Added networkmanager

modules/networkmanager/default.nix

@@ -0,0 +1,25 @@
+{
+  lib,
+  config,
+  ...
+}:
+
+with lib;
+let
+  cfg = config.modules.power-saving;
+in
+{
+  options.modules.networkmanager = {
+    enable = mkEnableOption "networkmanager";
+  };
+
+  config = mkIf cfg.enable {
+    machine.sudo-groups = [ "networkmanager" ];
+    networking = {
+      networkmanager = {
+        enable = true;
+        wifi.powersave = true;
+      };
+    };
+  };
+}