nixos/hosts/kim/audio.nix

{ config, lib, pkgs, ... }:
{
  # Enable a passthrough from kim's line in port to her optical output.
  systemd.user.services.pipewire-patching = {
    enable = true;
    description = "pipewire patches";

    wantedBy = [ "default.target" ];
    after = [ "wireplumber.service" ];
    wants = [ "wireplumber.service" ];

    script = ''
      ${pkgs.pipewire}/bin/pw-link alsa_input.pci-0000_0e_00.4.analog-stereo:capture_FL alsa_output.pci-0000_0e_00.4.iec958-stereo:playback_FL
      ${pkgs.pipewire}/bin/pw-link alsa_input.pci-0000_0e_00.4.analog-stereo:capture_FR alsa_output.pci-0000_0e_00.4.iec958-stereo:playback_FR
    '';
  };
}