anchor.diff:  , aalib
   , atk
   , babl
  +, bzip2
   , cairo
   , freetype
   , fontconfig
   , gdk-pixbuf
   , gegl
  +, gexiv2
   , ghostscript
   , glib
   , gnome2
   , gtk2
  +, harfbuzz
   , jasper
   , lcms2
   , libexif
  +, libgudev
   , libjpeg
   , libmng
   , libpng
  
positive.code:     aalib
      atk
      babl
      cairo
      freetype
      fontconfig
      gdk-pixbuf
      gegl
      ghostscript
      glib
      gnome2.libart_lgpl
      gtk2
      jasper
      lcms2
      libexif
      libjpeg
      libmng
      libpng
  
negative.code:     libtiff
      libwmf
      libzip
      openexr
      pango
      poppler
      pythonPackages.python
      pythonPackages.pygtk
      xorg.libXext
      xorg.libXfixes
      xorg.libXmu
      xorg.libXpm
      zlib
      zeroc_ice
    ];
  
    pythonPath = [
  