Change keybind to switch keyboard layout

modules/nix/common.nix

@@ -42,6 +42,9 @@ in
                         (mkIf (cfg.caps == "ctrl-esc") { capslock = "overload(control, esc)"; })
                         (mkIf (cfg.caps == "esc") { capslock = "esc"; })
                     ];
+                    altgr = mkMerge [
+                        { "-" = "macro(C-S-u 2 0 1 4 space)"; }
+                    ];
                 };
             };
         };