Since I changed to the unstable channel (I like to live on the edge haha), I have been getting the following error when I try to run nixos-rebuild switch --upgrade:
Failed assertions:
- WirePlumber and pipewire-media-session can't be enabled at the same time.
I’m not sure how to fix it and I haven’t found much using Google.
I got the same error and was able to resolve it by commenting out the following line in my configuration.nix:
media-session.enable = true;
wireplumber is a superior replacement for pipewire’s own media session implementation. You can have either one of the following enabled but not both:
services.pipewire.wireplumber.enable = true;
services.pipewire.media-session.enable = true;