Nixpkgs: python37Packages.apache-airflow no longer builds on master

[bhipple]

Starting an issue to track, as this may involve several steps to fix.

First problem is that dependencies are broken from a pytest upgrade:
https://github.com/NixOS/nixpkgs/pull/89586

CC @ingenieroariel @jonringer @FRidh

[ingenieroariel]

@bhipple thanks for taking on this - is there something we can wire up to the regular tests to detect breakage like this automatically in the future?

[bhipple]

I think Hydra is OK, with nixpkgs-review on PRs and some care.

Once we get it fixed, it'd also be nice to upgrade to the latest 1.10.10 version.

[jonringer]

@bhipple thanks for taking on this - is there something we can wire up to the regular tests to detect breakage like this automatically in the future?

hydra can be configured to issue emails to maintainers. I don't remember the history as to why it was disabled

[FRidh]

It would sent mails not just when your package build fails, but also if a dependency failed, causing mass spam in case of bigger failures on staging.

[jonringer]

@FRidh is there a way to enable it per jobset, so that it would only ping people for nixpkgs-unstable?

[drewrisinger]

I would appreciate something like this Hydra email. I don't constantly rebuild against nixpkgs-unstable, and occasionally find that my packages are broken due to upstream changes, which I could have fixed earlier.

[jonringer]

@drewrisinger I guess it was disabled as it was causing mass spam