Add polybar config change reloading

common/fragments/graphical/polybar.nix

@@ -20,6 +20,9 @@ in {
       Install = { WantedBy = [ "graphical-session.target" ]; };
     };
 
+    xdg.configFile."polybar/config.ini".onChange =
+      "${pkgs.systemd}/bin/systemctl --user restart polybar.service";
+
     services.polybar = {
       enable = true;
       package = pkgs.polybarFull;