Haskell is very good at writing correct parsers easily—that's one thing. This is part of the reason it was chosen as an early perl6 test bed via pugs. Rust is g

Haskell is very good at writing correct parsers easily—that's one thing. This is part of the reason it was chosen as an early perl6 test bed via pugs. Rust is getting there (I'm a big fan of the lalrpop library) but the ecosystem is no where near as mature as Haskell's for feature-complete libraries. The pace of development of the rust ecosystem is mind-boggling, though—I never guessed that rust would have taken off in popularity as much as it has.