Comment 3 for bug 1239037

This bug is still valid. We don't have a problem at this point, because we have both mir and mesa packages in the archive, so we can build new versions using the existing versions of -dev packages to fulfill dependencies (this needs some care when we make incompatible changes).

I agree that our best way forward is to remove the dependency libegl1-mesa-dev has on libmirclient-dev. It's reasonable to assume that a program that needs to use Mir with EGL will depend on libmirclient-dev itself, or at least mircommon-dev (otherwise how can it know about the MirConnection/Surfaces types it needs to pass to EGL?).

I would also recommend changing mesa to build-depend on mircommon-dev instead of the full libmirclient-dev, since it only needs the Mir EGL definitions in the former package.

Note, though, that as Daniel points in bug #1192908, we have a circular dependency issue at the source package level, that can't be solved unless we either use multiple source packages for Mir, or move our Mir Mesa EGL definitions upstream in Mesa, as Kevin suggested.