[noble] quodlibet fails to start if libmodplug1 is not installed

[Åka Sikrom]

How to reproduce:
- boot Noble daily image (noble-desktop-amd64.iso from 2024-04-12 06:15)
- open GNOME Terminal
- Run 'apt update && apt install -y quodlibet'
- Launch 'Quod Libet' from GNOME application menu

Expected result:
Application starts and GUI is displayed.

Actual result:
Application does not start, and no graphical error message is displayed.

Suspected cause:
Debug output from 'quodlibet --debug' seems to suggest that quodlibet 4.6 depends on libmodplug.so.1, even though it is listed in their packaging guide under "Optional Runtime Dependencies" [1].

Workaround:
Install package 'libmodplug1' manually.

[1]: https://quodlibet.readthedocs.io/en/quodlibet-4.6/packaging.html

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.