diff --git a/guix.scm b/guix.scm
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+;; SuperTux
+;; Copyright (C) 2019 Ingo Ruhnke <grumbel@gmail.com>
+;;
+;; This program 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.
+;;
+;; This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+(use-modules (ice-9 popen)
+             (ice-9 rdelim)
+             (guix build utils)
+             (guix build-system cmake)
+             (guix build-system gnu)
+             (guix download)
+             (guix git-download)
+             (guix gexp)
+             ((guix licenses) #:prefix license:)
+             (guix packages)
+             (gnu packages audio)
+             ((gnu packages base) #:prefix base:)
+             (gnu packages autotools)
+             (gnu packages boost)
+             (gnu packages curl)
+             (gnu packages fontutils)
+             (gnu packages fribidi)
+             (gnu packages game-development)
+             (gnu packages gcc)
+             (gnu packages gl)
+             (gnu packages gtk)
+             (gnu packages pkg-config)
+             (gnu packages python)
+             (gnu packages sdl)
+             (gnu packages squirrel)
+             (gnu packages version-control)
+             (gnu packages xiph))
+
+(define %source-dir (dirname (current-filename)))
+
+(define (source-predicate . dirs)
+  (let ((preds (map (lambda (p)
+                      (git-predicate (string-append %source-dir p)))
+                    dirs)))
+    (lambda (file stat)
+      (let loop ((f (car preds))
+                 (rest (cdr preds)))
+        (if (f file stat)
+            #t
+            (if (not (nil? rest))
+                (loop (car rest) (cdr rest))
+                #f))))))
+
+(define current-commit
+  (with-directory-excursion %source-dir
+                            (let* ((port   (open-input-pipe "git describe --tags"))
+                                   (output (read-line port)))
+                              (close-pipe port)
+                              (string-trim-right output #\newline))))
+
+(define-public raqm
+  (package
+   (name "raqm")
+   (version "0.7.0")
+   (source
+    (origin
+     (method git-fetch)
+     (uri (git-reference
+           (url "https://github.com/HOST-Oman/libraqm")
+           (commit (string-append "v" version))))
+     (file-name (git-file-name name version))
+     (sha256
+      (base32
+       "0byxvrfb7g6wiykbzrfrvrcf178yjrfvix83bmxsvrdnyh7jqvfx"))))
+   (build-system gnu-build-system)
+   (arguments
+    '(#:tests? #f)) ; needs python and stuff
+   (native-inputs
+    `(("autoconf" ,autoconf)
+      ("automake" ,automake)
+      ("libtool" ,libtool)
+      ("pkg-config" ,pkg-config)
+      ; ("python" ,python)
+      ))
+   (inputs
+    `(("which" ,base:which)
+      ("gtk-doc" ,gtk-doc)
+      ("freetype" ,freetype)))
+   (propagated-inputs
+    `(("harfbuzz" ,harfbuzz)
+      ("fribidi" ,fribidi)))
+   (synopsis "A library for complex text layout")
+   (description "Raqm is a small library that encapsulates the logic
+for complex text layout and provides a convenient API.
+
+It currently provides bidirectional text support (using FriBiDi),
+shaping (using HarfBuzz), and proper script itemization.  As a result,
+Raqm can support most writing systems covered by Unicode.")
+   (home-page "https://github.com/HOST-Oman/libraqm")
+   (license license:x11)))
+
+(define-public supertux
+  (package
+   (name "supertux")
+   (version current-commit)
+   (source (local-file %source-dir
+                       #:recursive? #t
+                       #:select? (source-predicate
+                                  ""
+                                  "/external/findlocale"
+                                  "/external/physfs"
+                                  "/external/SDL_ttf"
+                                  "/external/squirrel"
+                                  "/external/googletest"
+                                  "/external/obstack"
+                                  "/external/SDL_SavePNG"
+                                  "/external/sexp-cpp"
+                                  "/external/tinygettext")))
+   (arguments
+    `(#:tests? #f
+      #:configure-flags '("-DINSTALL_SUBDIR_BIN=bin"
+                          "-DUSE_SYSTEM_PHYSFS=ON")
+      #:phases
+      (modify-phases %standard-phases
+         (add-after 'unpack 'set-version-number
+                    (lambda _
+                      (substitute* "version.cmake.in"
+                       (("\\$\\{MAJOR_VERSION_GIT\\}") ,"0")
+                       (("\\$\\{MINOR_VERSION_GIT\\}") ,"6")
+                       (("\\$\\{PATCH_VERSION_GIT\\}") ,"0")
+                       (("\\$\\{TWEAK_VERSION_GIT\\}") ,"")
+                       (("\\$\\{VERSION_STRING_GIT\\}") ,current-commit))
+                      (copy-file "version.cmake.in" "version.cmake")
+             #t)))))
+   (build-system cmake-build-system)
+   (native-inputs
+    `(;("git" ,git)
+      ("pkg-config" ,pkg-config)
+      ("python" ,python)))
+   (inputs
+    `(("sdl2" ,sdl2)
+      ("sdl2-image" ,sdl2-image)
+      ("sdl2-mixer" ,sdl2-mixer)
+      ("openal" ,openal)
+      ("mesa" ,mesa)
+      ("glew" ,glew)
+      ("libvorbis" ,libvorbis)
+      ("libogg" ,libogg)
+      ("physfs" ,physfs)
+      ("curl" ,curl)
+      ("boost" ,boost)
+      ("freetype" ,freetype)
+      ("raqm" ,raqm)
+      ("squirrel" ,squirrel)))
+   (synopsis "2D platformer game")
+   (description "SuperTux is a free classic 2D jump'n run sidescroller game
+in a style similar to the original Super Mario games covered under
+the GNU GPL.")
+   (home-page "https://supertux.org/")
+   (license license:gpl3+)))
+
+supertux
+
+;; EOF ;;