Bug#956121: Blank screen on 2nd display using wayland

[Pierre Cheynier]

Hi Simon, list,

This evening, I gave a try to:

* upgrading my system except gnome-shell/mutter etc.
I tried to bump gir1.2-gnomedesktop-3.0, but this breaks gnome either
in 3.36.1-2 or 3.36.1-3
(https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=956896).
May I suggest to add a "Breaks: gnome-shell (<< 3.36)" instead of
"Breaks: gnome-shell (<< 3.34)"? Or maybe I'm missing something?

* repackaging mutter 3.36.1+git20200419-1 with my revert of 59e9b073
from upstream (context in the gnome thread
https://gitlab.gnome.org/GNOME/mutter/-/issues/1193#note_776408)
Unfortunately it requires libgnome-desktop-3-dev which depends on
gir1.2-gnomedesktop-3.0, same version, so I'm back to the first issue.
I can upgrade, compile, downgrade though.

Any path I could follow to not experience too much troubles while
still being able to test an upgrade with this revert?

pch