A modern parser combinator library with convenient diagnostics

Version on this page:1.5.2
LTS Haskell 18.0:2.1.1
Stackage Nightly 2021-06-21:2.1.1
Latest on Hackage:2.1.1

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BSD-3-Clause licensed by Edward A. Kmett
Maintained by Edward A. Kmett
This version can be pinned in stack with:trifecta-1.5.2@sha256:a430876d18b10ca37476ef60970047d2ed2eb138d88d7693c842182472741bed,2899


Hackage 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