@picnoir Could you explain a bit the FOD-based dependencies fetchers (or send a link)? (I always read “FOD” is “FUD”; for those like me, we’re talking about fixed-output derivations. :-))
‘nixpkgs-review’ looks pretty cool indeed; the recently-added ‘mumi am’ helps, but it only does a tiny part of the job.
How does ‘nixpkgs-review’ figure out which packages (if any) need to be rebuilt to validate a PR?