anchor.diff:  , poppler
   , shared-mime-info
   , xorg
  -, xproto
  +, xorgproto
   , xz
   , zlib
   }:
  
positive.code: , babl
  , bzip2
  , cairo
  , fixesproto
  , freetype
  , fontconfig
  , gdk-pixbuf
  
negative.code:     babl
      bzip2
      cairo
      freetype
      fontconfig
      gdk-pixbuf
  