This is Happy version 1.18, a parser generator for Haskell 98. http://www.haskell.org/happy/ http://hackage.haskell.org/cgi-bin/hackage-scripts/package/happy Happy is built using Cabal. First install GHC, then: $ runhaskell Setup.lhs configure $ runhaskell Setup.lhs build $ runhaskell Setup.lhs install Complete documentation can be found in the directory 'doc', in DocBook XML format. To format the documentation, the DocBook-Tools suite (see http://www.http://sourceware.cygnus.com/docbook-tools/) 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. Bug reports should be sent to marlowsd@gmail.com Happy Parsing! Simon.