https://bugzilla.redhat.com/show_bug.cgi?id=1460917
--- Comment #7 from Jakub Kadlčík jkadlcik@redhat.com ---
There are packages that depend on binary package 'rpkg' (which was removed
from fedora). So the point is to provide 'rpkg' again without changing other packages (e.g. to avoid requiring 'rpkg-client' on Fedora >= 26, and 'rpkg' on RHEL and older fedoras).
Aha, now I see the point of subpackage called 'rpkg'