anchor.diff:      "-DWITH_OPENCOLLADA=OFF"
       "-DWITH_CODEC_FFMPEG=ON"
       "-DWITH_CODEC_SNDFILE=ON"
  -    "-DWITH_SYSTEM_OPENJPEG=ON"
       "-DWITH_JACK=ON"
       "-DWITH_INSTALL_PORTABLE=OFF"
       "-DPYTHON_LIBRARY=python${python.majorVersion}m"    
  
positive.code:     sha256 = "0wj8x9xk5irvsjc3rm7wzml1j47xcdpdpy84kidafk02biskcqcb";
    };
  
    buildInputs = [ cmake mesa ffmpeg jackaudio gettext python glew libjpeg libpng zlib openal
      SDL openexr libsamplerate libsndfile libXi libtiff ilmbase opencolorio openimageio openjpeg boost ];
  
  
    cmakeFlags = [
  
negative.code: { stdenv, fetchurl, SDL, boost, cmake, ffmpeg, gettext, glew
  , ilmbase, jackaudio, libXi, libjpeg, libpng, libsamplerate, libsndfile
  , libtiff, mesa, openal, opencolorio, openexr, openimageio, openjpeg, python
  , zlib
  }:
  
  stdenv.mkDerivation rec {
    name = "blender-2.66a";
  