gnu: Add endless-sky.

* gnu/packages/games.scm (endless-sky): New variable.

gnu/packages/games.scm

@@ -19,7 +19,7 @@
 ;;; Copyright © 2016 Albin Söderqvist <albin@fripost.org>
 ;;; Copyright © 2016, 2017, 2018 Kei Kebreau <kkebreau@posteo.net>
 ;;; Copyright © 2016 Alex Griffin <a@ajgrf.com>
-;;; Copyright © 2016, 2017, 2018 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2016, 2017, 2018, 2019 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
 ;;; Copyright © 2016 Steve Webber <webber.sl@gmail.com>
 ;;; Copyright © 2017 Adonay "adfeno" Felipe Nogueira <https://libreplanet.org/wiki/User:Adfeno> <adfeno@hyperbola.info>
@@ -152,6 +152,7 @@ (define-module (gnu packages games)
   #:use-module (guix build-system go)
   #:use-module (guix build-system haskell)
   #:use-module (guix build-system meson)
+  #:use-module (guix build-system scons)
   #:use-module (guix build-system python)
   #:use-module (guix build-system cmake)
   #:use-module (guix build-system trivial))
@@ -5946,3 +5947,59 @@ (define-public quadrapassel
 complete lines.  You score by dropping blocks fast and completing lines.  As
 your score gets higher, you level up and the blocks fall faster.")
     (license license:gpl2+)))
+
+(define-public endless-sky
+  (package
+    (name "endless-sky")
+    (version "0.9.8")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/endless-sky/endless-sky")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "0i36lawypikbq8vvzfis1dn7yf6q0d2s1cllshfn7kmjb6pqfi6c"))))
+    (build-system scons-build-system)
+    (arguments
+     `(#:scons ,scons-python2
+       #:scons-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out")))
+       #:tests? #f ; no tests
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'patch-resource-locations
+           (lambda* (#:key outputs #:allow-other-keys)
+             (substitute* "source/Files.cpp"
+               (("/usr/local/")
+                (string-append (assoc-ref outputs "out") "/")))
+             #t))
+         (add-after 'unpack 'patch-scons
+           (lambda _
+             (substitute* "SConstruct"
+               ;; Keep environmental variables
+               (("Environment\\(\\)")
+                "Environment(ENV = os.environ)")
+               ;; Install into %out/bin
+               (("games\"") "bin\""))
+             #t)))))
+    (inputs
+     `(("glew" ,glew)
+       ("libjpeg" ,libjpeg-turbo)
+       ("libmad" ,libmad)
+       ("libpng" ,libpng)
+       ("openal" ,openal)
+       ("sdl2" ,sdl2)))
+    (home-page "https://endless-sky.github.io/")
+    (synopsis "2D space trading and combat game")
+    (description "Endless Sky is a 2D space trading and combat game.  Explore
+other star systems.  Earn money by trading, carrying passengers, or completing
+missions.  Use your earnings to buy a better ship or to upgrade the weapons and
+engines on your current one.  Blow up pirates.  Take sides in a civil war.  Or
+leave human space behind and hope to find friendly aliens whose culture is more
+civilized than your own.")
+    (license (list license:gpl3+
+                   license:cc-by-sa3.0
+                   license:cc-by-sa4.0
+                   license:public-domain))))