Parser Generator for Haskell
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Happy is a LALR(1) parser generator system for Haskell, similar to the tool `yacc' for C. Like `yacc', it takes a file containing an annotated BNF specification of a grammar and produces a Haskell module containing a parser for the grammar. Happy is flexible: you can have several Happy parsers in the same program, and several entry points to a single grammar. Happy can work in conjunction with a lexical analyser supplied by the user (either hand-written or generated by another program).

Active Releases Overview

Release Latest Released Version Version in Testing
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Upstream Summary



karsten's happy-1.19.5-3.fc23 tagged into f23 by karsten (ppc)

Details 2 days ago - 2015-06-27 13:41:31

karsten's happy-1.19.5-3.fc23 completed (ppc)

Details 2 days ago - 2015-06-27 13:40:37

karsten's happy-1.19.5-3.fc23 started building (ppc)

Details 2 days ago - 2015-06-27 13:33:09


Koji build happy-1.19.5-3.fc23.i686.rpm signed with sigkey '34ec9cba'

Details 4 days ago - 2015-06-25 21:28:16


Koji build happy-1.19.5-3.fc23.x86_64.rpm signed with sigkey '34ec9cba'

Details 5 days ago - 2015-06-25 04:46:01

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This Web Site is licensed under the GNU Affero General Public License. You may get sources for the current running code from these repositories: