[Bug 2045668] Re: Please merge dbus 1.14.10-3 (main) from Debian unstable

[Steve Langasek]

The usrmerge transition was completed already in Ubuntu several cycles
ago.  We should not promote usr-is-merged to main, we should drop the
dependencies on it instead.

usrmerge can also be dropped from main now.  It is only in main because
it is seeded with the rationale:

 * (usrmerge)     # xnox Default since Disco. Will be mandatory in
22.10. Only recommend, such that it is installed on upgrades, can be
removed afterwards.

The comment is misleading, the commit talking about "mandatory in 22.10"
was made in November 2020.  We've had a full LTS cycle since then where
users, whether on new installs or upgrades, have been in a usrmerge
configuration and there is no support for non-usrmerged filesystems in
Ubuntu 21.04 or later.

So we should drop this recommends, drop usrmerge source from main, and
drop dbus's dependency on usr-is-merged.

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Title:
  Please merge dbus 1.14.10-3 (main) from Debian unstable

Status in dbus package in Ubuntu:
  In Progress

Bug description:
  1.14.10-3
  Published in sid-release on 2023-10-30

  dbus (1.14.10-3) unstable; urgency=medium

    * d/control: dbus Depends on usr-is-merged (>= 38~).
      Non-merged /usr has been unsupported since Debian 12, as per Technical
      Committee resolutions #978636 and #994388 (please see the Debian 12
      release notes for details).
      The version of usr-is-merged shipped in Debian 12 had an undocumented
      opt-out mechanism intended for use on buildds and QA systems targeting
      Debian 12 (piuparts, reproducible-builds, autopkgtest and similar),
      to ensure that the upgrade path from Debian 11 to 12 will continue
      to work and continue to undergo automated tests. That opt-out is
      no longer applicable or available in trixie/sid, and was removed in
      usrmerge version 38.
      Since version 1.14.10-2, dbus ships its systemd units in
      /usr/lib/systemd/system, as part of the distro-wide transition
      away from making use of "aliased" paths. This is entirely valid on
      merged-/usr systems, but will no longer work in the unsupported
      filesystem layout with non-merged /usr, because for historical
      reasons, current versions of systemd on non-merged-/usr systems will
      only read units from /lib/systemd/system.
      In the case of dbus, the symptom when this assumption is broken is
      particularly bad (various key system services will not start, with
      long delays during boot, login and shutdown), so let's hold back
      this upgrade on unsupported non-merged-/usr systems until they have
      completed the switch to merged-/usr and can install
      usr-is-merged (>= 38~).
      (Closes: #1054650)

   -- Simon McVittie <smcv at debian.org>  Mon, 30 Oct 2023 11:51:35 +0000

  1.14.10-2
  Superseded in sid-release on 2023-10-30

  dbus (1.14.10-2) unstable; urgency=low

    * Backport packaging changes from experimental:
      - Install systemd system units into /usr/lib/systemd/system.
        This was allowed by TC resolution #1053901. The shared library is
        still in /lib, for now.
        Build-depend on debhelper 13.11.6~ to ensure that the units are still
        picked up by dh_installsystemd.
      - Build-depend on pkgconf rather than pkg-config
      - dbus-x11: Don't copy XDG_SEAT_PATH, XDG_SESSION_PATH to activation
        environment. These variables are specific to a single login session.
    * d/copyright: Drop unused entry for pkg.m4.
      This is no longer included in the upstream source release since 1.14.6.
    * d/dbus-tests.lintian-overrides: Drop unused overrides.
      Lintian no longer flags our RUNPATH as problematic.

   -- Simon McVittie <smcv at debian.org>  Wed, 25 Oct 2023 15:56:36 +0100

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