I am unfamiliar with debconf and it's interfaces but I wonder if adding just the libgtk2-perl package would solve your problem. I would think that debconf just uses gtk not gnome features? If it was gtk only it could easily be added to xubuntu.
-- You need to add libgnome2-perl to the general packages installed https://launchpad.net/bugs/50168 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs