Re: [gentoo-dev] revbumping ebuilds after USE dependency changes

[Alex Alexander]

On Wed, Jul 24, 2013 at 10:15:51AM -0400, Mike Gilbert wrote:
> On Wed, Jul 24, 2013 at 8:49 AM, Alex Alexander <wired@g.o> 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

Aha, thanks for the bug, missed it. Well, my recommendation is still
valid until portage gets fixed. Glad to know someone's looking into
it though.

-- 
Alex Alexander | wired@gentoo
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