[Haskell-beginners] Can't remove old haskell

[Francesco Ariis]

On Mon, May 14, 2018 at 06:17:33PM -0400, Lawrence Bottorff wrote:
> λ> :t (<>)
> (<>) :: Semigroup a => a -> a -> a
> 
> I'm curious what this is. I'm guessing it's something that later versions
> can do?

Yes, since GHC 8.4 the operator `<>` is part of the Prelude. Congrats
on 8.4.2 working!