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Welcome to the GHC Developer Wiki
This is the home for GHC developers, one place for all the resources related to developing GHC. If you're only interested in using GHC, then you probably want The GHC home page instead.
Please help us improve the information here. You can easily do this by editing the wiki directly. Just log in as user guest with password guest. The "Help/Guide" link at the top of every page gives a good description of the markup language etc.
For a complete list of local wiki pages, see TitleIndex.
Notices
- We will be running a Hackathon just before ICFP 2006 in Portland, oregon.
- Internships at Microsoft Research, Cambridge, working on Haskell and GHC
- Our current thinking about enhancing GHC's support for packages?.
Release cycle status
- The 6.6 release cycle has begun, see this message. Look at the tickets scheduled for 6.6.
- There will be a 6.4.3, to correct some serious platform-specific bugs in 6.4.2. Look at the tickets scheduled for 6.4.3.
- Development continues on the darcs repository, which will shortly be branched for the 6.6 release.
Downloading snapshots
- Download snapshots here. This link also gets you to a typeset user manual for the current snapshot.
The bug tracker
- View tickets: bug reports, tasks, feature requests
- Create a new: bug report, task, feature request
- View tickets assigned to me
- View tickets by milestone
- View tickets by OS
- View tickets by architecture
The Code
Our source code is kept in a collection of darcs repositories.
We recently transitioned from using CVS as our revision control system to darcs. The darcs repositories have full history, but in case you need to look at the CVS trees:
Getting Started
How to get started with hacking on GHC:
- Pick an easy bug report or task to work on
- Grab the latest sources
- Set up your build tree
- Useful information about GHC's architecture is in the commentary
- Hack away... ask questions on the cvs-ghc mailing list
- Submit patches back, using darcs send is the recommended way.
Mailing lists
GHC developers hang out on the cvs-ghc mailing list. This list also receives the following:
- checkins on the main ghc repository
- patches sent by darcs send
- nightly build reports
The traffic level varies quite a bit depending on how much activity there is.
Checkins for packages are reported on the cvs-libraries mailing list. To get mail from all the cvs-* lists, subscribe to the cvs-all mailing list (but don't post there, please).
Developer Documentation
This section collects information intended for people who would like to help work on GHC's source code. The most important pieces of documentation are:
- Building and Porting GHC
All information on getting the sources, building GHC, and porting GHC is here.
- The GHC Commentary
Documentation on the design, architecture, and implementation of GHC itself, with references to the actual source code.
