GNU bug report logs - #27467
Xfce broken, because it propagates two different versions of gtk+

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Message #23 received at 27467 <at> debbugs.gnu.org (full text, mbox):

From: ng0 <ng0 <at> infotropique.org>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: Ricardo Wurmus <rekado <at> elephly.net>, 27467 <at> debbugs.gnu.org
Subject: Re: bug#27467: Xfce broken, because it propagates two different
 versions of gtk+
Date: Mon, 26 Jun 2017 17:03:31 +0000

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Ludovic Courtès transcribed 2.4K bytes:
> Ricardo Wurmus <rekado <at> elephly.net> skribis:
> 
> > Mark H Weaver <mhw <at> netris.org> writes:
> >
> >> ludo <at> gnu.org (Ludovic Courtès) writes:
> >>
> >>> Mark H Weaver <mhw <at> netris.org> skribis:
> >>>
> >>>> I just tried to update my GuixSD system to commit
> >>>> c57b56722f6c167c5a285f47802047de85a356ae on master.  "guix system build"
> >>>> failed with the following error:
> >>>>
> >>>> guix system: error: profile contains conflicting entries for gtk+:out
> >>>> guix system: error:   first entry: gtk+@2.24.31:out /gnu/store/901ify6fr2zlr2y2acpvlqr8lygmwj98-gtk+-2.24.31
> >>>> guix system: error:    ... propagated from exo <at> 0.10.3
> >>>> guix system: error:    ... propagated from xfce <at> 4.12.0
> >>>> guix system: error:   second entry: gtk+@3.22.15:out /gnu/store/fhqaljm8cf78irhqjbrm8n0ri1k2cznm-gtk+-3.22.15
> >>>> guix system: error:    ... propagated from libxfce4ui <at> 4.12.0
> >>>> guix system: error:    ... propagated from garcon <at> 0.4.0
> >>>> guix system: error:    ... propagated from xfce <at> 4.12.0
> >>>
> >>> I just tried and Exo builds fine with GTK+3, so I would think this
> >>> reference to GTK+2 was a mistake.  Can you check if it works fine for
> >>> you with this change?
> >>
> >> After changing Exo to use Gtk+3, I get this:
> >>
> >> guix system: error: profile contains conflicting entries for gtk+:out
> >> guix system: error:   first entry: gtk+@2.24.31:out /gnu/store/0m9hpckvamd048zgsrhx1dx2s5hrg1qk-gtk+-2.24.31
> >> guix system: error:    ... propagated from libxfce4ui <at> 4.12.0
> >> guix system: error:    ... propagated from garcon <at> 0.4.0
> >> guix system: error:    ... propagated from xfce <at> 4.12.0
> >> guix system: error:   second entry: gtk+@3.22.15:out /gnu/store/hc090rjjka3r9spvzl7yn5hcc2xgrgdh-gtk+-3.22.15
> >> guix system: error:    ... propagated from libxfce4ui <at> 4.12.0
> >> guix system: error:    ... propagated from garcon <at> 0.4.0
> >> guix system: error:    ... propagated from xfce <at> 4.12.0
> >
> > libxfce4ui propagates both gtk+@3 and gtk+@2.  There is no conflict
> > between these two versions of gtk, because they are installed into
> > separate sub-directories under $prefix/lib.
> 
> So this is on purpose, right?  Sounds weird no?
> 
> > How should we handle exceptions like this?  Should packages get a new
> > property that would allow them to specify that they do not conflict with
> > a certain variant?
> 
> Good question, we could add a property I suppose.
> 
> At any rate, we need a quick fix for Xfce.  What’s the best approach?
> 
> Ludo’.

I guess this is on purpose as xfce4 is in the process of moving everything
from gtk+-2 to gtk+-3.
I have a branch which updates some of the packages but fails for gtk related
reasons as well.
It seems somewhat related, maybe it can help to analyze the/both problem(s),
should I post it separately?
-- 
ng0
OpenPG: A88C8ADD129828D7EAC02E52E22F9BBFEE348588
infotropique: https://www.infotropique.org
personal: https://ng-0.github.io https://krosos.org/

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