Hi, Thiss old bug [1] is about python-pygobject.
1: <http://issues.guix.gnu.org/issue/30122> On Mon, 15 Jan 2018 at 13:15, Fis Trivial <ybbs.da...@hotmail.com> wrote: > * Steps to reproduce: > Install python-pygobject with guix: `guix package -i python-pygobject` > Install gtk+ with guix: `guix package -i gtk+` > > $ python >>>> from gi.repository import Gtk > > * Full message > > Python 3.5.3 (default, Jan 1 1970, 00:00:01) > [GCC 5.4.0] on linux > Type "help", "copyright", "credits" or "license" for more information. >>>> from gi.repository import Gtk > /home/fis/.guix-profile/lib/python3.5/site-packages/gi/module.py:178: > Warning: cannot register existing type 'AtkImplementorIface' [...] > TypeError: must be an interface >>>> Using Guix 3694c0d, it seems to work. --8<---------------cut here---------------start------------->8--- guix environment --ad-hoc gtk+ python-pygobject python -- python3 Python 3.8.2 (default, Jan 1 1970, 00:00:01) [GCC 7.5.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import gi >>> gi.require_version('Gtk', '3.0') >>> from gi.repository import Gtk >>> --8<---------------cut here---------------end--------------->8--- Does it work for you? All the best, simon