happy

Happy is a parser generator for Haskell

http://www.haskell.org/happy/

Version on this page:	1.19.4@rev:1
LTS Haskell 23.25:	2.0.2
Stackage Nightly 2025-06-16:	2.1.5
Latest on Hackage:	2.1.5

See all snapshots happy appears in

BSD-3-Clause licensed by Andy Gill and Simon Marlow

Maintained by Simon Marlow

This version can be pinned in stack with:happy-1.19.4@sha256:394b39b57e8a8a8d2052bc5f42e53f4880904619ef17f5cc98601b0ae132a824,4247

Module documentation for 1.19.4

There are no documented modules for this package.

Depends on 4 packages(full list with versions):

array, base, containers, mtl

Happy is a parser generator for Haskell. Given a grammar specification in BNF, Happy generates Haskell code to parse the grammar. Happy works in a similar way to the yacc tool for C.