anchor.diff:      libglvnd
       libpthread-stubs
       libomxil-bellagio
  -    #libva  # FIXME: recursive dependency
  +    libva
       libvdpau
       libxt
       llvm
  
positive.code:     "--${boolEn (buildConfig != "opengl-dummy")}-xvmc"
      "--${boolEn (buildConfig != "opengl-dummy")}-vdpau"
      "--${boolEn (buildConfig != "opengl-dummy")}-omx"
      # FIXME: We use mesa as libgl at build time and libva depends on libgl
      #"--enable-va"
      # TODO: Figure out how to enable opencl without having a
      #       runtime dependency on clang
      "--disable-opencl"
  
negative.code: , libglvnd
  , libomxil-bellagio
  , libpthread-stubs
  , libva
  , libvdpau
  , libx11
  , libxcb
  