Hi! I just installed NixOS yesterday (tried nix on arch since a week or so ago and I loved the concept)

After installing with the generated config, my system was working great with audio but after making some changes and doing nixos-rebuild --upgrade, pulseaudio broke. (On nixos-unstable) I tried most troubleshooting but haven't gotten far. (Purged ~/.config/pulse and ~/.pulse checked alsamixer which does show my cards/devices, shutting down and reloading pulseaudio and now checking all sorts of logs)

So far I have been able to narrow it down to a bug on the derivation. (Maybe?)

> E: [pulseaudio] ltdl-bind-now.c: Failed to open module /nix/store/yfdfd84nyg84ylr7qmvca2kd1y5xri3w-pulseaudio-12.2/lib/pulse-12.2/modules/module-alsa-card.so: /nix/store/yfdfd84nyg84ylr7qmvca2kd1y5xri3w-pulseaudio-12.2/lib/pulse-12.2/modules/libalsa-util.so: undefined symbol: pa_alsa_ucm_device_update_available
> E: [pulseaudio] module.c: Failed to open module "module-alsa-card".

As far as I understand it, this is an error/bug of the built artifact. Should I get an older version/derivation and reporting this in nixpgs as a bug?