Crash when Python bindings for Qt 6 Multimedia not installed

[aaguilera]

On Debian stable (bookworm), nagstamon 3.16.2 crashes with the following error:

Traceback (most recent call last):
  File "/usr/bin/nagstamon", line 45, in <module>
    from Nagstamon.QUI import (APP,
  File "/usr/lib/python3/dist-packages/Nagstamon/QUI/__init__.py", line 35, in <module>
    from .qt import *
  File "/usr/lib/python3/dist-packages/Nagstamon/QUI/qt.py", line 209, in <module>
    from PyQt6.QtMultimedia import QAudioOutput, \
ModuleNotFoundError: No module named 'PyQt6.QtMultimedia'

The error can be solved by installing the python3-pyqt6.qtmultimedia package.

I think in Debian-based distros, the nagstamon package should have the python3-pyqt6.qtmultimedia package as a required dependency so it will be installed automatically with nagstamon.

[HenriWahl]

This is an interesting finding - the current package only contains dependencies for python3-pyqt5.qtmultimedia. So it becomes an interesting question, how to provide 2 different package files 🤔

[HenriWahl]

Every day one learns something new... the Debian package specs actually allow to define different package names depending on availability... so please try the last package when the CI action https://github.com/HenriWahl/Nagstamon/actions/runs/16624487630 was finished. The output is a one-size-fits-it-all-package which I tested on Debian 11 and 12. Depending on Qt6 being available it will be chosen, otherwise Qt5.

[aaguilera]

I'm not really sure how to test the particular package which is the outcome of the aforementioned CI action. But I just tested version 3.17-20250728 available in the https://nagstamon.de/repo/debian/latest repository (I hope it is the version you are referring to), and it seems to work fine.

$ apt show nagstamon
Package: nagstamon
Version: 3.17-20250728
Priority: optional
Section: utils
Maintainer: Python Applications Packaging Team <python-apps-team@lists.alioth.debian.org>
Installed-Size: 2102 kB
Depends: python3:any, libqt6multimedia6 | libqt5multimedia5-plugins, python3-bs4, python3-dbus.mainloop.pyqt6 | python3-dbus.mainloop.pyqt5, python3-lxml, python3-packaging, python3-pkg-resources, python3-pyqt6 | python3-pyqt5, pyqt6-dev-tools | pyqt5-dev-tools, python3-pyqt6.qtmultimedia | python3-pyqt5.qtmultimedia, python3-pyqt6.qtsvg | python3-pyqt5.qtsvg, python3-requests, python3-requests-kerberos, python3-psutil, python3-keyring, python3-ewmh, python3-arrow, python3-tzlocal
Recommends: python3-secretstorage
Homepage: https://nagstamon.de
Download-Size: 435 kB
APT-Sources: https://nagstamon.de/repo/debian/latest  Packages
Description: Nagios status monitor which takes place in systray or on desktop
 Nagstamon is a Nagios status monitor which takes place in systray or
 on desktop (GNOME, KDE) as floating statusbar to inform you in
 realtime about the status of your Nagios and some of its derivatives monitored network.
 It allows to connect to multiple Nagios, Icinga, Opsview, Centreon, Op5Monitor,
 Checkmk Multisite, Thruk, Zabbix and Zenoss servers. Events could be handled by instant access to failed hosts/services.

$ apt policy nagstamon
nagstamon:
  Instalados: 3.17-20250728
  Candidato:  3.17-20250728
  Tabla de versión:
 *** 3.17-20250728 500
        500 https://nagstamon.de/repo/debian/latest  Packages
        100 /var/lib/dpkg/status
     3.10.1+ds1-6 500
        500 http://deb.debian.org/debian bookworm/main amd64 Packages

Probably the bug is fixed now. Thanks!