add gzdoom to nixpkgs

pkgs/games/gzdoom/default.nix

@@ -0,0 +1,33 @@
+{stdenv, fetchFromGitHub, cmake, fmod, mesa, SDL2}:
+
+stdenv.mkDerivation {
+  name = "gzdoom-2015-05-07";
+  src = fetchFromGitHub{
+    owner = "coelckers";
+    repo = "gzdoom";
+    rev = "a59824cd8897dea5dd452c31be1328415478f990";
+    sha256 = "1lg9dk5prn2bjmyznq941a862alljvfgbb42whbpg0vw9vhpikak";
+  };
+
+  buildInputs = [ cmake fmod mesa SDL2 ];
+
+  cmakeFlags = [ "-DFMOD_LIBRARY=${fmod}/lib/libfmodex.so" ];
+
+  preConfigure=''
+    sed s@gzdoom.pk3@$out/share/gzdoom.pk3@ -i src/version.h
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp gzdoom $out/bin
+    mkdir -p $out/share
+    cp gzdoom.pk3 $out/share
+  '';
+
+  meta = {
+    homepage = https://github.com/coelckers/gzdoom;
+    description = "A Doom source port based on ZDoom. It features an OpenGL renderer and lots of new features";
+    maintainer = [ stdenv.lib.maintainers.lassulus ];
+  };
+}
+

pkgs/top-level/all-packages.nix

@@ -12932,6 +12932,8 @@ let
 
   gtypist = callPackage ../games/gtypist { };
 
+  gzdoom = callPackage ../games/gzdoom { };
+
   hedgewars = callPackage ../games/hedgewars {
     inherit (haskellPackages) ghc network vector utf8String bytestringShow
       random hslogger dataenc;