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Re: Bug#911620: shared-mime-info,gconf2: trigger cycle during upgrade from stretch to buster

Control: reassign -1 dpkg 1.19.2
Control: affects -1 shared-mime-info gconf2

On Mon, Oct 22, 2018 at 07:29:33PM +0200, Andreas Beckmann wrote:
> Package: shared-mime-info,gconf2
> Severity: serious
> User: debian-qa@lists.debian.org
> Usertags: piuparts
> Control: found -1 1.10-1
> Control: found -1 3.2.6-5
> Control: affects -1 + microhope
> Hi,
> during a test with piuparts I noticed your package fails to upgrade from
> 'stretch'.
> It installed fine in 'stretch', then the upgrade to 'buster' fails.
> >From the attached log (scroll to the bottom...):
>   Setting up libgl1-mesa-glx:amd64 (18.1.7-1) ...
>   dpkg: cycle found while processing triggers:
>    chain of packages whose triggers are or may be responsible:
>     shared-mime-info -> gconf2
>    packages' pending triggers which are or may be unresolvable:
>     shared-mime-info: /usr/share/mime/packages
>     libc-bin: ldconfig
>     gconf2: /usr/share/gconf/schemas
>   dpkg: error processing package shared-mime-info (--configure):
>    triggers looping, abandoned
> This was observed during a 2-stage upgrade from stretch to buster:
>   apt-get upgrade && apt-get dist-upgrade
> Both shared-mime-info and gconf2 were already upgraded successfully
> during the first stage.
> The package being tested was microhope.
> IIRC shared-mime-info switched to no-await triggers - so this trigger
> cycle problem should have vanished...

Guillem confirmed that this looks like a trigger cycle problem in dpkg
with already existing bugs.

> cheers,
> Andreas



       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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