How to avoid “‘main’ is not defined in module ‘Main’” when using syntastic

Question

I\'m trying to write a module in Haskell. It does not have a main because it\'s not meant to be a stand-alone program.

I just started using syntastic, and i

Answer 1

Though it is a late answer, for the sake of completion adding the following will stop the warning.

main :: IO ()
main = return ()