Hello Jon, this sounds like an interesting and important project! Are you already aware of the Stability Working Group[1]? I'm sure they would be interested in your project, and may be able to help you find Haskell developers to interview. Tom [1] https://github.com/haskellfoundation/stability On Mon, May 04, 2026 at 12:44:15PM +0200, Jon Kristensen wrote:
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