nixos/britway: Add headscale

nixos/modules/tmproot.nix

@@ -476,6 +476,7 @@ in
           }
         ];
       })
+      (persistSimpleSvc "headscale")
     ]))
   ]);
 

nixos/modules/user.nix

@@ -38,7 +38,8 @@ in
               [ "wheel" "kvm" "dialout" ] ++
               (optional config.networking.networkmanager.enable "networkmanager") ++
               (optional config.virtualisation.libvirtd.enable "libvirtd") ++
-              (optional config.programs.wireshark.enable "wireshark");
+              (optional config.programs.wireshark.enable "wireshark") ++
+              (with config.services.headscale; (optional enable group));
             password = mkIf (cfg.passwordSecret == null) (mkDefault "hunter2");
             shell =
               let shell = cfg.homeConfig.my.shell;