refactor(systemModules): move modules into dirs

system/modules/audio/default.nix

@@ -0,0 +1,5 @@
+{
+  imports = [
+    ./pipewire
+  ];
+}

system/modules/audio/pipewire/default.nix

@@ -0,0 +1,20 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.systemModules.pipewire;
+in
+
+{
+  config = lib.mkIf cfg.enable {
+    hardware.pulseaudio.enable = lib.mkForce false;
+    services.pipewire = {
+      enable = true;
+      alsa.enable = true;
+      alsa.support32Bit = true;
+      pulse.enable = true;
+      jack.enable = true;
+      wireplumber.enable = true;
+    };
+  };
+}
+

system/modules/locale/default.nix

@@ -0,0 +1,19 @@
+{ lib, config, ... }: 
+
+let
+  cfg = config.systemModules.locale;
+in
+
+{
+  config = lib.mkIf cfg.enable {
+    i18n = {
+      defaultLocale = lib.mkDefault "en_US.UTF-8";
+      supportedLocales = lib.mkDefault [
+        "en_US.UTF-8/UTF-8"
+      ];
+    };
+    time.timeZone = lib.mkDefault "Pacific/Auckland";
+    location.provider = "geoclue2";
+    services.geoclue2.enable = true;
+  };
+}

system/modules/virtualisation/default.nix

@@ -0,0 +1,33 @@
+{ lib, config, pkgs, ... }:
+
+let
+  cfg = config.systemModules.virtualisation;
+in
+
+{
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      virt-manager
+      virt-viewer
+      spice 
+      spice-gtk
+      spice-protocol
+      win-virtio
+      win-spice
+      gnome.adwaita-icon-theme
+    ];
+  
+    virtualisation = {
+      libvirtd = {
+        enable = true;
+        qemu = {
+          swtpm.enable = true;
+          ovmf.enable = true;
+          ovmf.packages = [ pkgs.OVMFFull.fd ];
+        };
+      };
+      spiceUSBRedirection.enable = true;
+    };
+    services.spice-vdagentd.enable = true;
+  };
+}