2009/3/11 Peter Verswyvelen <[email protected]>:
> When I put
> {-# OPTIONS_GHC -Wall -Werror #-}
> in my source file, I don't get compiler (GHC) warnings about redundant
> language extensions that I enabled.
> It would be nice if the compiler gave warnings about this, since after
> refactoring, some language extensions might not be needed anymore, and hence
> should be removed since fewer language extensions mean more stable and
> portable code no?
> What do you think?
So you mean something like if you put {-# LANGUAGE
GeneralizedNewtypeDeriving #-} in a file, but never do newtype
deriving, it would warn you?
I have no idea how hard that'd be to implement, but that sounds kind
of cool. Useful for both refactoring and when you've inherited old
code.
Cheers,
C
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