GHC Status

This page summarises the state of play of GHC's release engineering efforts.

Recommended releases

We advise users to use the following recent releases:

Further details on our release policies can be found in on the Wiki. We release GHC on multiple platforms; the platforms page gives details.

GHC %9.2.3 is currently being prepared and should be available by end of May
GHC %9.4.1 is currently in the alpha stage and will be delivered in the next few months (June/July)

The release plans for previous releases are here:

We keep notes on compiler performance

Performance/Runtime for issues pertaining to the performance of code generated by GHC.
Performance/Compiler for issues pertaining to the performance of GHC itself.

We have several automated ways of monitoring GHC. Each has its own detailed description page.

Harbormaster is a part of Phabricator, which builds all GHC commits and incoming patches for testing.
The GHC builders build GHC every night on multiple platforms.
Travis also watches the repository for new commits (any branch) and validates them. https://travis-ci.org/ghc/ghc/builds
Our performance dashboard monitors changes in the performance of GHC itself, and of programs compiled by GHC, with a per-commit granularity.
Haskell.org server status page

Template Haskell has its own status page at TemplateHaskell/Status.

Summary of open tickets, listed by component.
Ticket statistics: the number of tickets created in a certain year, and their current status.
Status/SLPJ-Tickets is a curation of interesting tickets by SPJ
The GHC bug sweep attends to lost and forgotten tickets.
A list of all Phabricator patches
A list of all Phabricator patches that have been accepted

GHC's Trac is also used by the Haskell Core Libraries Committee to track progress on changes to the core libraries:

Active Core Libraries tickets (these tickets have "Component" set to "Core Libraries")

Here are biannual GHC status reports, published in the Haskell Communities and Activities Report