anchor.diff:    ];
   };
   
  -(callPackage ./package.nix {}).overrideAttrs (old : {
  -  NIX_DEBUG = 5;
  -})
  -# (callPackage ./package.nix {}).overrideAttrs (old : {
  -#   postInstall = ''
  -#     cp ${SDL2_mixer}/bin/SDL2_mixer.dll \
  -#        ${SDL2}/bin/SDL2.dll ${libconfig}/bin/libconfig-11.dll \
  -#        ${libmodplug}/bin/libmodplug-1.dll \
  -#        ${libvorbis}/bin/libvorbis-0.dll \
  -#        ${libvorbis}/bin/libvorbisfile-3.dll \
  -#        ${libogg}/bin/libogg-0.dll \
  -#        ${libopus}/bin/libopus-0.dll \
  -#        ${opusfile}/bin/libopusfile-0.dll \
  -#        ${stage-final-gcc}/x86_64-w64-mingw32/lib/libstdc++-6.dll \
  -#        $out/bin
  -#   '';
  -# })
  +callPackage ./package.nix {}
  
positive.code: with import <nixpkgs> {
    crossSystem = {
      config = "x86_64-w64-mingw32";
  
negative.code:         buildInputs = []; # get rid of alsaLib (like for darwin)
        });
        libGL = super.libGL.overrideAttrs (old:  {
          # like darwin
          buildCommand = ''
            mkdir -p $out/nix-support $dev
            echo ${self.mesa} >> $out/nix-support/propagated-build-inputs
  