Hi!

I’m currently wrapping up my master’s thesis, which is about dependencies and breakages on Hackage.

In short, I’m analyzing all packages released onto Hackage during a certain window (currently the first quarter of 2025).

I’m using the Hackage package index and the Hackage API to collect metadata.
I’m using print-api[1] to attempt to detect breaking API changes between these releases and their predecessors.
I’m using HIE DB[2] to identify which symbols are actually being used by reverse dependencies.

My goal is to investigate versioning and dependency constraint practices, as well as package breakages.

I’m now at a point where I would like to evaluate my findings with experts in the Haskell community (such as experienced developers and package maintainers). If you could spare a bit of time I would love to hear your thoughts on my work. I’m thinking the questions could be sent via email, but if you prefer a call we could do that as well. You will be anonymous when any data is presented.

Thank you for whatever you can do!

All the best,

Jon

[1]: https://github.com/Kleidukos/print-api

[2]: https://github.com/haskell/HieDb