On Wed, Jul 24, 2013 at 8:49 AM, Alex Alexander <wi...@gentoo.org> wrote: > Hello, > > Please revbump an ebuild after changing its USE dependencies. > > Using net-p2p/transmission as an example, it used to depend on > dev-qt/qtgui:4=[dbus] > however, qtgui lost the dbus useflag, so the dependency was changed to > dev-qt/qtgui:4=[dbus(+)] > without revbumping the transmission ebuild. [0] > > Portage fails to notice this when resolving dependencies if the package was > installed prior to the change, resulting in errors like the following: > (dev-qt/qtgui-4.8.5::gentoo, ebuild scheduled for merge) conflicts > with dev-qt/qtgui:4/4=[dbus] required by > (net-p2p/transmission-2.80::gentoo, installed) > > which, I imagine, could be very frustrating for a user who doesn't mess > with the internals of Gentoo often. > > You might think that such a revbump is overkill, but in reality the user will > have to re-emerge the package anyway in order to get rid of the error, so > there > is no point in avoiding it, unless portage changes the way it handles these > changes. > > [0] > http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/net-p2p/transmission/transmission-2.80.ebuild?r1=1.1&r2=1.2 >
Actually, Portage normally handles this situation gracefully by using the dependencies from the portage tree instead of vdb. However, in the case of a slot-operator dep, it always uses vdb. See bug 477544. https://bugs.gentoo.org/show_bug.cgi?id=477544
