haddock: A documentation-generation tool for Haskell libraries

[ bsd3, documentation, program ] [ Propose Tags ] [ Report a vulnerability ]

This is Haddock, a tool for automatically generating documentation from annotated Haskell source code. It is primary intended for documenting library interfaces, but it should be useful for any kind of Haskell code.

Haddock lets you write documentation annotations next to the definitions of functions and types in the source code, in a syntax that is easy on the eye when writing the source code (no heavyweight mark-up).

Haddock understands Haskell's module system, so you can structure your code however you like without worrying that internal structure will be exposed in the generated documentation. For example, it is common to implement a library in several modules, but define the external API by having a single module which re-exports parts of these implementation modules. Using Haddock, you can still write documentation annotations next to the actual definitions of the functions and types in the library, but the documentation annotations from the implementation will be propagated to the external API when the documentation is generated. Abstract types and classes are handled correctly. In fact, even without any documentation annotations, Haddock can generate useful documentation from your source code.


[Skip to Readme]

Flags

Manual Flags

NameDescriptionDefault
in-ghc-tree

Are we in a GHC tree?

Disabled

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info

Downloads

Versions [RSS] 0.8, 0.9, 2.0.0.0, 2.1.0, 2.2.0, 2.2.1, 2.2.2, 2.4.0, 2.4.1, 2.4.2, 2.5.0, 2.6.0, 2.6.1, 2.7.0, 2.7.1, 2.7.2, 2.8.0, 2.8.1, 2.9.0, 2.9.1, 2.9.2, 2.9.3, 2.9.4, 2.10.0, 2.11.0, 2.11.1, 2.12.0, 2.13.0, 2.13.1, 2.13.2, 2.13.2.1, 2.14.1, 2.14.2, 2.14.3, 2.15.0, 2.15.0.1, 2.15.0.2, 2.16.0, 2.16.1, 2.17.2, 2.17.4, 2.17.5, 2.18.1, 2.19.0.1, 2.20.0, 2.21.0, 2.22.0, 2.23.0, 2.23.1, 2.24.0, 2.24.1, 2.24.2, 2.25.0, 2.25.1, 2.26.0, 2.27.0, 2.28.0, 2.29.0, 2.29.1
Change log CHANGES.md
Dependencies base (>=4.13.0.0 && <4.14), haddock-api (==2.23.0) [details]
Tested with ghc >=8.8 && <8.9
License BSD-3-Clause
Copyright (c) Simon Marlow, David Waern
Author Simon Marlow, David Waern
Maintainer Alec Theriault <alec.theriault@gmail.com>, Alex Biehl <alexbiehl@gmail.com>, Simon Hengel <sol@typeful.net>, Mateusz Kowalczyk <fuuzetsu@fuuzetsu.co.uk>
Category Documentation
Home page http://www.haskell.org/haddock/
Bug tracker https://github.com/haskell/haddock/issues
Source repo head: git clone https://github.com/haskell/haddock.git
Uploaded by harpocrates at 2019-09-30T16:16:53Z
Distributions Arch:2.26.0, FreeBSD:2.16.1
Reverse Dependencies 10 direct, 17 indirect [details]
Executables haddock
Downloads 91785 total (166 in the last 30 days)
Rating 2.25 (votes: 2) [estimated by Bayesian average]
Your Rating
  • λ
  • λ
  • λ
Status Docs not available [build log]
All reported builds failed as of 2019-09-30 [all 2 reports]

Readme for haddock-2.23.0

[back to package description]

Haddock, a Haskell Documentation Tool Build Status

About haddock

See Description on Hackage.

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