anchor.diff:      libxi
       libxkbcommon
       python3Packages.python
  +    unicode-character-database
       wayland
     ];
   
  
positive.code: , libxi
  , libxkbcommon
  , python3Packages
  , vala
  , wayland
  , xorg
  
negative.code:     sed -i configure \
        -e "s|PYTHON2_LIBDIR=.*|PYTHON2_LIBDIR=$out/lib/${
          python3Packages.python.libPrefix}|"
    '' + /* Upstream does not correctly implement autoconf flags */ ''
      sed -i configure \
        -e 's,/usr/share/unicode/ucd,${unicode-character-database}/share/unicode-character-database,g'
    '';
  
    preFixup = ''
  