How do I automatically decline an old pull request?

[Jonathan Lamb]

We just had a situation where a PR was built and approved 2mo ago but never merged.   It was just merged and broke the build.  I'd like to just fence out aged PRs, rather than requiring a pre-merge commit hook that fails the build.  How can I do this?

[Aron Gombas [Midori]]

ScriptRunner is an app for Bitbucket that allows custom logic.

I am quite sure that you could create a 3-line Groovy script that would do something like this:

// check if the PR is older than 30 days
if((System.currentTimeMillis() - pullRequest.createdDate.time) > 30*24*60*60*1000) {
    // ... reject the PR
}