A modern parser combinator library with convenient diagnostics

Version on this page:
LTS Haskell 17.11:2.1.1
Stackage Nightly 2021-05-15:2.1.1
Latest on Hackage:2.1.1

See all snapshots trifecta appears in

BSD-3-Clause licensed by Edward A. Kmett
Maintained by Edward A. Kmett
This version can be pinned in stack with:trifecta-,3088


Build Status

This package provides a parser that focuses on nice diagnostics.

Contact Information

Contributions and bug reports are welcome!

Please feel free to contact me through github or on the #haskell IRC channel on

-Edward Kmett