playwright 0 -> 1
attrpath: playwright
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoSha256 or cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorSha256 or vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] 
Going to be running update for following packages:
 - playwright-1.40.0

Press Enter key to continue...
Running update for:
 - playwright-1.40.0: UPDATING ...
 - playwright-1.40.0: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/development/web/playwright-test/default.nix b/pkgs/development/web/playwright-test/default.nix
index d9c0daef7834..b795f708f189 100644
--- a/pkgs/development/web/playwright-test/default.nix
+++ b/pkgs/development/web/playwright-test/default.nix
@@ -2,7 +2,7 @@
 
 {pkgs ? import <nixpkgs> {
     inherit system;
-  }, system ? builtins.currentSystem, nodejs ? pkgs."nodejs_18"}:
+  }, system ? builtins.currentSystem, nodejs ? pkgs."nodejs_14"}:
 
 let
   nodeEnv = import ./node-env.nix {

No auto update branch exists
Old version 1.40.0" not present in master derivation file with contents: # This file has been generated by node2nix 1.11.1. Do not edit!

{pkgs ? import <nixpkgs> {
    inherit system;
  }, system ? builtins.currentSystem, nodejs ? pkgs."nodejs_18"}:

let
  nodeEnv = import ./node-env.nix {
    inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
    inherit pkgs nodejs;
    libtool = if pkgs.stdenv.isDarwin then pkgs.darwin.cctools else null;
  };
in
import ./node-packages.nix {
  inherit (pkgs) fetchurl nix-gitignore stdenv lib fetchgit;
  inherit nodeEnv;
}