My 2 cents. I only played with haskell, but liked a lot the language. The only downside was the 'cabal' versus 'stack' build tools unclear status. The officia

My 2 cents. I only played with haskell, but liked a lot the language. The only downside was the 'cabal' versus 'stack' build tools unclear status. The official haskell.org site recommends installing both but I had incompatibility issues at the time.