and eventually runs system's Python
             ;; instead of package's.
             (let* ((out (assoc-ref outputs "out"))
                    (py2 (assoc-ref inputs "python")))
               (wrap-program (string-append out "/bin/scribus")
                 `("PATH" ":" prefix (,(string-append py2 "/bin")))))
             #t)))))
    (inputs
     `(("boost" ,boost)
       ("cairo" ,cairo)
       ("cups" ,cups)
       ("fontconfig" ,fontconfig)
       ("freetype" ,freetype)
       ("graphicsmagick" ,graphicsmagick)
       ("harfbuzz" ,harfbuzz)
       ("hunspell" ,hunspell)
       ("icu4c" ,icu4c)
       ("lcms" ,lcms)
       ("libcdr" ,libcdr)
       ("libfreehand" ,libfreehand)
       ("libjpeg" ,libjpeg)
       ("libmspub" ,libmspub)
       ("libpagemaker" ,libpagemaker)
       ("librevenge" ,librevenge)
       ("libtiff" ,libtiff)
       ("libvisio" ,libvisio)
       ("libxml2" ,libxml2)
       ("libzmf" ,libzmf)
       ("openssl" ,openssl)
       ("podofo" ,podofo)
       ("poppler" ,poppler)
       ("python" ,python-2)             ;need Python library
       ("qtbase" ,qtbase)
       ("qtdeclarative" ,qtdeclarative)
       ("zlib" ,zlib)))
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("qttools" ,qttools)
       ("util-linux" ,util-linux)))
    (home-page "https://www.scribus.net")
    (synopsis "Desktop publishing and page layout program")
    (description
     "Scribus is a @dfn{desktop publishing} (DTP) application and can be used
for many tasks; from brochure design to newspapers, magazines, newsletters and
posters to technical documentation.  Scribus supports professional DTP
features, such as CMYK color and a color management system to soft proof
images for high quality color printing, flexible PDF creation options,
Encapsulated PostScript import/export and creation of four color separations,
import of EPS/PS and SVG as native vector graphics, Unicode text including
right to left scripts such as Arabic and Hebrew via freetype.")
    (license license:gpl2+)))


code:
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 Chris Marusich <cmmarusich@gmail.com>
;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;;
;;; 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 scsi)
  #:use-module ((guix licenses)
                #:select (gpl2+ bsd-2 bsd-3))
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix build-system gnu))

(define-public sg3-utils
  (package
    (name "sg3-utils")
    (version "1.44")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://sg.danny.cz/sg/p/sg3_utils-"
                                  version ".tar.xz"))
              (sha256
               (base32
                "01avlgrbxlij8spish4i69ji1m49biz4mbayzzc2qx0hcl8ar56a"))))
    (build-system gnu-build-system)
    (home-page "http://sg.danny.cz/sg/sg3_utils.html")
    (synopsis "SCSI device utilities")
    (description
     "sg3-utils is a collection of utilities for devices that use the Small
Computer System Interface (@dfn{SCSI}) command set.  It includes utilities to
read data from, write data to, control, modify, and query the state of SCSI
devices.

For example, this package provides command-line tools to:
@itemize
@item copy data based on @code{dd} syntax and semantics (called @command{sg_dd},
@command{sgp_dd}, and @command{sgm_dd})
@item check @code{INQUIRY} data and @code{VPD pages} (@command{sg_inq})
@item check mode and log pages (@command{sginfo}, @command{sg_modes}, and
@command{sg_logs})
@item spin up and down disks (@command{sg_start})
@item do self-tests (@code{sg_senddiag})
@item parse sense data (@code{sg_decode_sense})
@item and perform various other functions.
@end itemize

In addition, this package includes a library, called libsgutils, which can be
used in C and C++ programs to interact with SCSI devices.")
    ;; See README: "All utilities and libraries have either a "2 clause" BSD
    ;;   license or are "GPL-2ed". [...] That BSD license was updated from the
    ;;   "3 clause" to the newer "2 clause" version on 20180119. To save space
    ;;   various source code files refer to a file called "BSD_LICENSE" [...]."
    ;; Some files (like sg_compare_and_write.c) retain their 3-clause headers!
    (license (list gpl2+ bsd-2 bsd-3))))


code:
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 David Craven <david@craven.ch>
;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;;
;;; 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 sdcc)
  #:use-module (gnu packages bison)
  #:use-module (gnu packages boost)
  #:use-module (gnu packages flex)
  #:use-module (gnu packages python)
  #:use-module (gnu packages texinfo)
  #:use-module (guix build-system gnu)
  #:use-module (guix download)
  #:use-module (guix packages)
  #:use-module ((guix licenses) #:prefix license:))

(define-public sdcc
  (package
    (name "sdcc")
    (version "3.7.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "mirror://sourceforge/sdcc/sdcc"
                    "/" version "/sdcc-src-" version ".tar.bz2"))
              (sha256
               (base32
                "13llvx0j3v5qa7qd4fh7nix4j3alpd3ccprxvx163c4q8q4lfkc5"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("bison" ,bison)
       ("boost" ,boost)
       ("flex" ,flex)
       ("python-2" ,python-2)
       ("texinfo" ,texinfo)))
    (arguments
     `(;; gputils is required for PIC ports
       #:configure-flags
       '("--disable-pic14-port" "--disable-pic16-port" "--enable-ucsim")
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-makefile
           (lambda _
             (substitute* (find-files "." "(\\.mk$|\\.in$)")
               (("/bin/sh") (which "sh")))
             #t)))))
    (home-page "http://sdcc.sourceforge.net")
    (synopsis "Small devices C compiler")
    (description "SDCC is a retargetable, optimizing Standard C compiler suite
that targets the Intel MCS51-based microprocessors (8031, 8032, 8051, 8052, ...),
Maxim (formerly Dallas) DS80C390 variants, Freescale (formerly Motorola)
HC08-based (hc08, s08), Zilog Z80-based MCUs (z80, z180, gbz80, Rabbit
2000/3000, Rabbit 3000A, TLCS-90) and STMicroelectronics STM8.
Work is in progress on supporting the Microchip PIC16 and PIC18 targets.
It can be retargeted for other microprocessors.")
    (license license:gpl2+)))


code:
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2015, 2017 David Thompson <dthompson2@worcester.edu>
;;; Copyright © 2014 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2015, 2017 Sou Bunnbu <iyzsong@member.fsf.org>
;;; Copyright © 2015 Alex Kost <alezost@gmail.com>
;;; Copyright © 2016, 2017 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2017 Rutger Helling <rhelling@mykolab.com>
;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; 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 sdl)
  #:use-module (ice-9 match)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-26)
  #:use-module (gnu packages)
  #:use-module ((guix licenses) #:hide (freetype))
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix utils)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system haskell)
  #:use-module (guix build-system trivial)
  #:use-module (gnu packages audio)
  #:use-module (gnu packages fcitx)
  #:use-module (gnu packages fontutils)
  #:use-module (gnu packages freedesktop)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages guile)
  #:use-module (gnu packages haskell)
  #:use-module (gnu packages ibus)
  #:use-module (gnu packages image)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages mp3)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages pulseaudio)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages xdisorg)
  #:use-module (gnu packages xiph)
  #:use-module (gnu packages xorg)
  #:export (sdl-union))

(define-public sdl
  (package
    (name "sdl")
    (version "1.2.15")
    (source (origin
             (method url-fetch)
             (uri
              (string-append "https://libsdl.org/release/SDL-"
                             version ".tar.gz"))
             (sha256
              (base32
               "005d993xcac8236fpvd1iawkz4wqjybkpn8dbwaliqz5jfkidlyn"))
             (patches (search-patches "sdl-libx11-1.6.patch"))))
    (build-system gnu-build-system)
    (arguments
     '(;; Explicitly link against shared libraries instead of dlopening them.
       ;; For X11, ALSA, and PulseAudio.
       ;; OpenGL library is still dlopened at runtime.
       #:configure-flags '("--disable-alsa-shared"
                           "--disable-pulseaudio-shared"
                           "--disable-x11-shared"
                           ;; Explicitly link with mesa.
                           ;; This add mesa to libsdl's RUNPATH, to make dlopen
                           ;; finding the libGL from mesa at runtime.
                           "LDFLAGS=-lGL")

       #:tests? #f)) ; no check target
    (propagated-inputs
     ;; SDL headers include X11 headers.
     `(("libx11" ,libx11)
       ("libcap" ,libcap))) ; 'libSDL.la' contain `-lcap'.
    (native-inputs `(("pkg-config" ,pkg-config)))
    (inputs `(("libxrandr" ,libxrandr)
              ("mesa" ,mesa)
              ("glu" ,glu)
              ("alsa-lib" ,alsa-lib)
              ("pulseaudio" ,pulseaudio)))
    (outputs '("out" "debug"))
    (synopsis "Cross platform game development library")
    (description "Simple DirectMedia Layer is a cross-platform development
library designed to provide low level access to audio, keyboard, mouse,
joystick, and graphics hardware.")
    (home-page "https://libsdl.org/")
    (license lgpl2.1)))

(define-public sdl2
  (package (inherit sdl)
    (name "sdl2")
    (version "2.0.8")
    (source (origin
             (method url-fetch)
             (uri
              (string-append "https://libsdl.org/release/SDL2-"
                             version ".tar.gz"))
             (sha256
              (base32
               "1v4js1gkr75hzbxzhwzzif0sf9g07234sd23x1vdaqc661bprizd"))))
    (arguments
     (substitute-keyword-arguments (package-arguments sdl)
       ((#:configure-flags flags)
        `(append '("--disable-wayland-shared")
                 ,flags))))
    (inputs
     ;; SDL2 needs to be built with ibus support otherwise some systems
     ;; experience a bug where input events are doubled.
     ;;
     ;; For more information, see: https://dev.solus-project.com/T1721
     (append `(("dbus" ,dbus)
               ("fcitx" ,fcitx) ; helps with CJK input
               ("glib" ,glib)
               ("ibus" ,ibus)
               ("libxkbcommon" ,libxkbcommon)
               ("wayland" ,wayland)
               ("wayland-protocols" ,wayland-protocols))
             (package-inputs sdl)))
    (license bsd-3)))

(define-public libmikmod
  (package
    (name "libmikmod")
    (version "3.3.11.1")
    (source (origin
             (method url-fetch)
             (uri (list
                   (string-append "mirror://sourceforge/mikmod/libmikmod/"
                                  version "/libmikmod-" version ".tar.gz")
                   ;; Older versions are sometimes moved to:
                   (string-append "mirror://sourceforge/mikmod/"
                                  "outdated_versions/libmikmod/"
                                  version "/libmikmod-" version ".tar.gz")))
             (sha256
              (base32
               "06bdnhb0l81srdzg6gn2v2ydhhaazza7rshrcj3q8dpqr3gn97dd"))))
    (build-system gnu-build-system)
    (arguments
     ;; By default, libmikmod tries to dlopen libasound etc., which won't work
     ;; unless the right libalsa happens to be in $LD_LIBRARY_PATH.  Pass
     ;; '--disable-dl' to avoid that.
     '(#:configure-flags '("--disable-dl")))
    (synopsis "Library for module sound formats")
    (description
     "MikMod is able to play a wide range of module formats, as well as
digital sound files.  It can take advantage of particular features of your
system, such as sound redirection over the network.")
    (license lgpl2.1)
    (home-page "http://mikmod.sourceforge.net/")))

(define-public sdl-gfx
  (package
    (name "sdl-gfx")
    (version "2.0.26")
    (source (origin
              (method url-fetch)
              (uri
               (string-append "http://www.ferzkopp.net/Software/SDL_gfx-2.0/SDL_gfx-"
                              version ".tar.gz"))
              (sha256
               (base32
                "0ijljhs0v99dj6y27hc10z6qchyp8gdp4199y6jzngy6dzxlzsvw"))))
    (build-system gnu-build-system)
    (outputs '("out" "debug"))
    (arguments
     `(,@(if (any (cute string-prefix? <> (or (%current-system)
                                              (%current-target-system)))
                  '("x86_64" "i686"))
        ;; mmx is supported only on Intel processors.
        '()
        '(#:configure-flags '("--disable-mmx")))))
    (propagated-inputs `(("sdl" ,sdl)))
    (synopsis "SDL graphics primitives library")
    (description "SDL_gfx provides graphics drawing primitives, rotozoom and
other supporting functions for SDL.")
    (home-page "http://www.ferzkopp.net/joomla/software-mainmenu-14/4-ferzkopps-linux-software/19-sdlgfx")
    (license zlib)))

(define-public sdl-image
  (package
    (name "sdl-image")
    (version "1.2.12")
    (source (origin
             (method url-fetch)
             (uri
              (string-append "https://www.libsdl.org/projects/SDL_image/release/SDL_image-"
                             version ".tar.gz"))
             (sha256
              (base32
               "16an9slbb8ci7d89wakkmyfvp7c0cval8xw4hkg0842nhhlp540b"))))
    (build-system gnu-build-system)
    (outputs '("out" "debug"))
    (arguments
     ;; Explicitly link against shared libraries instead of dlopening them.
     '(#:configure-flags '("--disable-jpg-shared"
                           "--disable-png-shared"
                           "--disable-tif-shared"
                           "--disable-webp-shared")))
    (native-inputs `(("pkg-config" ,pkg-config)))
    ;; libjpeg, libpng, and libtiff are propagated inputs because the
    ;; SDL_image headers include the headers of these libraries.  SDL is a
    ;; propagated input because the pkg-config file refers to SDL's pkg-config
    ;; file.
    (propagated-inputs `(("sdl" ,sdl)
                         ("libjpeg" ,libjpeg)
                         ("libpng" ,libpng)
                         ("libtiff" ,libtiff)
                         ("libwebp" ,libwebp)))
    (synopsis "SDL image loading library")
    (description "SDL_image is an image file loading library for SDL that
supports the following formats: BMP, GIF, JPEG, LBM, PCX, PNG, PNM, TGA, TIFF,
WEBP, XCF, XPM, and XV.")
    (home-page "https://www.libsdl.org/projects/SDL_image/")
    (license zlib)))

(define-public sdl-mixer
  (package
    (name "sdl-mixer")
    (version "1.2.12")
    (source (origin
              (method url-fetch)
              (uri
               (string-append "https://www.libsdl.org/projects/SDL_mixer/release/SDL_mixer-"
                              version ".tar.gz"))
              (sha256
               (base32
                "0alrhqgm40p4c92s26mimg9cm1y7rzr6m0p49687jxd9g6130i0n"))))
    (build-system gnu-build-system)
    (outputs '("out" "debug"))
    ;; no check target
    ;; use libmad instead of smpeg
    ;; explicitly link against shared libraries instead of dlopening them
    (arguments `(#:tests? #f
                 #:configure-flags '("--enable-music-mp3-mad-gpl"
                                     "--disable-music-mod-shared"
                                     "--disable-music-fluidsynth-shared"
                                     "--disable-music-ogg-shared"
                                     "--disable-music-flac-shared"
                                     "--disable-music-mp3-shared")))
    (inputs `(("libvorbis" ,libvorbis)
              ("libflac" ,flac)
              ("libmad" ,libmad)
              ("libmikmod" ,libmikmod)
              ("libmodplug" ,libmodplug)))
    ;; FIXME: Add libfluidsynth
    (propagated-inputs `(("sdl" ,sdl)))
    (synopsis "SDL multi-channel audio mixer library")
    (description "SDL_mixer is a multi-channel audio mixer library for SDL.
It supports any number of simultaneously playing channels of 16 bit stereo
audio, plus a single channel of music.  Supported format include FLAC, MOD,
MIDI, Ogg Vorbis, and MP3.")
    (home-page "https://www.libsdl.org/projects/SDL_mixer/")
    (license zlib)))

(define-public sdl-net
  (package
    (name "sdl-net")
    (version "1.2.8")
    (source (origin
              (method url-fetch)
              (uri
               (string-append "https://www.libsdl.org/projects/SDL_net/release/SDL_net-"
                              version ".tar.gz"))
              (sha256
               (base32
                "1d5c9xqlf4s1c01gzv6cxmg0r621pq9kfgxcg3197xw4p25pljjz"))))
    (build-system gnu-build-system)
    (propagated-inputs `(("sdl" ,sdl)))
    (native-inputs `(("pkg-config" ,pkg-config)))
    (outputs '("out" "debug"))
    (synopsis "SDL networking library")
    (description "SDL_net is a small, cross-platform networking library for
SDL.")
    (home-page "https://www.libsdl.org/projects/SDL_net/")
    (license zlib)))

(define-public sdl-ttf
  (package
    (name "sdl-ttf")
    (version "2.0.11")
    (source (origin
             (method url-fetch)
             (uri
              (string-append "https://www.libsdl.org/projects/SDL_ttf/release/SDL_ttf-"
                             version ".tar.gz"))
             (sha256
              (base32
               "1dydxd4f5kb1288i5n5568kdk2q7f8mqjr7i7sd33nplxjaxhk3j"))))
    (build-system gnu-build-system)
    (propagated-inputs `(("sdl" ,sdl)))
    (inputs `(("freetype" ,freetype)
              ("mesa" ,mesa)))
    (native-inputs `(("pkg-config" ,pkg-config)))
    (outputs '("out" "debug"))
    (synopsis "SDL TrueType font library")
    (description "SDL_ttf is a TrueType font rendering library for SDL.")
    (home-page "https://www.libsdl.org/projects/SDL_ttf/")
    (license zlib)))

(define* (sdl-union #:optional (packages (list sdl sdl-gfx sdl-net sdl-ttf
                                               sdl-image sdl-mixer)))
  "Return 'sdl-union' package which is a union of PACKAGES.
If PACKAGES are not specified, all SDL packages are used."
  (package
    (name "sdl-union")
    (version (package-version sdl))
    (source #f)
    (build-system trivial-build-system)
    (arguments
     '(#:modules ((guix build union))
       #:builder (begin
                   (use-modules (ice-9 match)
                                (guix build union))
                   (match %build-inputs
                     (((names . directories) ...)
                      (union-build (assoc-ref %outputs "out")
                                   directories)
                      #t)))))
    (inputs (map (lambda (package)
                   (list (package-name package) package))
                 packages))
    (synopsis "Union of SDL libraries")
    (description
     "A union of SDL and its extension libraries.  A union is required because
sdl-config assumes that all of the headers and libraries are in the same
directory.")
    (home-page (package-home-page sdl))
    (license (package-license sdl))))

(define (propagated-inputs-with-sdl2 package)
  "Replace the \"sdl\" propagated input of PACKAGE with SDL2."
  (map (match-lambda
         (("sdl" _)
          `("sdl2" ,sdl2))
         (other other))
       (package-propagated-inputs package)))

(define-public sdl2-image
  (package (inherit sdl-image)
    (name "sdl2-image")
    (version "2.0.3")
    (source (origin
              (method url-fetch)
              (uri
               (string-append "https://www.libsdl.org/projects/SDL_image/release/SDL2_image-"
                              version ".tar.gz"))
              (sha256
               (base32
                "0s13dmakn21q6yw8avl67d4zkxzl1wap6l5nwf6cvzrmlxfw441m"))))
    (propagated-inputs
     (propagated-inputs-with-sdl2 sdl-image))))

(define-public sdl2-mixer
  (package (inherit sdl-mixer)
    (name "sdl2-mixer")
    (version "2.0.2")
    (source (origin
              (method url-fetch)
              (uri
               (string-append "http://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-"
                              version ".tar.gz"))
              (modules '((guix build utils)))
              (snippet '(begin
                          ;; Remove bundled libraries.
                          (delete-file-recursively "external")
                          #t))
              (sha256
               (base32
                "1fw3kkqi5346ai5if4pxrcbhs5c4vv3a4smgz6fl6kyaxwkmwqaf"))))
    (propagated-inputs
     (propagated-inputs-with-sdl2 sdl-mixer))))

(define-public sdl2-ttf
  (package (inherit sdl-ttf)
    (name "sdl2-ttf")
    (version "2.0.14")
    (source (origin
             (method url-fetch)
             (uri
              (string-append "https://www.libsdl.org/projects/SDL_ttf/release/SDL2_ttf-"
                             version ".tar.gz"))
             (modules '((guix build utils)))
             (snippet (begin
                        ;; Remove bundled libraries.
                        '(delete-file-recursively "external")
                        #t))
             (sha256
              (base32
               "0xljwcpvd2knrjdfag5b257xqayplz55mqlszrqp0kpnphh5xnrl"))))
    (propagated-inputs
     (propagated-inputs-with-sdl2 sdl-ttf))))

(define-public guile-sdl
  (package
    (name "guile-sdl")
    (version "0.5.2")
    (source (origin
              (method url-fetch)
              (uri
               (string-append "mirror://gnu/guile-sdl/guile-sdl-"
                              version ".tar.xz"))
              (sha256
               (base32
                "0cjgs012a9922hn6xqwj66w6qmfs3nycnm56hyykx5n3g5p7ag01"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ;; Required by test suite.
       ("xorg-server" ,xorg-server)
       ("libjpeg" ,libjpeg)))
    (inputs
     `(("guile" ,guile-2.2)
       ("sdl-union" ,(sdl-union))))
    (arguments
     '(#:configure-flags
       (list (string-append "--with-sdl-prefix="
                            (assoc-ref %build-inputs "sdl-union")))
       #:modules ((ice-9 popen)
                  (guix build utils)
                  (guix build gnu-build-system))

       #:parallel-build? #f ; parallel build fails

       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'fix-env-and-patch
           (lambda* (#:key inputs #:allow-other-keys)
             (setenv "GUILE_AUTO_COMPILE" "0")
             ;; SDL_image needs to dlopen libjpeg in the test suite.
             (setenv "LD_LIBRARY_PATH"
                     (string-append (assoc-ref inputs "libjpeg") "/lib"))

             ;; Change the site directory /site/X.Y like Guile expects.
             (substitute* "build-aux/guile-baux/re-prefixed-site-dirs"
               (("\"/site\"")
                (let ((effective
                       (read
                        (open-pipe* OPEN_READ
                                    "guile" "-c"
                                    "(write (effective-version))"))))
                  (string-append "\"/site/" effective "\""))))

             ;; Skip tests that rely on sound support, which is unavailable in
             ;; the build environment.
             (substitute* "test/Makefile.in"
               (("HAVE_MIXER = .*$")
                "HAVE_MIXER = 0\n"))
             #t))
         (add-before 'check 'start-xorg-server
           (lambda* (#:key inputs #:allow-other-keys)
             ;; The test suite requires a running X server.
             (system (format #f "~a/bin/Xvfb :1 &"
                             (assoc-ref inputs "xorg-server")))
             (setenv "DISPLAY" ":1")
             #t))
         (add-before 'check 'skip-cursor-test
           (lambda _
             ;; XXX: This test sometimes enters an endless loop, and sometimes
             ;; crashes with:
             ;;   guile: xcb_io.c:147: append_pending_request: Assertion `!xcb_xlib_unknown_seq_number' failed.
             ;; Skip it.
             (substitute* "test/cursor.scm"
               (("\\(SDL:init .*" all)
                (string-append "(exit 77)  ;" all "\n")))
             #t)))))
    (synopsis "Guile interface for SDL (Simple DirectMedia Layer)")
    (description "Guile-SDL is a set of bindings to the Simple DirectMedia
Layer (SDL).  With them, Guile programmers can have easy access to graphics,
sound and device input (keyboards, joysticks, mice, etc.).")
    (home-page "https://www.gnu.org/software/guile-sdl/")
    (license gpl3+)))

(define-public guile-sdl2
  (package
    (name "guile-sdl2")
    (version "0.3.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://files.dthompson.us/guile-sdl2/guile-sdl2-"
                    version ".tar.gz"))
              (sha256
               (base32
                "0iq6fw213qw292fxhrsg40al7hqyqyh4qpgl0x9rh08y949h2w97"))))
    (build-system gnu-build-system)
    (arguments
     '(#:make-flags '("GUILE_AUTO_COMPILE=0")
       #:configure-flags
       (list (string-append "--with-libsdl2-prefix="
                            (assoc-ref %build-inputs "sdl2"))
             (string-append "--with-libsdl2-image-prefix="
                            (assoc-ref %build-inputs "sdl2-image"))
             (string-append "--with-libsdl2-ttf-prefix="
                            (assoc-ref %build-inputs "sdl2-ttf"))
             (string-append "--with-libsdl2-mixer-prefix="
                            (assoc-ref %build-inputs "sdl2-mixer")))))
    (native-inputs
     `(("guile" ,guile-2.2)
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("sdl2" ,sdl2)
       ("sdl2-image" ,sdl2-image)
       ("sdl2-mixer" ,sdl2-mixer)
       ("sdl2-ttf" ,sdl2-ttf)))
    (synopsis "Guile bindings for SDL2")
    (home-page "https://dthompson.us/projects/guile-sdl2.html")
    (description
     "Guile-SDL2 provides Guile Scheme bindings for the SDL2 C shared library.
The bindings are written in pure Scheme using Guile's foreign function
interface.")
    (license lgpl3+)))

(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-text" ,ghc-text)
       ("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 bsd-3)))

(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 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)
       ("ghc-text" ,ghc-text)
       ("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 expat)))