https://bugzilla.redhat.com/show_bug.cgi?id=1475483
--- Comment #5 from Zbigniew Jędrzejewski-Szmek zbyszek@in.waw.pl --- OK, I wasn't aware of the subpackage in rawhide. But this doesn't really change anything: dnf doesn't care from what srpm a binary subpackage originates. So when you just move the subpackage from qt-creator to a new srpm, nothing needs to be done (and the Obsoletes is not useful but harmless). So yeah, I still think you need to add the two Obsoletes as described for F26→F27+ upgrades.