[Haskell-cafe] How to avoid keeping old data formats in your code?

[Marcin Mrotek]

(sorry, I think I responded only to Corentin the first time)

Hello,

Not sure if it completely solves your problem, but perhaps try Vinyl?
(https://hackage.haskell.org/package/vinyl) Adding new fields without
having to change the code that doesn't need them becomes much easier.

Regards,
Marcin