[thelambentonion]

> having a slow and stable industry base that favors backwards compatibility, stability and performance

I feel as if GHC addresses backwards compatibility and stability fairly well with new language features being gated by language pragmas. [1]

I don't write much Haskell in production, and what I do write isn't very performance intensive, but GHC's been pretty impressive vs. other compilers with languages at a similar level of abstraction.

[1] Foldable/Traversable in Prelude was a relatively large breaking change, and it was handled in a way that minimized the impact to existing code while still advancing the language.