ebuild will now automatically add @system to world_sets on upgrade and
therefore it should no longer be necessary to add it world_sets via the
command line.
svn path=/main/trunk/; revision=11538
# Same as for world, though later portage versions might use a different class
[system]
class = portage.sets.profiles.PackagesSystemSet
+world-candidate = False
# For security there are multiple classes available, but differences are
# rather small (normally there should be no visible difference):