As soon as nothing in Rawhide uses libudev.so.0 anymore, we should Obsolete libudev and remove the standalone udev source package.
I will file bugs against packages that still link to libudev.so.0 or require libudev explicitly. The bugs will block this one.
Reference:
"rawhide: libudev version bump, merged into systemd, libudev user need rebuild"
http://lists.fedoraproject.org/pipermail/devel/2012-June/168227.html
Michal, do we need to obsolete it, or can we leave it as it is?
Other distributions, which generally allow parallel installable old lib
packages, do not obsolete the older ones because they might be still in
use by other (third-party) software.
What's the best thing here? Any recommendation?
Either you obsolete it, forcing a hard upgrade, or you don't, and people have stale libraries on their machines after a few upgrades.
Fedora's generally done the first option, although in at least some respects, that's because of file conflicts that pop up when people try the second poorly.