Summary

I'm trying to add a slow job to prek that will only be run when explicitly specified, via prek run job_id. The reason I want to do this is because:

• we already use the manual stage to select a subset of jobs to run when a file is saved
• this tool exits 0 even if it makes changes to the repo, and wrapping it in prek gets us nice error handling

I assumed I could do stages: [], and the tool would never run in any stage unless explicitly specified on the command line. Instead, stages: [] seems to be equivalent to stages: ~; that is to say, it selects all stages instead of none.

Could prek support this empty stages list, or, alternatively, could we make custom stages? Basically I want two different manual stages so that I can do prek run --stage group_a or prek run --stage group_b (and crucially, I'd like to have checks in these groups that don't run during any other stage). I was hoping that clearing stages would get this to work.

Willing to submit a PR?

• Yes — I’m willing to open a PR to fix this.

Platform

Linux 5.15.0-135-generic x86_64 GNU/Linux

Version

prek 0.3.4

.pre-commit-config.yaml

Not relevant

Log file

Not relevant