Bug#956870: gnome-shell: Incompatible versions in testing

[Simon McVittie]

Control: reassign -1 libgnome-desktop-3-18
Control: tags -1 bullseye
Control: affects -1 gnome-shell gnome gdm3

On Thu, 16 Apr 2020 at 08:47:56 +0100, Simon McVittie wrote:
> On Thu, 16 Apr 2020 at 09:05:55 +0200, Marc Glisse wrote:
> > Apr 16 08:18:30 stedding gnome-shell[5986]: cannot register existing type 'GnomeBGSlideShow'
> > Apr 16 08:18:30 stedding gnome-shell[5986]: cannot add private field to invalid (non-instantiatable) type '<invalid>'
> > Apr 16 08:18:30 stedding gnome-shell[5986]: **
> > Apr 16 08:18:30 stedding gnome-shell[5986]: GnomeDesktop:ERROR:../libgnome-desktop/gnome-bg-slide-show.c:86:gnome_bg_slide_show_set_property: assertion failed: (GNOME_BG_IS_SLIDE_SHOW (object))
> > Apr 16 08:18:30 stedding gnome-shell[5986]: Bail out! GnomeDesktop:ERROR:../libgnome-desktop/gnome-bg-slide-show.c:86:gnome_bg_slide_show_set_property: assertion failed: (GNOME_BG_IS_SLIDE_SHOW (object))
> 
> This is caused by the binNMUs for the gnome-desktop3 transition being
> incomplete. GNOME Shell ends up loading two different versions, and they're
> incompatible.