anchor.diff:      libXrender
       libcacard
       libjpeg
  +    libopus
       lz4
       openssl
  +    orc
       pixman
       python3.pkgs.pyparsing
       zlib
  
positive.code: 
    buildInputs = [
      alsaLib
      celt_0_5_1
      cyrus_sasl
      glib
      libXext
      libXfixes
      libXinerama
  
negative.code: , ninja
  , pkgconfig
  , pixman
  , alsaLib
  , openssl
  , libXrandr
  