anchor.diff:  { stdenv, fetchurl, SDL, boost, cmake, ffmpeg, gettext, glew
  -, ilmbase, jackaudio, libXi, libjpeg, libpng, libsamplerate, libsndfile
  +, ilmbase, libXi, libjpeg, libpng, libsamplerate, libsndfile
   , libtiff, mesa, openal, opencolorio, openexr, openimageio, openjpeg, python
   , zlib
  +, jackaudioSupport ? false, jackaudio
   }:
   
   stdenv.mkDerivation rec {
  
positive.code:     sha256 = "1rgkijn1nirj3jwh058zv6piw8q4j5wwjapgbvh2hh6fpbj84bgb";
    };
  
    buildInputs = [
      SDL boost cmake ffmpeg gettext glew ilmbase jackaudio libXi
      libjpeg libpng libsamplerate libsndfile libtiff mesa openal
      opencolorio openexr openimageio openjpeg python zlib
    ];
  
  
    cmakeFlags = [
      "-DOPENEXR_INC=${openexr}/include/OpenEXR"
      "-DWITH_OPENCOLLADA=OFF"
      "-DWITH_CODEC_FFMPEG=ON"
      "-DWITH_CODEC_SNDFILE=ON"
      "-DWITH_JACK=ON"
      "-DWITH_INSTALL_PORTABLE=OFF"
      "-DPYTHON_LIBRARY=python${python.majorVersion}m"    
      "-DPYTHON_LIBPATH=${python}/lib"
      "-DPYTHON_INCLUDE_DIR=${python}/include/python${python.majorVersion}m"
      "-DPYTHON_VERSION=${python.majorVersion}"
    ];
  
    NIX_CFLAGS_COMPILE = "-I${ilmbase}/include/OpenEXR -I${python}/include/${python.libPrefix}m";
  
  
negative.code:     license = licenses.gpl2Plus;
      platforms = platforms.linux;
      maintainers = [ maintainers.goibhniu ];
    };
  }
  