flent: Add passthru.updateScript

Author: mmlb

pkgs/by-name/fl/flent/package.nix

@@ -4,6 +4,7 @@
   fetchPypi,
   procps,
   qt5,
+  nix-update-script,
 }:
 python3Packages.buildPythonApplication rec {
   pname = "flent";
@@ -42,6 +43,7 @@ python3Packages.buildPythonApplication rec {
     )
   '';
 
+  passthru.updateScript = nix-update-script { };
   meta = {
     description = "FLExible Network Tester";
     homepage = "https://flent.org";