In the source of the memocombinators package, for example, no LANGUAGE pragma is explicitly mentioned and when trying to import it I get errors because the extension which supports the explicit forall statement is not included. How do I know which extension is required in this case ?
In the source of the memocombinators package, for example, no LANGUAGE pragma is explicitly
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memocombinators.cabalfile: http://hackage.haskell.org/packages/archive/data-memocombinators/0.4.1/data-memocombinators.cabal