Packages
Compile Haskell
To compile haskell, use
ghc -o <output-exe-name> <input-file.hs>
To run haskell like a script, use
runghc <input-file.hs>
Haskell Pacakges
To install packages in haskell, you need cabel:
brew install cabal-install
Cabal
First you need to update calab:
cabal update
And to install something:
cabal new-install json --leb