n8n >= 2.37.0 demands pnpm >= 11.22.0 via engines.pnpm and serialises
patchedDependencies as plain scalars in pnpm-lock.yaml (same
lockfileVersion '9.0'), which pnpm 10 cannot install. The pinned nixpkgs
only ships pnpm_11 11.17.0, so:
- build with pnpm_11 + fetcherVersion 4 and relax the engines.pnpm gate
in package.json (relaxPnpmEngine) for both fetchPnpmDeps and the main
build; swap pnpm_10 -> pnpm_11 in nativeBuildInputs
- drop the workaround once nixpkgs ships pnpm >= 11.22
update.sh: detect ERR_PNPM_UNSUPPORTED_ENGINE /
ERR_PNPM_LOCKFILE_CONFIG_MISMATCH with actionable hints, sync
tests/n8n-overlay-test.nix expectations (checks were stale at 2.32.6),
guard against leftover fake-hash sentinels, and run from the repo root
so the relative nix --expr paths resolve.
Verified: n8n-overlay check green, full n8n 2.37.9 build green.
m3ta-chiron
c22cb5f3a7