dust: add updateScript

pkgs/by-name/du/dust/package.nix

@@ -4,6 +4,7 @@
   rustPlatform,
   installShellFiles,
   versionCheckHook,
+  nix-update-script,
 }:
 
 rustPlatform.buildRustPackage (finalAttrs: {
@@ -42,6 +43,8 @@ rustPlatform.buildRustPackage (finalAttrs: {
   versionCheckProgramArg = "--version";
   doInstallCheck = true;
 
+  passthru.updateScript = nix-update-script { };
+
   meta = {
     description = "du + rust = dust. Like du but more intuitive";
     homepage = "https://github.com/bootandy/dust";