Control: reassign -1 gir1.2-gnomedesktop-3.0 3.27.90-1

On Sun, 18 Feb 2018 at 20:57:05 -0800, Abhijit Hoskeri wrote:
> gnome-shell crashes on startup with the new version of
> gir1.2-gnomedesktop-3.0 is installed. I worked around the problem by
> holding the package to 3.26.x.

I think this is better represented as a libgnome-desktop bug: the new
libgnome-desktop from experimental is not yet ready for full-stack
testing.

When I saw this crash, it was because the same process had both
libgnome-desktop-3-12 (via libmutter) and libgnome-desktop-3-17 (via
gir1.2-gnomedesktop-3.0) in the same process space, and they fight.

gir1.2-gnomedesktop-3.0 (>= 3.27) should probably have a Breaks
on libmutter-1-0 (<< 3.27) to prevent the broken situation from
being installable. However, Mutter 3.27 has not yet been uploaded to
experimental, so if that was done, there is no version that would be
co-installable with libgnome-desktop-3-17 yet.

> ii  libc6                                        2.27-0experimental0
> ii  libpolkit-gobject-1-0                        0.113-6

You appear to be installing all available packages from experimental. This
is almost certainly a bad idea. If they were ready for general use,
they wouldn't be in experimental.

    smcv

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