On 05.05.2012 06:59, Josh Triplett wrote: >> I see three different solutions, which all suck in their own way: >> a/ Make gir1.2-coglpango-1.0, gir1.2-cogl-1.0 and libcogl-pango0 break >> libcogl5 > > This seems like the best choice of the three you mentioned. Anything > using any of those and linking against libcogl5 will break, and "Breaks: > libcogl5" seems like the best available proxy for "Breaks: everything > depending on libcogl5 and this package". Just tested it. Looks like downgrading libcogl-pango0 is sufficient to avoid the gnome-shell crash. Seems it doesn't matter if the typelib files in gir1.2-coglpango-1.0 and gir1.2-cogl-1.0 are linked against libcogl9. I'm not quite sure why that is. This probably would need further investigation and more time. > The more optimal but more difficult alternative: figure out all packages > currently depending on libcogl5 and previous versions of the GNOME > introspection bits, and declare a versioned breaks against all of them. As we have packages in experimental, like empathy, which have a higher version number but still link against libcogl5, this is not working that great either. >> b/ Make libcogl9 break libcogl5 > > I don't think this one makes sense; those two libraries work fine on the > same system as long as nothing loads both of them. > >> c/ Make libcogl9 break libclutter-1.0-0 << 1.10 > > I don't think this one makes sense either, though it comes closer. Well, libclutter-1.0-0-1.10 has a breaks against libcogl5 and basically all packages using libcogl also use libclutter. So this would ensure that all three libs (libcogl, libcogl-pango and libclutter) are upgraded in lockstep. It's still a bit early in the morning here, and I had no coffee yet, so I might be missing something and I'd appreciate further comments. That said, I'll probably just make libcogl-pango0 break libcogl5 as this seems to be sufficient and upload this in a few hours. Michael -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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