I'm trying to understand what's going on here because multiple things make no sense.

my package.json in my nx monorepo says:

"engines": { "node": ">=20.19.0", "npm": "please-use-pnpm", "pnpm": "~10.10.0", "yarn": "please-use-pnpm" }

When the deploy runs railway detects:

Packages

──────────

node │ 18.20.8 │ package.json > engines > node (^18.15.0)

pnpm │ 7.33.7 │ pnpm-lock.yaml (7)

and then when the pnpm step happens it fails with:

ERR_PNPM_UNSUPPORTED_ENGINE  Unsupported environment (bad pnpm and/or Node.js version)

Your Node version is incompatible with "/@prisma/client/5.0.0_prisma@5.0.0".

Expected version: >=16.13

Got: v14.20.0

This is happening because the package's manifest has an engines.node field specified.

To fix this issue, install the required Node version.