gnu: Add gnome-arcade.

* gnu/packages/emulators.scm (gnome-arcade): New variable.

gnu/packages/emulators.scm

@@ -1463,6 +1463,69 @@ (define-public mame
     ;; keymaps, languages and samples are under CC0.
     (license (list license:gpl2+ license:expat license:cc0))))
 
+(define-public gnome-arcade
+  (package
+    (name "gnome-arcade")
+    (version "0.218.2")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/strippato/gnome-arcade")
+             (commit (string-append "v." version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "1qc01a62p65qb6mwjfmxqsd6n3rglsfwrjhsp25nr7q54107n55l"))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:tests? #f                      ; No tests.
+       #:configure-flags (list
+                          (string-append "-DMAME_BIN=\""
+                                         (assoc-ref %build-inputs "mame")
+                                         "/bin/mame\"")
+                          (string-append "-DAPP_RES=\""
+                                         (assoc-ref %outputs "out")
+                                         "/share/gnome-arcade/\""))
+       #:phases
+       (modify-phases %standard-phases
+         (add-before 'build 'fix-paths
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let ((out (assoc-ref outputs "out")))
+               (pk 'cwd (getcwd))
+               (substitute* "../source/src/config.c"
+                 (("/usr/share") (string-append out "/share"))))
+             #t))
+         (replace 'install
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (bin (string-append out "/bin"))
+                    (rom (string-append out "/share/gnome-arcade/data/rom"))
+                    (tile (string-append out "/share/gnome-arcade/data/tile")))
+               (mkdir-p bin)
+               (install-file "../gnome-arcade" bin)
+               (copy-recursively "../source/res"
+                                 (string-append out "/share/gnome-arcade/res"))
+               (mkdir-p rom)
+               (install-file "../source/data/rom/ROM.TXT" rom)
+               (mkdir-p tile)
+               (install-file "../source/data/tile/TILE.TXT" tile))
+             #t)))))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (inputs
+     `(("mame" ,mame)
+       ("gtk" ,gtk+)
+       ("libevdev" ,libevdev)
+       ("libvlc" ,vlc)
+       ("libarchive" ,libarchive)))
+    (home-page "https://github.com/strippato/gnome-arcade")
+    (synopsis "Minimal MAME frontend")
+    (description
+     "A minimal GTK+ frontend for MAME, the multi-purpose arcade and console
+emulator.")
+    (license license:gpl3+)))
+
 (define-public pcsxr
   ;; No release since 2017.
   (let ((commit "6484236cb0281e8040ff6c8078c87899a3407534"))