FreeBSD Port: ports-mgmt/gnome-packagekit

[Jeff Molofee]

Should packagekit be usable in FreeBSD?  It appears to run, even shows 
some of the ports that need updating.  While scanning however, it says 
"package sources unavailable" and when attempting an update I get the 
following messages:

command update-packages is not known.

If my install is broken, what ports do I need to update / reinstall to 
fix the issue?

Jeff