Nothing. What is horrible is being forced to run it constantly every single time you make a tiny change to see if you messed it up or not. I don't need to do

Nothing. What is horrible is being forced to run it constantly every single time you make a tiny change to see if you messed it up or not. I don't need to do that when I am using haskell, I just have my repl session autmatically :reload when I save a file and it tells me if I broke anything.