[Haskell-cafe] Library for package preprocessing

[Carlo Nucera]

Hi all, I'm writing a tool to analyze source code of a package, which uses
haskell-src-extra. As copied from hackage, libraries may contain some extra
stuff (for example, cpp directives). What is the modern way to preprocess the
package (configuring for the environment, running the cpp ecc) to obtain code
which is guaranteed to be parsed by haskell-src-extra?

Ideally I'd like to leave most of the logic for this part outside of the
package. Could you point me towards some libraries doing a similar thing?

Best regards