@cloudfog@mastodon.online there are too many contributions to list. We (and every haskell company who uses nix) use https://github.com/input-output-hk/haskell.nix

The way they organise work is amazing too, you can look at virtually any PR to their main repos.

They also have an enormous system that can be reproducibly set up with https://github.com/input-output-hk/cardano-ops