[Haskell-cafe] Props to cpphs; why so little used?

[Vanessa McHale]

1. It doesn’t actually get used by Cabal (as of several years): https://github.com/haskell/cabal/issues/4278

2. cabal-install does cross-compilation + preprocessors wrong. By default using ghc as preprocessor works.

I think some of the reasons for using cpphs no longer apply (e.g. hugs on windows)

Cheers,
Vanessa McHale

> On Sep 19, 2022, at 9:19 PM, Anthony Clayden <anthony.d.clayden at gmail.com> wrote:
> 
> Thank you to the author and maintainers of cpphs  https://hackage.haskell.org/package/cpphs <https://hackage.haskell.org/package/cpphs>
> 
> It has tightly-focussed functionality for what I wanted to do: a more haskell-friendly counterpart to cpp.
> 
> How to get it to behave as I wanted wasn't always obvious. I made some notes  https://stackoverflow.com/a/73768057/2840542 <https://stackoverflow.com/a/73768057/2840542>
> 
> Haskell libraries generally use cpp -- and then users complain how awkward it can be. I don't see that cpp does anything better/different vs cpphs -- that is, cpphs understands all the #if compiler_version logic. Then why isn't every library preferring cpphs?
> 
> 
> AntC
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