anchor.diff:    };
   
     buildInputs =
  -    [ SDL boost cmake ffmpeg gettext glew ilmbase libXi
  +    [ boost cmake ffmpeg gettext glew ilmbase libXi libX11 freetype
         libjpeg libpng libsamplerate libsndfile libtiff mesa openal
  -      opencolorio openexr openimageio /* openjpeg */ python zlib fftw
  +      opencolorio openexr openimageio openjpeg python zlib fftw
         (opensubdiv.override { inherit cudaSupport; })
       ]
       ++ optional jackaudioSupport libjack2
  
positive.code: { stdenv, lib, fetchurl, SDL, boost, cmake, ffmpeg, gettext, glew
  , ilmbase, libXi, libjpeg, libpng, libsamplerate, libsndfile
  , libtiff, mesa, openal, opencolorio, openexr, openimageio, openjpeg, python
  , zlib, fftw, opensubdiv
  , jackaudioSupport ? false, libjack2
  , cudaSupport ? false, cudatoolkit
  , colladaSupport ? true, opencollada
  
negative.code:       "-DWITH_SDL=ON"
        "-DWITH_GAMEENGINE=ON"
        "-DWITH_OPENCOLORIO=ON"
        "-DWITH_SYSTEM_OPENJPEG=ON"
        "-DWITH_PLAYER=ON"
        "-DWITH_OPENSUBDIV=ON"
        "-DPYTHON_LIBRARY=python${python.majorVersion}m"
        "-DPYTHON_LIBPATH=${python}/lib"
        "-DPYTHON_INCLUDE_DIR=${python}/include/python${python.majorVersion}m"
        "-DPYTHON_VERSION=${python.majorVersion}"
        "-DWITH_PYTHON_INSTALL=OFF"
        "-DWITH_PYTHON_INSTALL_NUMPY=OFF"
      ]
      ++ optional jackaudioSupport "-DWITH_JACK=ON"
      ++ optional cudaSupport "-DWITH_CYCLES_CUDA_BINARIES=ON"
  