Does actions/checkout work on Runnable?
Yes, for v4 – v6. Runnable implements this action itself rather than delegating to GitHub Actions, so the answer is a specific contract rather than a general claim. A reference outside those versions is reported as runtime-dependent instead of fully compatible, because parity is only proven where it has been tested.
Inputs Runnable implements
Any input not on this list is rejected during validation rather than silently ignored.
Inputs Runnable does not implement
Using one of these fails the compatibility check with a named reason before anything runs.
Details worth knowing
- Any input outside this list is rejected rather than ignored.
- github-server-url must be https://github.com or the github.server_url expression; custom hosts are not supported.
- A ref outside v4-v6 is reported runtime-dependent rather than Full, because parity is only proven for those contracts.
Check the workflow you actually have
This page describes one action. The checker reads your whole file and tells you what would run, what would not, and what it would cost. No account is required, workflow source is never retained, and only a de-identified compatibility summary is stored to improve Runnable.
Check a workflowGenerated from Runnable's parity contract, which is the same source the compatibility checker enforces at validation time.