cpphs

A liberalised re-implementation of cpp, the C pre-processor.

http://projects.haskell.org/cpphs/

LTS Haskell 23.22:	1.20.9.1@rev:1
Stackage Nightly 2025-05-18:	1.20.9.1@rev:2
Latest on Hackage:	1.20.9.1@rev:2

See all snapshots cpphs appears in

LicenseRef-LGPL licensed and maintained by Malcolm Wallace

This version can be pinned in stack with:cpphs-1.20.9.1@sha256:ace77a2e5ec1d18136ef80a07606c983eafc1d23f184761bb9f44e70cdd8aa6f,3230

Module documentation for 1.20.9.1

Language
- Language.Preprocessor
  - Language.Preprocessor.Cpphs
  - Language.Preprocessor.Unlit

Depends on 4 packages(full list with versions):

base, directory, polyparse, time

Used by 3 packages in nightly-2025-05-18(full list with versions):

hlint, hse-cpp, HTF

Cpphs is a re-implementation of the C pre-processor that is both more compatible with Haskell, and itself written in Haskell so that it can be distributed with compilers.

This version of the C pre-processor is pretty-much feature-complete and compatible with traditional (K&R) pre-processors. Additional features include: a plain-text mode; an option to unlit literate code files; and an option to turn off macro-expansion.