pamac
uses /var/log/pacman.log
pamac-manager
GUI can access this log in View History
I think the problem with non-removal of pulseaudio-alsa
is from the dependencies for pipewire-alsa
Depends On : pipewire-session-manager
Optional Dependencies : --
Provides : pulseaudio-alsa
Replaces : --
Conflicts With : --
The package is marked as Provides pulseaudio-alsa
but IMO it should be marked as Replaces
If both packages are installed, /etc/alsa/conf.d/99-pulseaudio-default.conf will be read after /etc/alsa/conf.d/99-pipewire-default.conf (alphabetical order) so ALSA default sound server in aplay -L
would be set to PulseAudio rather than PipeWire
The dependency on pipewire-session-manager
probably needs to be changed/removed