What measures can you take to ensure a pull request is not merged before atlantis applies all plans? All things I can think of interfere with the

apply_requirements: [mergeable]

requirement.

this param is probably what you need https://www.runatlantis.io/docs/server-configuration.html#gh-allow-mergeable-bypass-apply

Oh awesome, didn't see this one! Thanks ❤️

Note that its only for GitHub and only works with branch protection rules