Notify maintainers when dependency is out of range

[ysangkok]

Tested by:

1. lowering limits as explained in UserNotify.hs to 1 minute
2. installing postfix, configuring it for "Localhost delivery only" and changing my Hackage user's email to [email protected]
3. enable the notification on the preferences page, opt in to notifications
4. uploading transformers-0.5.6.2 (with patches to fix stricter cabal file validation)
5. uploading servant-0.19.1 (which doesn't accept transformers-0.6)
6. uploading transformers-0.6.0.6
7. after a minute, verified using mail(1) from the package bsd-mailx that the mail was delivered and the link works

[mitchellwrosen]

This would be an awesome feature! 🎉

[aaronallen8455]

What happens here if multiple packages by the same maintainer are affected by the same release? Ideally, I think the maintainer should get a single notification with a list of those packages.

[ysangkok]

Ok, I have pushed a commit which groups by userId and packageId. Now the email looks like this:

The dependency transformers-0.6.0.2 has been updated.

You have requested to be notified when a dependency isn't accepted by any of your maintained packages.

These are your packages that require transformers but don't accept 0.6.0.2:

servant-0.19.1

You can adjust your notification preferences at

http://gorm.local:8080/user/admin/notify

[gbaz]

@peterbecich any thoughts on why the nix flake test is consistently failing?

[ulysses4ever]

RE nix failure: it's due to Cabal update which didn't take into account the nix setup (#1186). I tried to fix it (ulysses4ever@aa00808) but bumped into a test suite failure (https://github.com/ulysses4ever/hackage-server/actions/runs/4682410347/jobs/8296230988) and i didn't go as far as figuring what's the best way to handle it (e.g. one could probably disable the tests).

[peterbecich]

Will look at the Nix error later today. Have you tried nix flake update? Thanks

[peterbecich]

Attempting to fix: #1201 seems to have worked

[ysangkok]

@gbaz I have now double checked everything and I think this is ready for merging!