If there is no gtkmozembed, listen will fail in the following way: Checking for pygtkmozembed: not found Listen require gnome-python-extras. (http://ftp.gnome.org/pub/GNOME/sources/gnome-python-extras) (apart from that typo "require") You can depend on gnome-python-extras-2.14.2-r1 and test for one of the following USE flags on it with built_with_use: firefox, seamonkey, xulrunner.
Sorry, je_fro, I mixed it up...reassigning
included in -r1 version thanks