Package: mrtg Version: 2.17.10-5+deb12u1 Severity: serious User: debian...@lists.debian.org Usertags: piuparts Control: block 1040860 with -1
Hi, during a test with piuparts I noticed your package modifies conffiles. This is forbidden by the policy, see https://www.debian.org/doc/debian-policy/ch-files.html#configuration-files 10.7.3: "[...] The easy way to achieve this behavior is to make the configuration file a conffile. [...] This implies that the default version will be part of the package distribution, and must not be modified by the maintainer scripts during installation (or at any other time)." Note that once a package ships a modified version of that conffile, dpkg will prompt the user for an action how to handle the upgrade of this modified conffile (that was not modified by the user). Further in 10.7.3: "[...] must not ask unnecessary questions (particularly during upgrades) [...]" If a configuration file is customized by a maintainer script after having asked some debconf questions, it may not be marked as a conffile. Instead a template could be installed in /usr/share and used by the postinst script to fill in the custom values and create (or update) the configuration file (preserving any user modifications!). This file must be removed during postrm purge. ucf(1) may help with these tasks. See also https://wiki.debian.org/DpkgConffileHandling In https://lists.debian.org/debian-devel/2012/09/msg00412.html and followups it has been agreed that these bugs are to be filed with severity serious. debsums reports modification of the following files, from the attached log (scroll to the bottom...): /etc/mrtg/mrtg.cfg My impression is that the unmodified new conffile (from bookworm) gets overwritten with the unmodified old conffile (from bullseye), something that shouldn't happen. I'd suggest to withdraw the 2.17.10-5+deb12u1 bookworm-pu update and revisit that for the next point release (there is no time left to fix this properly before saturday). I have some idea how this could be solved better, but I need to try that first. cheers, Andreas PS: piuparts runs under DEBIAN_FRONTEND=noninteractive
mrtg_2.17.10-5+deb12u1.log.gz
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