Turns out the wireplumber configuration I was setting up is redundant
with the upstream default (which work better, becomes they use a quirks
database...).
It was also out-of-date due to the update to v0.5, which changed the
configuration format...
Let's consolidate all modules under one path, so that NixOS,
home-manager, and nix-darwin (if I ever end up using it down the line)
would go under the same folder.
Bruno BELANYI