Close stale PRs with GitHub actions

[iluuu1994]

As discussed in r11. Open question:

operations-per-run is currently configured to 30.

This option aims to limit the number of operations made with the GitHub API to avoid reaching the rate limit.

I'm not sure if we're subject to rate limiting. Leaving it as is would probably mean that stale PRs would only get closed over time instead of at once.

debug-only is enabled since I'm not sure if GitHub will run actions that are not merged yet. We might even leave it enabled after merging for a few days to see if it behaves correctly.

[cmb69]

Thank you! I'm generally fine with automatically closing inactive PRs, and the implementation seems to be okay. Maybe we should also echo the closed-issues-prs (an output param of actions/stale), or enable logging – or is there already a way to see which PRs would be affected?

I'm not sure if we're subject to rate limiting. Leaving it as is would probably mean that stale PRs would only get closed over time instead of at once.

I don't think this is a big problem. At least after a while, it's unlikely that we'll have more than 30 PRs to close per day.

We might even leave it enabled after merging for a few days to see if it behaves correctly.

Yeah, that looks reasonable.

[iluuu1994]

or is there already a way to see which PRs would be affected?

Yes, actions/stale already does pretty extensive logging. See my test repo:

https://github.com/iluuu1994/stale-prs/runs/4941250141?check_suite_focus=true

[iluuu1994]

I don't think this is a big problem. At least after a while, it's unlikely that we'll have more than 30 PRs to close per day.

I think this includes GET request, which makes me wonder if it will stop after a certain amount of pull requests (even if no action was performed). I guess that's something we can test only once it is merged. If that's the case we'll need to create an access token.

[iluuu1994]

I've adjust the configuration according to the feedback. Let me know if you're ok with this now.

[nikic]

Looks reasonable to me

[iluuu1994]

Thanks! I'll check the output of the action in the coming days and disable debug-only if everything is ok.