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Bug#986562: marked as done (debian-edu-artwork-spacefun: leaves alternatives after purge: /usr/share/ldm/themes/default -> /etc/alternatives/ldm-theme -> /usr/share/ldm/themes/debian-edu-spacefun)

Your message dated Thu, 20 May 2021 21:03:28 +0000
with message-id <E1ljppI-0004kP-Lx@fasolo.debian.org>
and subject line Bug#986562: fixed in debian-edu-artwork-legacy 20201210-3
has caused the Debian Bug report #986562,
regarding debian-edu-artwork-spacefun: leaves alternatives after purge: /usr/share/ldm/themes/default -> /etc/alternatives/ldm-theme -> /usr/share/ldm/themes/debian-edu-spacefun
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
986562: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=986562
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: debian-edu-artwork-buster
Version: 2.11.5-2
Severity: important
User: debian-qa@lists.debian.org
Usertags: piuparts

Hi,

during a test with piuparts I noticed your package left unowned files on
the system after purge, which is a violation of policy 6.8:

https://www.debian.org/doc/debian-policy/ch-maintainerscripts.html#details-of-removal-and-or-configuration-purging

The leftover files are actually alternatives that were installed by the
package but have not been properly removed.

While there is ongoing discussion how to remove alternatives correctly
(see https://bugs.debian.org/71621 for details) the following strategy
should work for regular cases:
* 'postinst configure' always installs the alternative
* 'prerm remove' removes the alternative
* 'postrm remove' and 'postrm disappear' remove the alternative
In all other cases a maintainer script is invoked (e.g. upgrade,
deconfigure) the alternatives are not modified to preserve user
configuration.
Removing the alternative in 'prerm remove' avoids having a dangling link
once the actual file gets removed, but 'prerm remove' is not called in
all cases (e.g. unpacked but not configured packages or disappearing
packages) so the postrm must remove the alternative again
(update-alternatives gracefully handles removal of non-existing
alternatives).

Note that the arguments for adding and removing alternatives differ, for
removal it's 'update-alternatives --remove <name> <path>'.

Filing this as important as having a piuparts clean archive is a release
goal since lenny.

>From the attached log (scroll to the bottom...):

1m14.6s INFO: Warning: Package purging left files on system:
  /etc/alternatives/ldm-theme -> /usr/share/ldm/themes/debian-edu-buster	 not owned
  /usr/share/ldm/	 not owned
  /usr/share/ldm/themes/	 not owned
  /usr/share/ldm/themes/default -> /etc/alternatives/ldm-theme	 not owned


cheers,

Andreas

Attachment: debian-edu-artwork-buster_2.11.5-2.log.gz
Description: application/gzip


--- End Message ---
--- Begin Message --- 
Source: debian-edu-artwork-legacy
Source-Version: 20201210-3
Done: Mike Gabriel <sunweaver@debian.org>

We believe that the bug you reported is fixed in the latest version of
debian-edu-artwork-legacy, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 986562@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Mike Gabriel <sunweaver@debian.org> (supplier of updated debian-edu-artwork-legacy package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Thu, 20 May 2021 22:35:53 +0200
Source: debian-edu-artwork-legacy
Architecture: source
Version: 20201210-3
Distribution: unstable
Urgency: medium
Maintainer: Debian Edu Developers <debian-edu@lists.debian.org>
Changed-By: Mike Gabriel <sunweaver@debian.org>
Closes: 986562
Changes:
 debian-edu-artwork-legacy (20201210-3) unstable; urgency=medium
 .
   [ Andreas Beckmann ]
   * Clean up obsolete ldm-theme alternative on upgrades. (Closes: #986562)
 .
   [ Wolfgang Schweer ]
   * Make sure the Plymouth theme is restored to the Debian default one in case
     the debian-edu-artwork-spacefun package is removed.
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