fix: network config for nix-darwin

machines/network.nix

@@ -5,7 +5,8 @@
 }: let
   inherit (pkgs.stdenv.hostPlatform) isLinux;
 in {
-  services = {
+  services =
+    {
       dnsmasq =
         if isLinux
         then {
@@ -30,8 +31,14 @@ in {
           addresses."test" = "127.0.0.1";
           bind = "127.0.0.1";
         };
-
-    stubby = lib.mkIf isLinux {
+    }
+    // (
+      if isLinux
+      then {
+        mullvad-vpn = {
+          enable = true;
+        };
+        stubby = {
           enable = true;
           settings = {
             resolution_type = "GETDNS_RESOLUTION_STUB";
@@ -50,7 +57,7 @@ in {
             ];
           };
         };
-
-    mullvad-vpn.enable = isLinux;
-  };
+      }
+      else {}
+    );
 }