On 24 January 2011 17:20, Jane Ren <[email protected]> wrote:
> When I try this, I get
> "AstWalker: panic! (the 'impossible' happened)
> (GHC version 7.0.1 for x86_64-apple-darwin):
> lexical error at character 'i'
It looks like you need to add the CPP extension to the DynFlags:
setSessionDynFlags dflags { extensionFlags = Opt_Cpp : extensionFlags dflags }
You might have to iterate a few times to find the correct set of flags.
Cheers,
Max
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