nixos-config/modules/nixos/mumble.nix

{ config, pkgs, ... }:

{
  services.murmur = {
    enable = true;
    environmentFile = "${config.services.murmur.stateDir}/secrets.env";
    openFirewall = true;
    autobanAttempts = 3;
  };
  environment.systemPackages = [ pkgs.mumble ];

  services.pipewire.extraConfig.pipewire = {
    "97-null-sink"."context.objects" = [
      {
        factory = "adapter";
        args = {
          "factory.name" = "support.null-audio-sink";
          "node.name" = "Null-Sink";
          "node.description" = "Null Sink";
          "media.class" = "Audio/Sink";
          "audio.position" = "FL,FR";
        };
      }
      {
        factory = "adapter";
        args = {
          "factory.name" = "support.null-audio-sink";
          "node.name" = "Null-Source";
          "node.description" = "Null Source";
          "media.class" = "Audio/Source";
          "audio.position" = "FL,FR";
        };
      }
    ];

    "98-virtual-mic"."context.modules" = [
      {
        name = "libpipewire-module-loopback";
        args = {
          "audio.position" = "FL,FR";
          "node.description" = "Mumble as Microphone";
          "capture.props" = {
            # Mumble's output node name.
            "node.target" = "Mumble";
            "node.passive" = true;
          };
          "playback.props" = {
            "node.name" = "Virtual-Mumble-Microphone";
            "media.class" = "Audio/Source";
          };
        };
      }
    ];
  };
}