Bug#885709: nvidia-settings: libgtk{2,3} dependencies need updating

[Graham Inggs]

On 12/01/2018 02:45, Andreas Beckmann wrote:
> I don't see such behavior in sid on amd64/i386/armhf - is this specific
> to Ubuntu?

Sorry for not checking that.  Indeed, this is specific to Ubuntu where 
libgtk2.0-0.symbols gained a bunch of symbols like:

  g_cclosure_marshal_VOID__*@Base 2.24.31

...and libnvidia-gtk2.so built in Ubuntu imports 
g_cclosure_marshal_VOID__POINTER and g_cclosure_marshal_VOID__VOID

> The most generic solution would probably be to split nvidia-settings
> into three packages: nvidia-settings, libnvidia-gtk2, libnvidia-gtk3
> and drop any gtk dependency magic we currently have.

That would work, but I still don't like the idea as these "shared 
libraries" or "plugins" are only used by nvidia-settings and aren't 
shared with anything else and would just waste in the archive metadata. 
Besides, I expect the gtk2 version to fall away at some point.

So, although no change is needed in Debian right now, I do think the 
regexes on (>= 2.8.0) and (>= 3.0.0) are a little fragile and either 
should be relaxed, or should fail if no match is found so at least an 
unexpected change can be caught.