anchor.diff:      gdk-pixbuf
       glib
       libimobiledevice
  +    libplist
       libusb
       libxml2
       mutagen
  
positive.code:   nativeBuildInputs = [
      gettext
      intltool
      libimobiledevice.swig
      perl
      perlPackages.XMLParser
    ];
  
negative.code: , gdk-pixbuf
  , glib
  , libimobiledevice
  , libplist
  , libusb
  , libxml2
  , mutagen
  