This bug was fixed in the package ubuntustudio-meta - 0.293.1
---------------
ubuntustudio-meta (0.293.1) lunar; urgency=medium
* Refreshed dependencies
* Moved pipewire-pulse to audio-recommends, video-recommends (LP: #2018695)
-- Erich Eickmeyer <eeickme...@ubuntu.com> Sun, 07 May 2023 09:46:19
-0700
** Changed in: ubuntustudio-meta (Ubuntu Lunar)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2018695
Title:
[SRU] Hard-Dependency on pipewire-pulse preventing audio config switch
without packaging issues
Status in ubuntustudio-meta package in Ubuntu:
Fix Released
Status in ubuntustudio-meta source package in Lunar:
Fix Released
Status in ubuntustudio-meta source package in Mantic:
Fix Released
Bug description:
[Impact]
Ubuntu Studio introduced a way to switch between the new PipeWire-
based audio configuration and the older JACK/PulseAudio-based audio
configuration in the 23.04 release cycle. This was not without
complications throughout the entire process as PulseAudio had become
so deeply embedded that even the germinate seed had some assumptions
that PulseAudio would never go away.
As such, in order to prevent PulseAudio dependencies from
automatically installing where equivalent PipeWire alternatives exist
via `pipewire-pulse`, `pipewire-pulse` had to be seeded as a pre-seed
for the `ubuntustudio-audio` and `ubuntustudio-video` seeds in order
to prevent image build failures.
However, since pipewire-pulse was seeded as a hard dependency and not
as a recommends, when one went to switch to the pulseaudio
configuration via the `ubuntstudio-pulseaudio-config` package, it
would uninstall the ubuntustudio-audio and ubuntustudio-video
metapackages. Upon attempting to reinstall those metapackages, it
would reinstall pipewire-pulse, which would break the ubuntustudio-
pulseaudio-config package.
A fix is to this would be as simple as demoting the pre-seed of
pipewire-pulse to recommends.
[Test Case]
* Install Ubuntu Studio 23.04
* Install ubutustudio-pulseaudio-config
- Notice ubuntustudio-audio and ubuntustudio-video would be REMOVED. This
is not desired.
* Further testing can continue from here, but removal of those two
metapackages is proof enough of the breakage.
[Regression Potential]
The biggest regression potential in this would be that seeds in Mantic
would have trouble building as a result of this change. I don't see
this as happening as the entire point is to simply get it in before
pulseaudio, and that happens regardless of depends or recommends.
[Other Information]
This issue was not caught as a seed update was done after beta freeze
to fix an image build failure. A meta update was done just prior to
final freeze by Steve Langasek and this issue was not tested. This
issue was found by a user and brought up in IRC chat.
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