Harry, we allow both libs on the ppa builds to be co-installable, but the archive builds require a full transition anyway (all reverse deps get rebuilt). Also the debian guys claim there are issues having them co-installable, from the changelog
[ Andreas Henriksson ]
* libgnome-desktop-3-12: Add Breaks: libgnome-desktop-3-10
- Forces a full upgrade. This is to prevent applications linking to
and using both at the same time (which leads to crashed). That
happens in eg. gdm3 built against libgnome-desktop-3-10 when using
gir1.2-gnomedesktop-3.0 3.18.0-1 (built against
libgnome-desktop-3-12). (Closes: #801603)
Anyway the real solution to your problem is to disable xenial-proposed on your system, its not meant for human consumption.
Harry, we allow both libs on the ppa builds to be co-installable, but the archive builds require a full transition anyway (all reverse deps get rebuilt). Also the debian guys claim there are issues having them co-installable, from the changelog
[ Andreas Henriksson ] desktop- 3-12: Add Breaks: libgnome- desktop- 3-10 desktop- 3-10 when using 2-gnomedesktop- 3.0 3.18.0-1 (built against desktop- 3-12). (Closes: #801603)
* libgnome-
- Forces a full upgrade. This is to prevent applications linking to
and using both at the same time (which leads to crashed). That
happens in eg. gdm3 built against libgnome-
gir1.
libgnome-
Anyway the real solution to your problem is to disable xenial-proposed on your system, its not meant for human consumption.