anchor.diff:      [ boost ffmpeg gettext glew ilmbase
         freetype libjpeg libpng libsamplerate libsndfile libtiff
         opencolorio openexr openimageio2 openjpeg python zlib fftw jemalloc
  +      alembic
         (opensubdiv.override { inherit cudaSupport; })
         tbb
         makeWrapper
  
positive.code: 
    cmakeFlags =
      [
        "-DWITH_ALEMBIC=OFF"
        "-DWITH_MOD_OCEANSIM=ON"
        "-DWITH_CODEC_FFMPEG=ON"
        "-DWITH_CODEC_SNDFILE=ON"
  
negative.code: , ilmbase, libXi, libX11, libXext, libXrender
  , libjpeg, libpng, libsamplerate, libsndfile
  , libtiff, libGLU, libGL, openal, opencolorio, openexr, openimageio2, openjpeg, python3Packages
  , openvdb, libXxf86vm, tbb, alembic
  , zlib, fftw, opensubdiv, freetype, jemalloc, ocl-icd, addOpenGLRunpath
  , jackaudioSupport ? false, libjack2
  , cudaSupport ? config.cudaSupport or false, cudatoolkit
  