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

Thank you to the author and maintainers of 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 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