In a flash of inspiration ;) (or could it be that this has been touched upon before?) after tripping over an install or three (see bug 14029), I felt that the portage tree could easily be included in the grp install cds. That way, if a user has no network, he can still get an install done! How about it?
Well, on our new cds no portage tree will even be needed to install from GRP. I'm renaming this bug to "support non-network installs" and leaving it open.
This hasn't much value any more now that GRP installs are well documented and common. It's probably better to close this marking it as fixed, for want of a more accurate description.
I apologise for this bugspam, but I wish to close this product, so I need to move all the bugs.