xviewer broken with python-gobject >= 3.52

[ahmubashshir]

Archlinux Issue: https://gitlab.archlinux.org/archlinux/packaging/packages/pygobject/-/issues/3

Peas-1.0 (>= 1.38), with GLib-2.0 (>= 2.85), uses GIRepository-3.0, which fixes the issue...

peas-gir2.patch can be applied to use GIR-3.0 if the conditions are satisfied.