[Haskell-cafe] Display an inferred type during compilation

Corentin Dupont corentin.dupont at gmail.com
Sat Apr 27 18:55:16 CEST 2013

Hi Cafe,
can I ask the compiler to display the type of an inferred value during
compile time?
It would be great if I can output a string during compilation with the type.
A little bit like running :type in GHCi, but without GHCi... Because
running GHCi is sometime painful (I have to clean my code first).

I'm thinking of something like:

main :: IO ()
main = do
   a <- someCode
   displayTypeAtCompileTime a
   return ()

$ ghc -c test.hs
test.hs:4:3: your type is: Foo

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