happy: Happy is a parser generator for Haskell
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.
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Downloads
- happy-2.1.7.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
Maintainer's Corner
For package maintainers and hackage trustees
Candidates
| Versions [RSS] | 1.16, 1.17, 1.18, 1.18.1, 1.18.2, 1.18.4, 1.18.5, 1.18.6, 1.18.7, 1.18.8, 1.18.9, 1.18.10, 1.18.11, 1.19.0, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.19.5, 1.19.6, 1.19.7, 1.19.8, 1.19.9, 1.19.10, 1.19.11, 1.19.12, 1.20.0, 1.20.1, 1.20.1.1, 1.21.0, 2.0, 2.0.1, 2.0.2, 2.1, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5, 2.1.6, 2.1.7 (info) |
|---|---|
| Change log | ChangeLog.md |
| Dependencies | array, base (>=4.9 && <5), containers (>=0.4.2), happy-lib (==2.1.7), mtl (>=2.2.1) [details] |
| Tested with | ghc ==9.12.2, ghc ==9.10.2, ghc ==9.8.4, ghc ==9.6.7, ghc ==9.4.8, ghc ==9.2.8, ghc ==9.0.2, ghc ==8.10.7, ghc ==8.8.4, ghc ==8.6.5, ghc ==8.4.4, ghc ==8.2.2, ghc ==8.0.2 |
| License | BSD-2-Clause |
| Copyright | (c) Andy Gill, Simon Marlow |
| Author | Andy Gill and Simon Marlow |
| Maintainer | https://github.com/haskell/happy |
| Category | Development |
| Home page | https://www.haskell.org/happy/ |
| Bug tracker | https://github.com/haskell/happy/issues |
| Source repo | head: git clone https://github.com/haskell/happy.git |
| Uploaded | by sgraf812 at 2025-08-16T18:37:13Z |
| Distributions | Arch:2.1.6, Debian:1.19.12, Fedora:2.0.2, FreeBSD:1.19.5, LTSHaskell:2.1.7, NixOS:2.0.2, Stackage:2.1.7, openSUSE:2.1.7 |
| Reverse Dependencies | 1 direct, 0 indirect [details] |
| Executables | happy |
| Downloads | 199154 total (109 in the last 30 days) |
| Rating | 1.25 (votes: 1) [estimated by Bayesian average] |
| Your Rating | |
| Status | Docs not available [build log] All reported builds failed as of 2025-08-16 [all 2 reports] |
Readme for happy-2.1.7
[back to package description]Happy
Happy is a parser generator for Haskell 98 (and later).
Happy Parsing!
Documentation
Documentation is hosted on Read the Docs:
For basic information of the sort typically found in a read-me, see the following sections of the docs: