[Bug 2121820] [NEW] pkgProblemResolver finds problems on default Ubuntu Desktop install in Noble+

[Wesley Hershberger]

Public bug reported:

Spinning this bug off of 2072586 because it's not strictly related to
the dconf changes.

On a default Noble install, apt's pkgProblemResolver (when triggered)
finds unmet dependencies (full log attached as noble-desktop-
breaks.txt):

```
The following packages have unmet dependencies:
 libcanberra-pulse : Depends: pipewire-pulse but it is not going to be installed or
                              pulseaudio but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
```

After removing libcanberra-pulse, pkgProblemResolver attempts to remove
many desktop packages (see attached noble-desktop-remove.txt).

The libcanberra-pulse issue does not occur on Plucky, but
pkgProblemResolver still attempts to remove many of the desktop
packages.

To reproduce, install from ISO from releases.ubuntu.com; dist-upgrade,
and trigger pkgProblemResolver.

I'm not sure if this is expected behavior or not but would like to
confirm since removing the desktop seems like misbehavior.

[ Other Information ]

See also 2099966, 2099829

** Affects: apt (Ubuntu)
     Importance: Low
         Status: New

** Attachment added: "noble-desktop-breaks.txt"
   https://bugs.launchpad.net/bugs/2121820/+attachment/5904466/+files/noble-desktop-breaks.txt

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https://bugs.launchpad.net/bugs/2121820

Title:
  pkgProblemResolver finds problems on default Ubuntu Desktop install in
  Noble+

Status in apt package in Ubuntu:
  New

Bug description:
  Spinning this bug off of 2072586 because it's not strictly related to
  the dconf changes.

  On a default Noble install, apt's pkgProblemResolver (when triggered)
  finds unmet dependencies (full log attached as noble-desktop-
  breaks.txt):

  ```
  The following packages have unmet dependencies:
   libcanberra-pulse : Depends: pipewire-pulse but it is not going to be installed or
                                pulseaudio but it is not going to be installed
  E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
  ```

  After removing libcanberra-pulse, pkgProblemResolver attempts to
  remove many desktop packages (see attached noble-desktop-remove.txt).

  The libcanberra-pulse issue does not occur on Plucky, but
  pkgProblemResolver still attempts to remove many of the desktop
  packages.

  To reproduce, install from ISO from releases.ubuntu.com; dist-upgrade,
  and trigger pkgProblemResolver.

  I'm not sure if this is expected behavior or not but would like to
  confirm since removing the desktop seems like misbehavior.

  [ Other Information ]

  See also 2099966, 2099829

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