ANNOUNCE: GHC version 6.4.1

Simon Marlow simonmar at
Mon Sep 19 09:51:47 EDT 2005

    The (Interactive) Glasgow Haskell Compiler -- version 6.4.1

The GHC Team is pleased to announce a new patchlevel release of GHC.
This release contains a significant number of bugfixes relative to
6.4, so we recommend upgrading.  No library APIs have changed, so code
that was working with 6.4 should continue to work with 6.4.1.

Release notes are here:

How to get it

The easy way is to go to the WWW page, which should be self-explanatory:

We supply binary builds in the native package format for various
flavours of Linux and BSD, and in Windows Installer (MSI) form
for Windows folks.  Binary builds for other platforms are available
as a .tar.gz which can be installed wherever you want.  The source
distribution is also available from the same place.

Packages will appear as they are built - if the package for your
system isn't available yet, please try again later.


Haskell is a standard lazy functional programming language; the
current language version is Haskell 98, agreed in December 1998 and
revised December 2002.

GHC is a state-of-the-art programming suite for Haskell.  Included is
an optimising compiler generating good code for a variety of
platforms, together with an interactive system for convenient, quick
development.  The distribution includes space and time profiling
facilities, a large collection of libraries, and support for various
language extensions, including concurrency, exceptions, and foreign
language interfaces (C, whatever).  GHC is distributed under a
BSD-style open source license.

A wide variety of Haskell related resources (tutorials, libraries,
specifications, documentation, compilers, interpreters, references,
contact information, links to research groups) are available from the
Haskell home page (see below).

On-line GHC-related resources

Relevant URLs on the World-Wide Web:

GHC home page   
Haskell home page
comp.lang.functional FAQ

Supported Platforms

GHC supports the following platforms in this release:

  * x86 machines running Windows, common flavours of Linux, FreeBSD,
    OpenBSD, and NetBSD

  * x86_64 (aka amd64) machines running Linux

  * Macs running MacOS X

  * PowerPC machines running AIX or Linux

  * Sparc machines running Solaris.

Ports to other platforms are possible with varying degrees of
difficulty.  The Building Guide gives a complete run-down of what
ports work and how to go about porting to a new platform:

Mailing lists
We run mailing lists for GHC users and bug reports; to subscribe, use
the web interfaces at

There are several other haskell and ghc-related mailing lists on; for the full list, see

Please report bugs using our SourceForge page at

or send them to glasgow-haskell-bugs at

GHC users hang out on glasgow-haskell-users at  Bleeding
edge CVS users party on cvs-ghc at

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