doom64ex nix WIP, broken meta???

doom64ex.nix

{ stdenv, fetchFromGitHub
, gccStdenv, cmake, fluidsynth, SDL2, SDL2_net, zlib }:

stdenv.mkDerivation rec {
  name = "doom64ex-${version}";
  version = "unstable-2018-08-24";

  src = fetchFromGitHub {
    owner = "svkaiser";
    repo = "Doom64EX";
    rev = "03a5e6a5a3a14d66886f62b72431b37ef7336706";
    sha256 = "1m7jzfgrcjhp9rlsrlyrbp0kzdg9j20canyb9i68gm35dlqpf80d";
  };

  nativeBuildInputs = [ cmake ];
  buildInputs = [
    SDL2 SDL2_net fluidsynth zlib
  ];

  NIX_CFLAGS_LINK = [ "-lfluidsynth" "-lzlib" ];
  cmakeFlags = [ "-DENABLE_SYSTEM_FLUIDSYNTH=ON" ];

  enableParallelBuilding = true;

#  meta = with stdenv.lib {
#    homepage = https://doom64ex.wordpress.com/;
#    description = "A recreation of the Nindendo 64 game Doom 64";
#    license = licenses.gpl2;
#    platforms = platforms.linux;
#    maintainers = with maintainers; [ neonfuz ];
#  };
}