anchor.diff:  , mesa
   , openal
   , pkgconfig
  -, SDL
  +, SDL2
  +, sfml
   , wxGTK
   , zip
   , zlib
   }:
   
  -stdenv.mkDerivation {
  -  name = "VBAM-1507";
  -  src = fetchsvn {
  -    url = "svn://svn.code.sf.net/p/vbam/code/trunk";
  -    rev = 1507;
  -    sha256 = "0fqvgi5s0sacqr9yi7kv1klqlvfzr13sjq5ikipirz0jv50kjxa7";
  +stdenv.mkDerivation rec {
  +  name = "visualboyadvance-m-${version}";
  +  version = "unstable-2017-09-04";
  +  src = fetchFromGitHub {
  +    owner = "visualboyadvance-m";
  +    repo = "visualboyadvance-m";
  +    rev = "ceef480";
  +    sha256 = "1lpmlj8mv6fwlfg9m58hzggx8ld6cnjvaqx5ka5sffxd9v95qq2l";
     };
   
     buildInputs = [
  
positive.code: { stdenv
  , cairo
  , cmake
  , fetchsvn
  , ffmpeg
  , gettext
  , libpng
  , libpthreadstubs
  , libXdmcp
  
negative.code:     cmake
      ffmpeg
      gettext
      gtk2-x11
      mesa
      openal
      pkgconfig
      SDL2
      sfml
      wxGTK
      zip
      zlib
  