vaultwarden webvault update fails with

npm error code ETARGET
npm error notarget No matching version found for @napi-rs/cli@3.5.1.
npm error notarget In most cases you or one of your dependencies are requesting
npm error notarget a package version that doesn't exist.
npm error A complete log of this run can be found in: /build/cache/_logs/2026-05-03T13_53_00_575Z-debug-0.log

ERROR: npm failed to install dependencies

I'm experimenting with adding a nix package to nexus mods' Vortex repo: https://github.com/MattSturgeon/Vortex/tree/nix-package

It uses pnpm, but my current package is failing with:

Executing pnpmConfigHook
~ /build/source
/build/source
Found 'pnpm' with version '11.1.2'
Using fetcherVersion: 3
Configuring pnpm store
Installing dependencies
[ERROR] Unknown option: 'frozen-lockfile'
Did you mean 'lockfile'? Use "--config.unknown=value" to force an unknown option.
For help, run: pnpm help add

ERROR: pnpm failed to install dependencies

which almost seems like --frozen-lockfile (a valid pnpm flag) is being passed to some other command?

An ugly way to find out what that flag is being passed to is to add

  preConfigure = ''
    set -x
  '';

This is what I got

pnpm install --offline --ignore-scripts '' --frozen-lockfile

I assume the random empty string is the culprit