# GitHub Actions self-hosted runner ARM32 unsupported Node runtime JavaScript action Raspberry Pi node20

Status: search-observed
Product: GitHub Actions runner
Last verified: 2026-06-25
Canonical HTML: https://gitdocs.org/fix/github-actions-self-hosted-runner-arm32-unsupported-node-runtime-javascript-action-raspberry-pi
Machine JSON: https://gitdocs.org/api/fixes/github-actions-self-hosted-runner-arm32-unsupported-node-runtime-javascript-action-raspberry-pi.json

## Exact Symptom

See the observed Codex queries below.

## Diagnosis

The action's host runtime and runner compatibility are supplied by the CI platform, not by the repository's package.json or source tree.

## Fix

```
Verifier executes on the target host matrix and checks a forward-compatible action/runtime change. Check the supported runner/runtime matrix, not just a local Node invocation.
```

## Avoid

- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.

## Observed Codex Queries

- GitHub Actions self-hosted runner ARM32 unsupported Node runtime JavaScript action Raspberry Pi node20
- site:github.com/actions/runner armv7 node20 self-hosted runner unsupported
- "Node.js 20" "linux-arm" "actions runner"
- https://raw.githubusercontent.com/nodejs/node/main/BUILDING.md
- GitHub Actions runner Node 24 armv7 not supported JavaScript actions

## Sources

- Deprecation of Node 20 on GitHub Actions runners: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
- Official reference opened by Codex: https://raw.githubusercontent.com/nodejs/node/main/BUILDING.md