gnu/packages/emulators.scm

   1 ;;; GNU Guix --- Functional package management for GNU
   2 ;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
   3 ;;; Copyright © 2015 Paul van der Walt <paul@denknerd.org>
   4 ;;; Copyright © 2015, 2016 Sou Bunnbu <iyzsong@gmail.com>
   5 ;;; Copyright © 2015, 2016 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
   6 ;;; Copyright © 2015, 2018 David Thompson <dthompson2@worcester.edu>
   7 ;;; Copyright © 2016 Manolis Fragkiskos Ragkousis <manolis837@gmail.com>
   8 ;;; Copyright © 2016, 2017, 2018 Efraim Flashner <efraim@flashner.co.il>
   9 ;;; Copyright © 2017 Nicolas Goaziou <mail@nicolasgoaziou.fr>
  10 ;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
  11 ;;; Copyright © 2017, 2018 Rutger Helling <rhelling@mykolab.com>
  12 ;;;
  13 ;;; This file is part of GNU Guix.
  14 ;;;
  15 ;;; GNU Guix is free software; you can redistribute it and/or modify it
  16 ;;; under the terms of the GNU General Public License as published by
  17 ;;; the Free Software Foundation; either version 3 of the License, or (at
  18 ;;; your option) any later version.
  19 ;;;
  20 ;;; GNU Guix is distributed in the hope that it will be useful, but
  21 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
  22 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 ;;; GNU General Public License for more details.
  24 ;;;
  25 ;;; You should have received a copy of the GNU General Public License
  26 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
  27
  28 (define-module (gnu packages emulators)
  29   #:use-module ((guix licenses) #:prefix license:)
  30   #:use-module (guix packages)
  31   #:use-module (guix download)
  32   #:use-module (guix git-download)
  33   #:use-module (guix svn-download)
  34   #:use-module (gnu packages)
  35   #:use-module (gnu packages algebra)
  36   #:use-module (gnu packages audio)
  37   #:use-module (gnu packages autotools)
  38   #:use-module (gnu packages base)
  39   #:use-module (gnu packages boost)
  40   #:use-module (gnu packages backup)
  41   #:use-module (gnu packages compression)
  42   #:use-module (gnu packages curl)
  43   #:use-module (gnu packages databases)
  44   #:use-module (gnu packages fonts)
  45   #:use-module (gnu packages fontutils)
  46   #:use-module (gnu packages freedesktop)
  47   #:use-module (gnu packages game-development)
  48   #:use-module (gnu packages gettext)
  49   #:use-module (gnu packages gl)
  50   #:use-module (gnu packages glib)
  51   #:use-module (gnu packages gtk)
  52   #:use-module (gnu packages image)
  53   #:use-module (gnu packages imagemagick)
  54   #:use-module (gnu packages libedit)
  55   #:use-module (gnu packages libusb)
  56   #:use-module (gnu packages linux)
  57   #:use-module (gnu packages ncurses)
  58   #:use-module (gnu packages pkg-config)
  59   #:use-module (gnu packages pulseaudio)
  60   #:use-module (gnu packages python)
  61   #:use-module (gnu packages qt)
  62   #:use-module (gnu packages sdl)
  63   #:use-module (gnu packages tls)
  64   #:use-module (gnu packages upnp)
  65   #:use-module (gnu packages video)
  66   #:use-module (gnu packages vulkan)
  67   #:use-module (gnu packages wxwidgets)
  68   #:use-module (gnu packages xdisorg)
  69   #:use-module (gnu packages xiph)
  70   #:use-module (gnu packages xml)
  71   #:use-module (gnu packages xorg)
  72   #:use-module (guix build-system cmake)
  73   #:use-module (guix build-system gnu))
  74
  75 (define-public desmume
  76   (package
  77     (name "desmume")
  78     (version "0.9.11")
  79     (source
  80      (origin
  81        (method url-fetch)
  82        (uri (string-append
  83              "mirror://sourceforge/desmume/desmume/"
  84              version "/desmume-" version ".tar.gz"))
  85        (sha256
  86         (base32
  87          "15l8wdw3q61fniy3h93d84dnm6s4pyadvh95a0j6d580rjk4pcrs"))))
  88     (build-system gnu-build-system)
  89     (arguments
  90      ;; Enable support for WiFi and microphone.
  91      `(#:configure-flags '("--enable-wifi"
  92                            "--enable-openal")))
  93     (native-inputs
  94      `(("pkg-config" ,pkg-config)
  95        ("intltool" ,intltool)))
  96     (inputs
  97      `(("zlib" ,zlib)
  98        ("sdl" ,sdl)
  99        ("glib" ,glib)
 100        ("gtk+" ,gtk+-2)
 101        ("glu" ,glu)))
 102     (home-page "http://desmume.org/")
 103     (synopsis "Nintendo DS emulator")
 104     (description
 105      "DeSmuME is an emulator for the Nintendo DS handheld gaming console.")
 106     (license license:gpl2)))
 107
 108 ;; Building from recent Git because the official 5.0 release no longer builds.
 109 (define-public dolphin-emu
 110   (let ((commit "d04b179111f8d863f360839474cb82c766f762b8")
 111         (revision "0"))
 112     (package
 113       (name "dolphin-emu")
 114       (version (git-version "5.0" revision commit))
 115       (source
 116        (origin
 117          (method git-fetch)
 118          (uri (git-reference
 119                (url "https://github.com/dolphin-emu/dolphin.git")
 120                (commit commit)))
 121          (file-name (git-file-name name version))
 122          (modules '((guix build utils)))
 123          (snippet
 124           '(begin
 125              ;; Remove external stuff we don't need.
 126              (for-each (lambda (dir)
 127                          (delete-file-recursively
 128                            (string-append "Externals/" dir)))
 129                        '("LZO" "OpenAL" "Qt" "SFML" "SOIL" "curl" "ffmpeg"
 130                          "gettext" "hidapi" "libpng" "libusb" "mbedtls"
 131                          "miniupnpc" "wxWidgets3" "zlib"))
 132              ;; Clean up source.
 133              (for-each delete-file (find-files "." ".*\\.(bin|dsy|exe|jar|rar)$"))
 134              #t))
 135          (sha256
 136           (base32
 137            "0g725wmhlim73zrhi47wmr1bmplpy4b7sbimd5pm8xpfhj5nm10l"))))
 138       (build-system cmake-build-system)
 139       (arguments
 140        '(#:tests? #f
 141          ;; The FindGTK2 cmake script only checks hardcoded directories for
 142          ;; glib/gtk headers.
 143
 144          #:phases
 145          (modify-phases %standard-phases
 146            (add-before 'configure 'generate-fonts&hardcore-libvulkan-path
 147              (lambda* (#:key inputs outputs #:allow-other-keys)
 148                (let ((fontfile
 149                       (string-append (assoc-ref inputs "font-wqy-microhei")
 150                                      "/share/fonts/truetype/wqy-microhei.ttc"))
 151                      (libvulkan
 152                       (string-append (assoc-ref inputs "vulkan-icd-loader")
 153                                      "/lib/libvulkan.so")))
 154                  (chdir "docs")
 155                  (invoke "bash" "-c" "g++ -O2 -std=c++11 $(freetype-config \
 156 --cflags --libs) gc-font-tool.cpp -o gc-font-tool")
 157                  (invoke "./gc-font-tool" "a" fontfile "font_western.bin")
 158                  (invoke "./gc-font-tool" "s" fontfile "font_japanese.bin")
 159                  (copy-file "font_japanese.bin" "../Data/Sys/GC/font_japanese.bin")
 160                  (copy-file "font_western.bin" "../Data/Sys/GC/font_western.bin")
 161                  (chdir "..")
 162                  (substitute* "Source/Core/VideoBackends/Vulkan/VulkanLoader.cpp"
 163                               (("libvulkan.so") libvulkan))
 164                  #t))))
 165
 166          #:configure-flags
 167          (list (string-append "-DGTK2_GDKCONFIG_INCLUDE_DIR="
 168                               (assoc-ref %build-inputs "gtk+")
 169                               "/lib/gtk-2.0/include")
 170                (string-append "-DGTK2_GLIBCONFIG_INCLUDE_DIR="
 171                               (assoc-ref %build-inputs "glib")
 172                               "/lib/glib-2.0/include")
 173                (string-append "-DX11_INCLUDE_DIR="
 174                               (assoc-ref %build-inputs "libx11")
 175                               "/include")
 176                (string-append "-DX11_LIBRARIES="
 177                               (assoc-ref %build-inputs "libx11")
 178                               "/lib/libX11.so")
 179                "-DX11_FOUND=1")))
 180       (native-inputs
 181        `(("pkg-config" ,pkg-config)
 182          ("gettext" ,gnu-gettext)))
 183       (inputs
 184        `(("alsa-lib" ,alsa-lib)
 185          ("ao" ,ao)
 186          ("bluez" ,bluez)
 187          ("curl" ,curl)
 188          ("eudev" ,eudev)
 189          ("ffmpeg" ,ffmpeg)
 190          ("font-wqy-microhei" ,font-wqy-microhei)
 191          ("freetype" ,freetype)
 192          ("glew" ,glew)
 193          ("glib" ,glib)
 194          ("glu" ,glu)
 195          ("gtk+" ,gtk+-2)
 196          ("hidapi" ,hidapi)
 197          ("libevdev" ,libevdev)
 198          ("libpng" ,libpng)
 199          ("libusb" ,libusb)
 200          ("libx11" ,libx11)
 201          ("libxi" ,libxi)
 202          ("libxrandr" ,libxrandr)
 203          ("lzo" ,lzo)
 204          ("mbedtls-apache" ,mbedtls-apache)
 205          ("mesa" ,mesa)
 206          ("miniupnpc" ,miniupnpc)
 207          ("openal" ,openal)
 208          ("pulseaudio" ,pulseaudio)
 209          ("qtbase" ,qtbase)
 210          ("sdl2" ,sdl2)
 211          ("sfml" ,sfml)
 212          ("soil" ,soil)
 213          ("soundtouch" ,soundtouch)
 214          ("vulkan-icd-loader" ,vulkan-icd-loader)
 215          ("wxwidgets" ,wxwidgets-gtk2-3.1)
 216          ("zlib" ,zlib)))
 217       (home-page "https://dolphin-emu.org/")
 218       (synopsis "Nintendo Wii and GameCube emulator")
 219       (description
 220        "Dolphin is an emulator for two Nintendo video game consoles: the
 221 GameCube and the Wii.  It provides compatibility with all PC controllers,
 222 turbo speed, networked multiplayer, and graphical enhancements.")
 223       (supported-systems '("x86_64-linux" "aarch64-linux"))
 224       ; dolphin/Data/Sys/GC/font_*.bin: Licensed under ASL2.0.
 225       (license (list license:gpl2+ license:asl2.0 license:fdl1.2+)))))
 226
 227 (define-public dosbox
 228   (package
 229     (name "dosbox")
 230     (version "0.74.svn3947")
 231     (source (origin
 232               (method svn-fetch)
 233               (uri (svn-reference
 234                     (url "http://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk/")
 235                     (revision 3947)))
 236               (file-name (string-append name "-" version "-checkout"))
 237               ;; Use SVN head, since the last release (2010) is incompatible
 238               ;; with GCC 4.8+ (see
 239               ;; <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624976>).
 240               (sha256
 241                (base32
 242                 "1p918j6090d1nkvgq7ifvmn506zrdmyi32y7p3ms40d5ssqjg8fj"))))
 243     (build-system gnu-build-system)
 244     (arguments
 245      `(#:phases (modify-phases %standard-phases
 246                   (add-after
 247                    'unpack 'autogen.sh
 248                    (lambda _
 249                      (zero? (system* "sh" "autogen.sh")))))))
 250     (native-inputs
 251      `(("autoconf" ,autoconf)
 252        ("automake" ,automake)))
 253     (inputs
 254      `(("sdl" ,sdl)
 255        ("libpng" ,libpng)
 256        ("zlib" ,zlib)
 257        ("alsa-lib" ,alsa-lib)
 258        ("glu" ,glu)
 259        ("mesa" ,mesa)))
 260     (home-page "http://www.dosbox.com")
 261     (synopsis "X86 emulator with CGA/EGA/VGA/etc. graphics and sound")
 262     (description "DOSBox is a DOS-emulator that uses the SDL library.  DOSBox
 263 also emulates CPU:286/386 realmode/protected mode, Directory
 264 FileSystem/XMS/EMS, Tandy/Hercules/CGA/EGA/VGA/VESA graphics, a
 265 SoundBlaster/Gravis Ultra Sound card for excellent sound compatibility with
 266 older games.")
 267     (license license:gpl2+)))
 268
 269 (define-public emulation-station
 270   (let ((commit "646bede3d9ec0acf0ae378415edac136774a66c5"))
 271     (package
 272       (name "emulation-station")
 273       (version "2.0.1")
 274       (source (origin
 275                 (method git-fetch) ; no tarball available
 276                 (uri (git-reference
 277                       (url "https://github.com/Aloshi/EmulationStation.git")
 278                       (commit commit))) ; no version tag
 279                 (file-name (string-append name "-" version "-checkout"))
 280                 (sha256
 281                  (base32
 282                   "0cm0sq2wri2l9cvab1l0g02za59q7klj0h3p028vr96n6njj4w9v"))))
 283       (build-system cmake-build-system)
 284       (arguments
 285        '(#:tests? #f)) ; no tests
 286       (inputs
 287        `(("alsa-lib" ,alsa-lib)
 288          ("boost" ,boost)
 289          ("curl" ,curl)
 290          ("eigin" ,eigen)
 291          ("freeimage" ,freeimage)
 292          ("freetype" ,freetype)
 293          ("mesa" ,mesa)
 294          ("sdl2" ,sdl2)))
 295       (synopsis "Video game console emulator front-end")
 296       (description "EmulationStation provides a graphical front-end to a large
 297 number of video game console emulators.  It features an interface that is
 298 usable with any game controller that has at least 4 buttons, theming support,
 299 and a game metadata scraper.")
 300       (home-page "http://www.emulationstation.org")
 301       (license license:expat))))
 302
 303 (define-public higan
 304   (package
 305     (name "higan")
 306     (version "106")
 307     (source
 308      (origin
 309        (method url-fetch)
 310        (uri (string-append
 311              "https://gitlab.com/higan/higan/repository/archive.tar.gz?ref=v"
 312              version))
 313        (file-name (string-append name "-" version ".tar.gz"))
 314        (sha256
 315         (base32 "0y42pra0dxzlbkyzcp3r8a39pji2bj3p9fl40425f60af2igr4rw"))
 316        (patches (search-patches "higan-remove-march-native-flag.patch"))))
 317     (build-system gnu-build-system)
 318     (native-inputs
 319      `(("pkg-config" ,pkg-config)))
 320     (inputs
 321      `(("alsa-lib" ,alsa-lib)
 322        ("ao" ,ao)
 323        ("eudev" ,eudev)
 324        ("gtk+" ,gtk+-2)
 325        ("gtksourceview-2" ,gtksourceview-2)
 326        ("libxv" ,libxv)
 327        ("mesa" ,mesa)
 328        ("openal" ,openal)
 329        ("pulseaudio" ,pulseaudio)
 330        ("sdl" ,sdl)))
 331     (arguments
 332      '(#:phases
 333        (let ((build-phase (assoc-ref %standard-phases 'build))
 334              (install-phase (assoc-ref %standard-phases 'install)))
 335          (modify-phases %standard-phases
 336            ;; The higan build system has no configure phase.
 337            (delete 'configure)
 338            (add-before 'build 'chdir-to-higan
 339              (lambda _
 340                (chdir "higan")))
 341            (add-before 'install 'create-/share/applications
 342              (lambda* (#:key outputs #:allow-other-keys)
 343                (let ((out (assoc-ref outputs "out")))
 344                  ;; It seems the author forgot to do this in the Makefile.
 345                  (mkdir-p (string-append out "/share/applications")))))
 346            (add-after 'install 'chdir-to-icarus
 347              (lambda _
 348                (chdir "../icarus")))
 349            (add-after 'chdir-to-icarus 'build-icarus build-phase)
 350            (add-after 'build-icarus 'install-icarus install-phase)
 351            (add-after 'install-icarus 'wrap-higan-executable
 352              (lambda* (#:key inputs outputs #:allow-other-keys)
 353                (let* ((out (assoc-ref outputs "out"))
 354                       (bin (string-append out "/bin"))
 355                       (higan (string-append bin "/higan"))
 356                       (higan-original (string-append higan "-original"))
 357                       (bash (string-append (assoc-ref inputs "bash")
 358                                            "/bin/bash"))
 359                       (coreutils (assoc-ref inputs "coreutils"))
 360                       (mkdir (string-append coreutils "/bin/mkdir"))
 361                       (cp (string-append coreutils "/bin/cp"))
 362                       (cp-r (string-append cp " -r --no-preserve=mode")))
 363                  ;; First, have the executable make sure ~/.local/share/higan
 364                  ;; contains up to date files.  Higan insists on looking there
 365                  ;; for these data files.
 366                  (rename-file higan higan-original)
 367                  (with-output-to-file higan
 368                    (lambda ()
 369                      (display
 370                       (string-append
 371                        "#!" bash "\n"
 372                        ;; higan doesn't respect $XDG_DATA_HOME
 373                        mkdir " -p ~/.local/share\n"
 374                        cp-r " " out "/share/higan ~/.local/share\n"
 375                        "exec " higan-original))))
 376                  (chmod higan #o555)
 377                  ;; Second, make sure higan will find icarus in PATH.
 378                  (wrap-program higan
 379                    `("PATH" ":" prefix (,bin))))))))
 380        #:make-flags
 381        (list "compiler=g++"
 382              (string-append "prefix=" (assoc-ref %outputs "out")))
 383        ;; There is no test suite.
 384        #:tests? #f))
 385     (home-page "http://byuu.org/emulation/higan/")
 386     (synopsis "Nintendo multi-system emulator")
 387     (description
 388      "higan (formerly bsnes) is an emulator for multiple Nintendo video game
 389 consoles, including the Nintendo Entertainment System (NES/Famicom), Super
 390 Nintendo Entertainment System (SNES/Super Famicom), Game Boy, Game Boy
 391 Color (GBC), and Game Boy Advance (GBA).  It also supports the subsystems
 392 Super Game Boy, BS-X Satellaview, and Sufami Turbo.")
 393     ;; As noted in these files among more:
 394     ;; - icarus/icarus.cpp
 395     ;; - higan/emulator/emulator.hpp
 396     (license license:gpl3)))
 397
 398 (define-public mgba
 399   (package
 400     (name "mgba")
 401     (version "0.6.1")
 402     (source (origin
 403               (method url-fetch)
 404               (uri (string-append "https://github.com/mgba-emu/mgba/archive/"
 405                                   version ".tar.gz"))
 406               (file-name (string-append name "-" version ".tar.gz"))
 407               (sha256
 408                (base32
 409                 "0xmq1q1j71hnpd49wm91cqq8w5zdhb921cm17jchp4qjmaqgwy3w"))
 410               (modules '((guix build utils)))
 411               (snippet
 412                ;; Make sure we don't use the bundled software.
 413                '(for-each
 414                  (lambda (subdir)
 415                    (let ((lib-subdir (string-append "src/third-party/" subdir)))
 416                      (delete-file-recursively lib-subdir)))
 417                  '("libpng" "lzma" "sqlite3" "zlib")))))
 418     (build-system cmake-build-system)
 419     (arguments
 420      `(#:tests? #f                      ;no "test" target
 421        #:configure-flags
 422        (list "-DUSE_LZMA=OFF"           ;do not use bundled LZMA
 423              "-DUSE_LIBZIP=OFF"         ;use "zlib" instead
 424              (string-append "-DCMAKE_INSTALL_LIBDIR="
 425                             (assoc-ref %outputs "out") "/lib"))))
 426     (native-inputs `(("pkg-config" ,pkg-config)))
 427     (inputs `(("ffmpeg" ,ffmpeg)
 428               ("imagemagick" ,imagemagick)
 429               ("libedit" ,libedit)
 430               ("libepoxy" ,libepoxy)
 431               ("libpng" ,libpng)
 432               ("mesa" ,mesa)
 433               ("minizip" ,minizip)
 434               ("ncurses" ,ncurses)
 435               ("qtbase" ,qtbase)
 436               ("qtmultimedia" ,qtmultimedia)
 437               ("qttools" ,qttools)
 438               ("sdl2" ,sdl2)
 439               ("sqlite" ,sqlite)
 440               ("zlib" ,zlib)))
 441     (home-page "https://mgba.io")
 442     (synopsis "Game Boy Advance emulator")
 443     (description
 444      "mGBA is an emulator for running Game Boy Advance games.  It aims to be
 445 faster and more accurate than many existing Game Boy Advance emulators, as
 446 well as adding features that other emulators lack.  It also supports Game Boy
 447 and Game Boy Color games.")
 448     ;; Code is mainly MPL 2.0. "blip_buf.c" is LGPL 2.1+ and "inih.c" is
 449     ;; BSD-3.
 450     (license (list license:mpl2.0 license:lgpl2.1+ license:bsd-3))))
 451
 452 (define-public mupen64plus-core
 453   (package
 454     (name "mupen64plus-core")
 455     (version "2.5")
 456     (source
 457      (origin
 458        (method url-fetch)
 459        (uri (string-append
 460              "https://github.com/mupen64plus/mupen64plus-core/archive/"
 461              version ".tar.gz"))
 462        (file-name (string-append name "-" version ".tar.gz"))
 463        (sha256
 464         (base32 "0dg2hksm5qni2hcha93k7n4fqr92888p946f7phb0ndschzfh9kk"))))
 465     (build-system gnu-build-system)
 466     (native-inputs
 467      `(("pkg-config" ,pkg-config)
 468        ("which" ,which)))
 469     (inputs
 470      `(("freetype" ,freetype)
 471        ("glu" ,glu)
 472        ("libpng" ,libpng)
 473        ("mesa" ,mesa)
 474        ("sdl2" ,sdl2)
 475        ("zlib" ,zlib)))
 476     (arguments
 477      '(#:phases
 478        (modify-phases %standard-phases
 479          ;; The mupen64plus build system has no configure phase.
 480          (delete 'configure)
 481          ;; Makefile is in a subdirectory.
 482          (add-before
 483           'build 'cd-to-project-dir
 484           (lambda _
 485             (chdir "projects/unix"))))
 486        #:make-flags (let ((out (assoc-ref %outputs "out")))
 487                       (list "all" (string-append "PREFIX=" out)))
 488        ;; There are no tests.
 489        #:tests? #f))
 490     ;; As per the Makefile (in projects/unix/Makefile):
 491     (supported-systems '("i686-linux" "x86_64-linux"))
 492     (home-page "http://www.mupen64plus.org/")
 493     (synopsis "Nintendo 64 emulator core library")
 494     (description
 495      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 496 which is capable of accurately playing many games.  This package contains the
 497 core library.")
 498     (license license:gpl2+)))
 499
 500 (define-public mupen64plus-audio-sdl
 501   (package
 502     (name "mupen64plus-audio-sdl")
 503     (version "2.5")
 504     (source
 505      (origin
 506        (method url-fetch)
 507        (uri (string-append
 508              "https://github.com/mupen64plus/mupen64plus-audio-sdl/archive/"
 509              version ".tar.gz"))
 510        (file-name (string-append name "-" version ".tar.gz"))
 511        (sha256
 512         (base32 "0ss6w92n2rpfnazhg9lbq0nvs3fqx93nliz3k3wjxdlx4dpi7h3a"))))
 513     (build-system gnu-build-system)
 514     (native-inputs
 515      `(("pkg-config" ,pkg-config)
 516        ("which" ,which)))
 517     (inputs
 518      `(("mupen64plus-core" ,mupen64plus-core)
 519        ("sdl2" ,sdl2)))
 520     (arguments
 521      '(#:phases
 522        (modify-phases %standard-phases
 523          ;; The mupen64plus build system has no configure phase.
 524          (delete 'configure)
 525          ;; Makefile is in a subdirectory.
 526          (add-before
 527           'build 'cd-to-project-dir
 528           (lambda _
 529             (chdir "projects/unix"))))
 530        #:make-flags
 531        (let ((out (assoc-ref %outputs "out"))
 532              (m64p (assoc-ref %build-inputs "mupen64plus-core")))
 533          (list "all"
 534                (string-append "PREFIX=" out)
 535                (string-append "APIDIR=" m64p "/include/mupen64plus")))
 536        ;; There are no tests.
 537        #:tests? #f))
 538     (home-page "http://www.mupen64plus.org/")
 539     (synopsis "Mupen64Plus SDL input plugin")
 540     (description
 541      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 542 which is capable of accurately playing many games.  This package contains the
 543 SDL audio plugin.")
 544     (license license:gpl2+)))
 545
 546 (define-public mupen64plus-input-sdl
 547   (package
 548     (name "mupen64plus-input-sdl")
 549     (version "2.5")
 550     (source
 551      (origin
 552        (method url-fetch)
 553        (uri (string-append
 554              "https://github.com/mupen64plus/mupen64plus-input-sdl/archive/"
 555              version ".tar.gz"))
 556        (file-name (string-append name "-" version ".tar.gz"))
 557        (sha256
 558         (base32 "11sj5dbalp2nrlmki34vy7wy28vc175pnnkdk65p8599hnyq37ri"))))
 559     (build-system gnu-build-system)
 560     (native-inputs
 561      `(("which" ,which)))
 562     (inputs
 563      `(("mupen64plus-core" ,mupen64plus-core)
 564        ("sdl2" ,sdl2)))
 565     (arguments
 566      '(#:phases
 567        (modify-phases %standard-phases
 568          ;; The mupen64plus build system has no configure phase.
 569          (delete 'configure)
 570          ;; Makefile is in a subdirectory.
 571          (add-before
 572           'build 'cd-to-project-dir
 573           (lambda _
 574             (chdir "projects/unix"))))
 575        #:make-flags
 576        (let ((out (assoc-ref %outputs "out"))
 577              (m64p (assoc-ref %build-inputs "mupen64plus-core")))
 578          (list "all"
 579                (string-append "PREFIX=" out)
 580                (string-append "APIDIR=" m64p "/include/mupen64plus")))
 581        ;; There are no tests.
 582        #:tests? #f))
 583     (home-page "http://www.mupen64plus.org/")
 584     (synopsis "Mupen64Plus SDL input plugin")
 585     (description
 586      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 587 which is capable of accurately playing many games.  This package contains the
 588 SDL input plugin.")
 589     (license license:gpl2+)))
 590
 591 (define-public mupen64plus-rsp-hle
 592   (package
 593     (name "mupen64plus-rsp-hle")
 594     (version "2.5")
 595     (source
 596      (origin
 597        (method url-fetch)
 598        (uri (string-append
 599              "https://github.com/mupen64plus/mupen64plus-rsp-hle/archive/"
 600              version ".tar.gz"))
 601        (file-name (string-append name "-" version ".tar.gz"))
 602        (sha256
 603         (base32 "15h7mgz6xd2zjzm6l3f96sbs8kwr3xvbwzgikhnka79m6c69hsxv"))))
 604     (build-system gnu-build-system)
 605     (inputs
 606      `(("mupen64plus-core" ,mupen64plus-core)))
 607     (arguments
 608      '(#:phases
 609        (modify-phases %standard-phases
 610          ;; The mupen64plus build system has no configure phase.
 611          (delete 'configure)
 612          ;; Makefile is in a subdirectory.
 613          (add-before
 614           'build 'cd-to-project-dir
 615           (lambda _
 616             (chdir "projects/unix"))))
 617        #:make-flags
 618        (let ((out (assoc-ref %outputs "out"))
 619              (m64p (assoc-ref %build-inputs "mupen64plus-core")))
 620          (list "all"
 621                (string-append "PREFIX=" out)
 622                (string-append "APIDIR=" m64p "/include/mupen64plus")))
 623        ;; There are no tests.
 624        #:tests? #f))
 625     (home-page "http://www.mupen64plus.org/")
 626     (synopsis "Mupen64Plus SDL input plugin")
 627     (description
 628      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 629 which is capable of accurately playing many games.  This package contains the
 630 high-level emulation (HLE) RSP processor plugin.")
 631     (license license:gpl2+)))
 632
 633 (define-public mupen64plus-rsp-z64
 634   (package
 635     (name "mupen64plus-rsp-z64")
 636     (version "2.0.0")
 637     (source
 638      (origin
 639        (method url-fetch)
 640        (uri (string-append
 641              "https://github.com/mupen64plus/mupen64plus-rsp-z64/archive/"
 642              version ".tar.gz"))
 643        (file-name (string-append name "-" version ".tar.gz"))
 644        (sha256
 645         (base32 "10jz1w2dhx5slhyk4m8mdqlpsd6cshchslr1fckb2ayzb1ls3ghi"))))
 646     (build-system gnu-build-system)
 647     (inputs
 648      `(("mupen64plus-core" ,mupen64plus-core)))
 649     (arguments
 650      '(#:phases
 651        (modify-phases %standard-phases
 652          ;; The mupen64plus build system has no configure phase.
 653          (delete 'configure)
 654          ;; Makefile is in a subdirectory.
 655          (add-before
 656           'build 'cd-to-project-dir
 657           (lambda _
 658             (chdir "projects/unix"))))
 659        #:make-flags
 660        (let ((out (assoc-ref %outputs "out"))
 661              (m64p (assoc-ref %build-inputs "mupen64plus-core")))
 662          (list "all"
 663                (string-append "PREFIX=" out)
 664                (string-append "APIDIR=" m64p "/include/mupen64plus")))
 665        ;; There are no tests.
 666        #:tests? #f))
 667     (home-page "http://www.mupen64plus.org/")
 668     (synopsis "Mupen64Plus SDL input plugin")
 669     (description
 670      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 671 which is capable of accurately playing many games.  This package contains the
 672 Z64 RSP processor plugin.")
 673     (license license:gpl2+)))
 674
 675 (define-public mupen64plus-video-arachnoid
 676   (package
 677     (name "mupen64plus-video-arachnoid")
 678     (version "2.0.0")
 679     (source
 680      (origin
 681        (method url-fetch)
 682        (uri (string-append
 683              "https://github.com/mupen64plus/mupen64plus-video-arachnoid/archive/"
 684              version ".tar.gz"))
 685        (file-name (string-append name "-" version ".tar.gz"))
 686        (sha256
 687         (base32 "0jjwf144rihznm4lnqbhgigxw664v3v32wy94adaa6imk8z6gslh"))))
 688     (build-system gnu-build-system)
 689     (native-inputs
 690      `(("pkg-config" ,pkg-config)
 691        ("which" ,which)))
 692     (inputs
 693      `(("mesa" ,mesa)
 694        ("mupen64plus-core" ,mupen64plus-core)))
 695     (arguments
 696      '(#:phases
 697        (modify-phases %standard-phases
 698          ;; The mupen64plus build system has no configure phase.
 699          (delete 'configure)
 700          ;; Makefile is in a subdirectory.
 701          (add-before
 702           'build 'cd-to-project-dir
 703           (lambda _
 704             (chdir "projects/unix"))))
 705        #:make-flags
 706        (let ((out (assoc-ref %outputs "out"))
 707              (m64p (assoc-ref %build-inputs "mupen64plus-core")))
 708          (list "all"
 709                (string-append "PREFIX=" out)
 710                (string-append "APIDIR=" m64p "/include/mupen64plus")))
 711        ;; There are no tests.
 712        #:tests? #f))
 713     (home-page "http://www.mupen64plus.org/")
 714     (synopsis "Mupen64Plus Rice Video plugin")
 715     (description
 716      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 717 which is capable of accurately playing many games.  This package contains the
 718 Arachnoid video plugin.")
 719     (license license:gpl2+)))
 720
 721 (define-public mupen64plus-video-glide64
 722   (package
 723     (name "mupen64plus-video-glide64")
 724     (version "2.0.0")
 725     (source
 726      (origin
 727        (method url-fetch)
 728        (uri (string-append
 729              "https://github.com/mupen64plus/mupen64plus-video-glide64/archive/"
 730              version ".tar.gz"))
 731        (file-name (string-append name "-" version ".tar.gz"))
 732        (sha256
 733         (base32 "1rm55dbf6xgsq1blbzs6swa2ajv0qkn38acbljj346abnk6s3dla"))))
 734     (build-system gnu-build-system)
 735     (native-inputs
 736      `(("pkg-config" ,pkg-config)
 737        ("which" ,which)))
 738     (inputs
 739      `(("mesa" ,mesa)
 740        ("mupen64plus-core" ,mupen64plus-core)
 741        ("sdl2" ,sdl2)))
 742     (arguments
 743      '(#:phases
 744        (modify-phases %standard-phases
 745          ;; The mupen64plus build system has no configure phase.
 746          (delete 'configure)
 747          ;; Makefile is in a subdirectory.
 748          (add-before
 749           'build 'cd-to-project-dir
 750           (lambda _
 751             (chdir "projects/unix")))
 752          ;; XXX Should be unnecessary with the next release.
 753          (add-before
 754           'build 'use-sdl2
 755           (lambda _
 756             (substitute* "Makefile"
 757               (("SDL_CONFIG = (.*)sdl-config" all prefix)
 758                (string-append "SDL_CONFIG = " prefix "sdl2-config"))))))
 759        #:make-flags
 760        (let ((out (assoc-ref %outputs "out"))
 761              (m64p (assoc-ref %build-inputs "mupen64plus-core")))
 762          (list "all"
 763                (string-append "PREFIX=" out)
 764                (string-append "APIDIR=" m64p "/include/mupen64plus")))
 765        ;; There are no tests.
 766        #:tests? #f))
 767     (home-page "http://www.mupen64plus.org/")
 768     (synopsis "Mupen64Plus Rice Video plugin")
 769     (description
 770      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 771 which is capable of accurately playing many games.  This package contains the
 772 Glide64 video plugin.")
 773     (license license:gpl2+)))
 774
 775 (define-public mupen64plus-video-glide64mk2
 776   (package
 777     (name "mupen64plus-video-glide64mk2")
 778     (version "2.5")
 779     (source
 780      (origin
 781        (method url-fetch)
 782        (uri (string-append
 783              "https://github.com/mupen64plus/mupen64plus-video-glide64mk2/archive/"
 784              version ".tar.gz"))
 785        (file-name (string-append name "-" version ".tar.gz"))
 786        (sha256
 787         (base32 "1ihl4q293d6svba26b4mhapjcdg12p90gibz79b4mx423jlcxxj9"))))
 788     (build-system gnu-build-system)
 789     (native-inputs
 790      `(("pkg-config" ,pkg-config)
 791        ("which" ,which)))
 792     (inputs
 793      `(("boost" ,boost)
 794        ("libpng" ,libpng)
 795        ("mesa" ,mesa)
 796        ("mupen64plus-core" ,mupen64plus-core)
 797        ("sdl2" ,sdl2)
 798        ("zlib" ,zlib)))
 799     (arguments
 800      '(#:phases
 801        (modify-phases %standard-phases
 802          ;; The mupen64plus build system has no configure phase.
 803          (delete 'configure)
 804          ;; Makefile is in a subdirectory.
 805          (add-before
 806           'build 'cd-to-project-dir
 807           (lambda _
 808             (chdir "projects/unix"))))
 809        #:make-flags
 810        (let ((out (assoc-ref %outputs "out"))
 811              (m64p (assoc-ref %build-inputs "mupen64plus-core")))
 812          (list "all"
 813                (string-append "PREFIX=" out)
 814                (string-append "APIDIR=" m64p "/include/mupen64plus")))
 815        ;; There are no tests.
 816        #:tests? #f))
 817     (home-page "http://www.mupen64plus.org/")
 818     (synopsis "Mupen64Plus Rice Video plugin")
 819     (description
 820      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 821 which is capable of accurately playing many games.  This package contains the
 822 Glide64MK2 video plugin.")
 823     (license license:gpl2+)))
 824
 825 (define-public mupen64plus-video-rice
 826   (package
 827     (name "mupen64plus-video-rice")
 828     (version "2.5")
 829     (source
 830      (origin
 831        (method url-fetch)
 832        (uri (string-append
 833              "https://github.com/mupen64plus/mupen64plus-video-rice/archive/"
 834              version ".tar.gz"))
 835        (file-name (string-append name "-" version ".tar.gz"))
 836        (sha256
 837         (base32 "0rd2scjmh285w61aj3mgx71whg5rqrjbry3cdgicczrnyvf8wdvk"))))
 838     (build-system gnu-build-system)
 839     (native-inputs
 840      `(("pkg-config" ,pkg-config)
 841        ("which" ,which)))
 842     (inputs
 843      `(("libpng" ,libpng)
 844        ("mesa" ,mesa)
 845        ("mupen64plus-core" ,mupen64plus-core)
 846        ("sdl2" ,sdl2)))
 847     (arguments
 848      '(#:phases
 849        (modify-phases %standard-phases
 850          ;; The mupen64plus build system has no configure phase.
 851          (delete 'configure)
 852          ;; Makefile is in a subdirectory.
 853          (add-before
 854           'build 'cd-to-project-dir
 855           (lambda _
 856             (chdir "projects/unix"))))
 857        #:make-flags
 858        (let ((out (assoc-ref %outputs "out"))
 859              (m64p (assoc-ref %build-inputs "mupen64plus-core")))
 860          (list "all"
 861                (string-append "PREFIX=" out)
 862                (string-append "APIDIR=" m64p "/include/mupen64plus")))
 863        ;; There are no tests.
 864        #:tests? #f))
 865     (home-page "http://www.mupen64plus.org/")
 866     (synopsis "Mupen64Plus Rice Video plugin")
 867     (description
 868      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 869 which is capable of accurately playing many games.  This package contains the
 870 Rice Video plugin.")
 871     (license license:gpl2+)))
 872
 873 (define-public mupen64plus-video-z64
 874   (package
 875     (name "mupen64plus-video-z64")
 876     (version "2.0.0")
 877     (source
 878      (origin
 879        (method url-fetch)
 880        (uri (string-append
 881              "https://github.com/mupen64plus/mupen64plus-video-z64/archive/"
 882              version ".tar.gz"))
 883        (file-name (string-append name "-" version ".tar.gz"))
 884        (sha256
 885         (base32 "1x7wsjs5gx2iwx20p4cjcbf696zsjlh31qxmghwv0ifrq8x58s1b"))))
 886     (build-system gnu-build-system)
 887     (native-inputs
 888      `(("pkg-config" ,pkg-config)
 889        ("which" ,which)))
 890     (inputs
 891      `(("glew" ,glew)
 892        ("mupen64plus-core" ,mupen64plus-core)
 893        ("sdl2" ,sdl2)))
 894     (arguments
 895      '(#:phases
 896        (modify-phases %standard-phases
 897          ;; The mupen64plus build system has no configure phase.
 898          (delete 'configure)
 899          ;; Makefile is in a subdirectory.
 900          (add-before
 901           'build 'cd-to-project-dir
 902           (lambda _
 903             (chdir "projects/unix")))
 904          ;; XXX Should be unnecessary with the next release.
 905          (add-before
 906           'build 'use-sdl2
 907           (lambda _
 908             (substitute* "Makefile"
 909               (("SDL_CONFIG = (.*)sdl-config" all prefix)
 910                (string-append "SDL_CONFIG = " prefix "sdl2-config"))))))
 911        #:make-flags
 912        (let ((out (assoc-ref %outputs "out"))
 913              (m64p (assoc-ref %build-inputs "mupen64plus-core")))
 914          (list "all"
 915                (string-append "PREFIX=" out)
 916                (string-append "APIDIR=" m64p "/include/mupen64plus")))
 917        ;; There are no tests.
 918        #:tests? #f))
 919     (home-page "http://www.mupen64plus.org/")
 920     (synopsis "Mupen64Plus Z64 video plugin")
 921     (description
 922      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 923 which is capable of accurately playing many games.  This package contains the
 924 Z64 video plugin.")
 925     (license license:gpl2+)))
 926
 927 (define-public mupen64plus-ui-console
 928   (package
 929     (name "mupen64plus-ui-console")
 930     (version "2.5")
 931     (source
 932      (origin
 933        (method url-fetch)
 934        (uri (string-append
 935              "https://github.com/mupen64plus/mupen64plus-ui-console/archive/"
 936              version ".tar.gz"))
 937        (file-name (string-append name "-" version ".tar.gz"))
 938        (sha256
 939         (base32 "04qkpd8ic7xsgnqz7spl00wxdygf79m7d1k8rabbygjk5lg6p8z2"))
 940        (patches (search-patches "mupen64plus-ui-console-notice.patch"))))
 941     (build-system gnu-build-system)
 942     (native-inputs
 943      `(("pkg-config" ,pkg-config)
 944        ("which" ,which)))
 945     (inputs
 946      `(("sdl2" ,sdl2)))
 947     ;; Mupen64Plus supports a single data directory and a single plugin
 948     ;; directory in its configuration, yet we need data and plugin files from
 949     ;; a variety of packages.  The best way to deal with this is to install
 950     ;; all packages from which data and plugin files are needed into one's
 951     ;; profile, and point the configuration there.  Hence, propagate the most
 952     ;; important packages here to save the user from the bother.  The patch
 953     ;; mupen64plus-ui-console-notice also gives users instructions on what
 954     ;; they need to do in order to point the configuration to their profile.
 955     (propagated-inputs
 956      `(("mupen64plus-core" ,mupen64plus-core)
 957        ("mupen64plus-audio-sdl" ,mupen64plus-audio-sdl)
 958        ("mupen64plus-input-sdl" ,mupen64plus-input-sdl)
 959        ("mupen64plus-rsp-hle" ,mupen64plus-rsp-hle)
 960        ("mupen64plus-video-glide64" ,mupen64plus-video-glide64)
 961        ("mupen64plus-video-glide64mk2" ,mupen64plus-video-glide64mk2)
 962        ("mupen64plus-video-rice" ,mupen64plus-video-rice)))
 963     (arguments
 964      '(#:phases
 965        (modify-phases %standard-phases
 966          ;; The mupen64plus build system has no configure phase.
 967          (delete 'configure)
 968          ;; Makefile is in a subdirectory.
 969          (add-before
 970           'build 'cd-to-project-dir
 971           (lambda _
 972             (chdir "projects/unix"))))
 973        #:make-flags
 974        (let ((out (assoc-ref %outputs "out"))
 975              (m64p (assoc-ref %build-inputs "mupen64plus-core")))
 976          (list "all"
 977                (string-append "PREFIX=" out)
 978                (string-append "APIDIR=" m64p "/include/mupen64plus")
 979                ;; Trailing slash matters here.
 980                (string-append "COREDIR=" m64p "/lib/")))
 981        ;; There are no tests.
 982        #:tests? #f))
 983     (home-page "http://www.mupen64plus.org/")
 984     (synopsis "Mupen64Plus SDL input plugin")
 985     (description
 986      "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
 987 which is capable of accurately playing many games.  This package contains the
 988 command line user interface.  Installing this package is the easiest way
 989 towards a working Mupen64Plus for casual users.")
 990     (license license:gpl2+)))
 991
 992 (define-public nestopia-ue
 993   (package
 994     (name "nestopia-ue")
 995     (version "1.47")
 996     (source (origin
 997               (method url-fetch)
 998               (uri (string-append
 999                     "https://github.com/rdanbrook/nestopia/archive/"
1000                     version ".tar.gz"))
1001               (file-name (string-append name "-" version ".tar.gz"))
1002               (sha256
1003                (base32
1004                 "1dzrrjmvyqks64q5l5pfly80jb6qcsbj5b3dm40fijd5xnpbapci"))
1005               (modules '((guix build utils)))
1006               (snippet
1007                '(begin
1008                   ;; We don't need libretro for the GNU/Linux build.
1009                   (delete-file-recursively "libretro")
1010                   ;; Use system zlib.
1011                   (delete-file-recursively "source/zlib")
1012                   (substitute* "source/core/NstZlib.cpp"
1013                     (("#include \"../zlib/zlib.h\"") "#include <zlib.h>"))))))
1014     (build-system gnu-build-system)
1015     (native-inputs
1016      `(("pkg-config" ,pkg-config)))
1017     (inputs
1018      `(("ao" ,ao)
1019        ("glu" ,glu)
1020        ("gtk+" ,gtk+)
1021        ("libarchive" ,libarchive)
1022        ("mesa" ,mesa)
1023        ("sdl2" ,sdl2)
1024        ("zlib" ,zlib)))
1025     (arguments
1026      '(#:phases
1027        (modify-phases %standard-phases
1028          ;; The Nestopia build system consists solely of a Makefile.
1029          (delete 'configure)
1030          (add-before 'build 'remove-xdg-desktop-menu-call
1031            (lambda _
1032              (substitute* "Makefile"
1033                (("xdg-desktop-menu install .*") ""))))
1034          (add-before 'build 'remove-gdkwayland-include
1035            (lambda _
1036              (substitute* "source/unix/gtkui/gtkui.h"
1037                (("#include <gdk/gdkwayland\\.h>") "")))))
1038        #:make-flags (let ((out (assoc-ref %outputs "out")))
1039                       (list "CC=gcc" "CXX=g++" (string-append "PREFIX=" out)))
1040        ;; There are no tests.
1041        #:tests? #f))
1042     (home-page "http://0ldsk00l.ca/nestopia/")
1043     (synopsis "Nintendo Entertainment System (NES/Famicom) emulator")
1044     (description
1045      "Nestopia UE (Undead Edition) is a fork of the Nintendo Entertainment
1046 System (NES/Famicom) emulator Nestopia, with enhancements from members of the
1047 emulation community.  It provides highly accurate emulation.")
1048     (license license:gpl2+)))
1049
1050 (define-public retroarch
1051   (package
1052     (name "retroarch")
1053     (version "1.7.1")
1054     (source
1055      (origin
1056        (method url-fetch)
1057        (uri (string-append "https://github.com/libretro/RetroArch/archive/v"
1058                            version ".tar.gz"))
1059        (file-name (string-append name "-" version ".tar.gz"))
1060        (sha256
1061         (base32 "0fdribjfc5zz9brzhqcxw6m76kvyg13l67aiigszv4wsjd5j3gpz"))))
1062     (build-system gnu-build-system)
1063     (arguments
1064      '(#:tests? #f                      ; no tests
1065        #:phases
1066        (modify-phases %standard-phases
1067          (replace 'configure
1068            (lambda* (#:key inputs outputs #:allow-other-keys)
1069              (let* ((out (assoc-ref outputs "out"))
1070                     (etc (string-append out "/etc"))
1071                     (vulkan (assoc-ref inputs "vulkan-icd-loader")))
1072                ;; Hard-code the path to libvulkan.so.
1073                (substitute* "gfx/common/vulkan_common.c"
1074                  (("libvulkan.so") (string-append vulkan "/lib/libvulkan.so")))
1075                (substitute* "qb/qb.libs.sh"
1076                  (("/bin/true") (which "true")))
1077                ;; The configure script does not yet accept the extra arguments
1078                ;; (like ‘CONFIG_SHELL=’) passed by the default configure phase.
1079                (zero? (system*
1080                        "./configure"
1081                        (string-append "--prefix=" out)
1082                        (string-append "--global-config-dir=" etc)))))))))
1083     (inputs
1084      `(("alsa-lib" ,alsa-lib)
1085        ("ffmpeg" ,ffmpeg)
1086        ("freetype" ,freetype)
1087        ("libxinerama" ,libxinerama)
1088        ("libxkbcommon" ,libxkbcommon)
1089        ("libxml2" ,libxml2)
1090        ("libxv" ,libxv)
1091        ("mesa" ,mesa)
1092        ("openal" ,openal)
1093        ("pulseaudio" ,pulseaudio)
1094        ("python" ,python)
1095        ("sdl" ,sdl2)
1096        ("udev" ,eudev)
1097        ("vulkan-icd-loader" ,vulkan-icd-loader)
1098        ("wayland" ,wayland)
1099        ("zlib" ,zlib)))
1100     (native-inputs
1101      `(("pkg-config" ,pkg-config)
1102        ("which" ,which)))
1103     (home-page "https://www.libretro.com/")
1104     (synopsis "Reference frontend for the libretro API")
1105     (description
1106      "Libretro is a simple but powerful development interface that allows for
1107 the easy creation of emulators, games and multimedia applications that can plug
1108 straight into any libretro-compatible frontend.  RetroArch is the official
1109 reference frontend for the libretro API, currently used by most as a modular
1110 multi-system game/emulator system.")
1111     (license license:gpl3+)))