Happy is a parser generator for Haskell 98 (and later).
Happy is built using Cabal. First install GHC, then:
$ cabal configure
$ cabal build
$ cabal install
Complete documentation can be found in the directory 'doc', in DocBook XML format. To format the documentation, the DocBook-Tools suite (see http://wiki.docbook.org/DocBookTools) provides all the bits & pieces you need. Alternatively, pre-formatted documentation is available from Happy's homepage (URL above).
The directory 'examples' contains some example parsers that use Happy.
For information on copying and distributing this program, see the file LICENSE in this directory.
Bugs should be reported at: https://github.com/simonmar/happy/issues
Happy Parsing!
Simon.