Adam Williamson (awilliam(a)redhat.com) said:
anaconda just shows the available package groups defined in comps:
it's up to the mate maintainers to get a mate group added to comps.
They could file a bug against the comps component in Bugzilla with a
patch to add a group for mate; they could also ask the comps
maintainer (Bill Nottingham) to give one of them commit privileges
to comps for the purpose of keeping the mate group up to date, I
believe this is standard procedure (we make sure someone from the
maintenance group for each desktop has comps access).
comps is open to packager; there's no other access to give. That being
said, last I heard MATE wasn't even fully in yet, so offering it before
that isn't likely to help users.
Bill