anchor.diff:  
     src = fetchurl {
       url = "http://www.ffado.org/files/libffado-${version}.tgz";
  -    multihash = "Qmdhm6mWmGbguNFibZYhW2eQHYovjGGkQCydShQ8Af93yj";
  -    sha256 = "18e3c7e610b7cee58b837c921ebb985e324cb2171f8d130f79de02a3fc435f88";
  +    multihash = "QmfDoK6vRALc6h8zHe62NqZDdJrzPLdSLBzRTRjiL4mCct";
  +    sha256 = "8e380032816e6fd93bd42dca8bf1828965d1befc1f4049677afb3ed018cd3793";
     };
   
     nativeBuildInputs = [
  
positive.code:       "$PYTHONPATH:$PYDIR:$out/share/libffado/python"
    '';
  
    meta = with stdenv.lib; {
      homepage = http://www.ffado.org;
      description = "FireWire audio drivers";
      license = licenses.gpl3;
  
negative.code:     optionalString
      platforms;
  
    version = "2.4.0";
  
    gcc-warnings_patch =
      (fetchTritonPatch {
  