Re: [gentoo-user] Multiple instances of PyQt4

[Alan McKinnon]

On Tuesday 21 July 2009 17:11:33 Alex Schuster wrote:
> Hi there!
>
> My @world update shows this problem:
>
> !!! Multiple package instances within a single package slot have been
> pulled !!! into the dependency graph, resulting in a slot conflict:
>
> dev-python/PyQt4:0
>
>   ('ebuild', '/', 'dev-python/PyQt4-4.4.4-r5', 'merge') pulled in by
>
>     >=dev-python/PyQt4-4.4.0[X] required by ('installed', '/', 'kde-
>
> base/plasma-workspace-4.2.4', 'nomerge')
>     dev-python/PyQt4[X] required by ('installed', '/', 'media-
> sound/picard-0.11', 'nomerge')
>
>     >=dev-python/PyQt4-4.4 required by ('ebuild', '/', 'dev-
>
> python/qscintilla-python-2.3.2-r2', 'merge')
>     (and 1 more)
>
>   ('ebuild', '/', 'dev-python/PyQt4-4.4.4-r2', 'merge') pulled in by
>
>     >=dev-python/PyQt4-4.4.4-r1[dbus,qt3support,svg,webkit,X] required by
>
> ('ebuild', '/', 'kde-base/pykde4-4.2.4', 'merge')
>     (and 4 more)
>
> I would like to understand where the problem is. The bottom says that
> pykde4-4.2.4 needs at least PyQt4-4.4.4-r2. This is fine, I can see the
> corresponding DEPEND line in the pykde4-4.2.4 ebuild.
>
> The top list tells that:
>   plasma-workspace-4.2.4     needs PyQt4-4.4.0,
>   picard-0.11                needs PyQt4 and
>   qscintilla-python-2.3.2-r2 needs PyQt4-4.4
>
> Why then is PyQt4-4.4.4-r5 needed? -r2 should satisfy these needs, too,
> doesn't it? Or is the problem the 'and 1 more' line? How would I find out
> which other package would need -r5 then? And why would the other line be
> listed then? I don't get this.
>
> I grepped for PyQt4-4.4.4-r5 through all ebuilds, it appeared only in the
> PyQt4-4.4.4-r5.ebuild itself.
>
> This is not an important problem - I think I can unmask some stuff and it
> will work. But wanted to cut the amount of masking down a little, and I'm
> just curious why this happens.
>
> So, thanks for any insights, if want to practice your portage-fu, but don't
> bother if you have more important things to do, I'm fine :)

There was issues with pykde4 recently resulting in these blockers. Easiest way 
out is to remove all local masks you might have for PyQt and pykde4, unmerge 
both and emerge -uND world. Let portage sort it out.

IIRC you can get by by just unmerging one of them and it works. But, I'm too 
lazy now to figure out which way round it goes, and memory ain't what it used 
to be.

-- 
alan dot mckinnon at gmail dot com