{ config, pkgs, ... }:
let
  snd-usb-audio-module = pkgs.callPackage ./snd-usb-audio.nix {
    kernel = config.boot.kernelPackages.kernel;
  };
  upmixConfig = ''
    stream.properties = {
      channelmix.upmix = true
      channelmix.upmix-method = psd
    }
  '';
in {
  boot.extraModulePackages = [
    (snd-usb-audio-module.overrideAttrs (_: {
      patches = [ ./0001-Update-device-ID-for-PreSonus-1824c.patch ];
    }))
  ];

  environment.etc = {
    "pipewire/pipewire.conf.d/surround.conf".text = ''
      context.modules = [
        {
          name = libpipewire-module-loopback
          args = {
            node.description = "Genelec 4.1 Surround"
            capture.props = {
              node.name = "Genelec_Speakers"
              media.class = "Audio/Sink"
              audio.position = [ FL FR SL SR LFE ]
            }
            playback.props = {
              node.name = "playback.Genelec_Speakers"
              audio.position = [ AUX0 AUX1 AUX3 AUX4 AUX5 ]
              target.object = "alsa_output.usb-PreSonus_Studio_1824c_SC4E21110775-00.multichannel-output"
              stream.dont-remix = true
              node.passive = true
            }
          }
        }
      ]
    '';
    "pipewire/pipewire-pulse.conf.d/40-upmix.conf".text = upmixConfig;
    "pipewire/client-rt.conf.d/40-upmix.conf".text = upmixConfig;
  };
 }