bundlerUpdateScript: init and use (#64822)

pkgs/tools/backup/lvmsync/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, bundlerEnv, ruby, makeWrapper }:
+{ stdenv, bundlerEnv, ruby, bundlerUpdateScript, makeWrapper }:
 
 let
 
@@ -26,12 +26,14 @@ in stdenv.mkDerivation rec {
     makeWrapper ${env}/bin/lvmsync $out/bin/lvmsync
   '';
 
+  passthru.updateScript = bundlerUpdateScript "lvmsync";
+
   meta = with stdenv.lib; {
     description = "Optimised synchronisation of LVM snapshots over a network";
     homepage = http://theshed.hezmatt.org/lvmsync/;
     license = licenses.gpl3;
     platforms = platforms.all;
-    maintainers = with maintainers; [ jluttine ];
+    maintainers = with maintainers; [ jluttine nicknovitski ];
   };
 
 }