Control: tags -1 pending
On 09/17/2016 06:39 PM, Andreas Beckmann wrote:
> still not completely resolved,
Will the third time be the charm?
I haven't been able to reproduce this issue with my piuparts setup, not
now and not before, I guess piuparts.d.o. does something more
piuparts -d jessie -d stretch -a qgis
I have now been able reproduce this issue manually in a jessie
cowbuilder chroot by installing qgis (with recommended dependencies),
and upgrading it to stretch via the usual procedure (apt-get upgrade
followed by apt-get dist-upgrade).
> I'll try to find some time to look there myself.
> Preparing to unpack .../qgis_2.14.6+dfsg-3_amd64.deb ...
> Unpacking qgis (2.14.6+dfsg-3) over (2.4.0-1+b1) ...
> dpkg: error processing archive
> /var/cache/apt/archives/qgis_2.14.6+dfsg-3_amd64.deb (--unpack):
> trying to overwrite '/usr/bin/qbrowser.bin', which is the diverted version
> of '/usr/bin/qbrowser' (package: qgis-plugin-grass)
Do you have a more complete log than the above?
piuparts.debian.org/jessie2stretch still reports:
Since the unpack is already failing, I think the diversion should also
be removed by the maintainer scripts for qgis-plugin-grass, not just
qgis as it is now. I suspect the complete log to confirm that
qgis-plugin-grass is upgraded before qgis is, that's what I'm seeing in
my jessie to stretch upgrade.
Some testing of the above reveals that adding the maintainers scripts to
qgis-plugin-grass to remove the diversion is not sufficient. The jessie
version of qgis-plugin-grass only removes the diversion in postrm which
is called after the new package's files are unpacked which is too late
because the unpackaging causes the error.
I think the jessie version of qgis needs to be fixed to remove the
diversion in qgis-plugin-grass.prerm too, because a version of the
package is already "Installed".
Because the qgis-plugin-grass package is being upgraded, the new preinst
could also remove the diversions before the new package's files are
unpacked. But unfortunately that fails with:
dpkg-divert: error: rename involves overwriting `/usr/bin/qgis.bin' with
different file `/usr/bin/qgis', not allowed
Just removing without renaming in qgis.preinst could be the actual
solution, it seems to give the desired results:
Preparing to unpack .../qgis_2.14.6+dfsg-4_amd64.deb ...
Removing 'diversion of /usr/bin/qgis to /usr/bin/qgis.bin by
Removing 'diversion of /usr/bin/qbrowser to /usr/bin/qbrowser.bin by
Unpacking qgis (2.14.6+dfsg-4) over (2.4.0-1+b1) ...
It's a much simpler change in addition to the one fixing #817176, I
should have thought of that sooner before you led me astray with your
suggestions in this issue.
I'm going to upload the above which should finally fix this issue.
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