Haddock, a Haskell Documentation Tool

About haddock

Source code documentation

Full documentation can be found in the doc/ subdirectory, in reStructedText format format.

Project overview

This project consists of three packages:

haddock
haddock-api
haddock-library

haddock

The haddock package provides the haddock executable. It is implemented as a tiny wrapper around haddock-api's Documentation.Haddock.haddock function.

haddock-api

haddock-api contains the program logic of the haddock tool. The haddocks for the Documentation.Haddock module offer a good overview of haddock-api's functionality.

haddock-library

haddock-library is concerned with the parsing and processing of the Haddock markup language.

Contributing

Please create issues when you have any problems and pull requests if you have some code.

Hacking

To get started you'll need a latest GHC release installed.

Clone the repository:

  git clone https://github.com/haskell/haddock.git
  cd haddock

and then proceed using your favourite build tool.

Using `cabal new-build`

cabal new-build -w ghc-8.6.1
# build & run the test suite
cabal new-test -w ghc-8.6.1 all

Using Cabal sandboxes

cabal sandbox init
cabal sandbox add-source haddock-library
cabal sandbox add-source haddock-api
cabal sandbox add-source haddock-test
# adjust -j to the number of cores you want to use
cabal install -j4 --dependencies-only --enable-tests
cabal configure --enable-tests
cabal build -j4
# run the test suite
export HADDOCK_PATH="dist/build/haddock/haddock"
cabal test

Using Stack

stack init
stack build
# run the test suite
export HADDOCK_PATH="$(stack exec which haddock)"
stack test

Git Branches

If you're a GHC developer and want to update Haddock to work with your changes, you should be working on ghc-head branch. See instructions at https://ghc.haskell.org/trac/ghc/wiki/WorkingConventions/Git/Submodules for an example workflow.

Updating `html-test`

When accepting any changes in the output of html-test, it is important to use the --haddock-path option. For example:

cabal new-run -- html-test --haddock-path $(find dist-newstyle/ -executable -type f -name haddock) --accept

schell/haddock