[b123400]

I have to echo your point on inconsistency.

Our company uses Haskell and the Haskell team love to define their own solutions which make things even more inconstant. For error handling they end up using an extensible type-level-list containing possible error types, embedded in an extensible effect monad. We also have list, array, vector, and our own collection types in the same place.

It feels like everyone want to make things better by using/making something new, instead of making them consistent.