If we have a package set for the variant (which happens if there are
modules), include a list of all NEVRAs in the pungi kickstart.
This can be used to make sure only packages from correct tag get into
the compose. If two packages with same name but different version get
into the compose, this can help get even older version into a particular
variant.
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>
Running depsolving with no requested inputs will only lead to a hard to
decipher error. We should instead explicitly tell the user that there is
a problem.
Unit tests are added to add to test this functionality.
Relates: #585
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>
