The following errors out on jhbuild trunk (gtk+, glib, gobject-introspection, pygobject)

from gi.repository import Gtk
class A(Gtk.Window):
    def do_size_allocate(self, *args):
        return Gtk.Window.do_size_allocate(self, *args)
A().show()

TypeError: argument allocation: Expected Gdk.Rectangle, but got gi.repository.cairo.RectangleInt

ebassi pointed to some recent bug reports/changes and his suggested change fixes the above but I haven't looked into it any further.

<ebassi> https://bugzilla.gnome.org/show_bug.cgi?id=748832
<ebassi> And: https://bugzilla.gnome.org/show_bug.cgi?id=748833
<ebassi> pygobject does some overriding of its own on GdkRectangle as well
<ebassi> The original issue: https://bugzilla.gnome.org/show_bug.cgi?id=723394
<ebassi> lazka: I think pygobject should remove this:
<ebassi>     from gi.repository import cairo as _cairo
<ebassi>     Rectangle = _cairo.RectangleInt
<ebassi> From the Gdk.py override