The indentation package

[ Tags: bsd3, library, parsing ] [ Propose Tags ]

Indentation sensitive parsing combinators for Parsec and Trifecta.

This package provides both the Parsec and Trifecta combinators. It is mainly useful for backward compatability with older versions of indentation. Individual backends are available in the indentation-parsec and indentation-trifecta packages.


Michael D. Adams and Ömer S. Ağacan. Indentation-sensitive parsing for Parsec. In Proceedings of the 2014 ACM SIGPLAN Symposium on Haskell, Haskell ’14, pages 121–132. ACM, New York, NY, USA, September 2014. ISBN 978-1-4503-3041-1. doi:10.1145/2633357.2633369.


Versions,,,, 0.2.1,,, 0.3,, 0.3.1, 0.3.2
Change log
Dependencies base (>=4.6 && <4.12), indentation-core (==, indentation-parsec (==, indentation-trifecta (==0.0.2), mtl (>=2.1), parsec (>=3.1.5), parsers (>=0.10 && <0.13), trifecta (>=1.4 && <1.8) [details]
License BSD3
Author Michael D. Adams <>
Maintainer Ömer Sinan Ağacan <> Aleksey Kliger <>
Category Parsing
Home page
Bug tracker
Source repo head: git clone
Uploaded Sun Jul 23 16:57:35 UTC 2017 by AlekseyKliger
Distributions NixOS:0.3.2
Downloads 2850 total (61 in the last 30 days)
Rating (no votes yet) [estimated by rule of succession]
Your Rating
  • λ
  • λ
  • λ
Status Docs available [build log]
Last success reported on 2017-07-23 [all 1 reports]
Hackage Matrix CI





Include indentation operators for Parsec


Include indentation operators for Trifecta


Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info


Maintainer's Corner

For package maintainers and hackage trustees