Large change on folder structure AND used of import-tree.

modules/system/options/nixos/pipewire.nix

@@ -0,0 +1,23 @@
+{ lib, config, ... }:
+with lib;
+let
+  cfg = config.os.audio.pipewire;
+in
+{
+  options.os.audio.pipewire = {
+    enable = mkEnableOption "System pipewire service";
+  };
+  config = mkIf cfg.enable {
+
+    security.rtkit.enable = true;
+    services.pulseaudio.enable = false;
+
+    services.pipewire = {
+      enable = true;
+      alsa.enable = true;
+      pulse.enable = true;
+      alsa.support32Bit = true;
+    };
+
+  };
+}