Yes, API is not the same (although very similar) so all applications have to be ported. Some of this can be automated (using scripts like http://git.gnome.org/b

Yes, API is not the same (although very similar) so all applications have to be ported. Some of this can be automated (using scripts like http://git.gnome.org/browse/pygobject/tree/pygi-convert.sh http://git.gnome.org/browse/pygobject/tree/pygi-convert.sh) but it has to be done.