[Pkg-libvirt-maintainers] Bug#953997: obsolete conffiles after upgrade

[Andrea Bolognani]

On Sun, Mar 16, 2025 at 10:05:57PM +0100, Michael Biebl wrote:
> It's correct that there is no native support in dpkg(-maintscript-helper) to
> transfer ownership of conffiles properly from one package to another.
> 
> It is doable though with some contortions, see e.g.
> https://salsa.debian.org/systemd-team/systemd/-/commit/d6483013d5779d4d465a1e174e44a754b941d0e6
> where
> /etc/dhcp/dhclient-exit-hooks.d/timesyncd and
> /etc/systemd/timesyncd.conf were moved from systemd into a newly split off
> package named systemd-timesyncd.

Yes, I'm aware of that. libvirt currently does something similar,
though not exactly identical.

The changes I'm proposing in

  https://salsa.debian.org/libvirt-team/libvirt/-/merge_requests/256

do away with all that logic in favor of using dpkg's built-in
handling. It's a little less polished, specifically because of
conffiles remaining around as obsolete for the old package in certain
scenarios, but the gains in terms of simplicity and reliability IMO
far outweigh those drawbacks.

-- 
Andrea Bolognani <eof at kiyuko.org>
Resistance is futile, you will be garbage collected.
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