[Bug 2154363] [NEW] ubiquity (from main) depends on dbus-x11 (moving to universe)

[Alessandro Astone]

Public bug reported:

As part of the transition to dbus-broker (bug 2015538), we're going to
demote the dbus-x11 binary package to universe.

The ubiquity binary package includes ubiquity-dm, which seems to have
once been used to run a live desktop session with the ubiquity graphical
installer. As this was written many moons ago it assumes X11, no systemd
user session, and a manual dbus user session launched via `dbus-launch`.

Please consider the most appropriate action between:
* Demote bin:ubiquity to universe, currently in supported due to oem-config which I'm not sure really needs to be supported
* Split ubiquity-dm into a separate binary package in universe
* Drop the `Depends: dbus-11` stanza: if there are users of ubiquity-dm they can add it to their seeds
* Modernize ubiquity-dm to run a systemd user session (via pam_systemd?), which in turn would pull in the default user dbus service, instead of dbus-launch
* Delete ubiquity-dm??

** Affects: ubiquity (Ubuntu)
     Importance: High
         Status: New

** Changed in: ubiquity (Ubuntu)
   Importance: Undecided => High

** Changed in: ubiquity (Ubuntu)
    Milestone: None => ubuntu-26.07

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Title:
  ubiquity (from main) depends on dbus-x11 (moving to universe)

Status in ubiquity package in Ubuntu:
  New

Bug description:
  As part of the transition to dbus-broker (bug 2015538), we're going to
  demote the dbus-x11 binary package to universe.

  The ubiquity binary package includes ubiquity-dm, which seems to have
  once been used to run a live desktop session with the ubiquity
  graphical installer. As this was written many moons ago it assumes
  X11, no systemd user session, and a manual dbus user session launched
  via `dbus-launch`.

  Please consider the most appropriate action between:
  * Demote bin:ubiquity to universe, currently in supported due to oem-config which I'm not sure really needs to be supported
  * Split ubiquity-dm into a separate binary package in universe
  * Drop the `Depends: dbus-11` stanza: if there are users of ubiquity-dm they can add it to their seeds
  * Modernize ubiquity-dm to run a systemd user session (via pam_systemd?), which in turn would pull in the default user dbus service, instead of dbus-launch
  * Delete ubiquity-dm??

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