This is
https://bugzilla.redhat.com/show_bug.cgi?id=1079906 (originally
https://bugzilla.redhat.com/show_bug.cgi?id=1062997 ). It partially works
now in Rawhide, except that it fails to remove the old version of
kernel-devel (see
https://bugzilla.redhat.com/show_bug.cgi?id=1079906#c18
which is still waiting for someone to respond).