This is the twenty-seventh edition of our GHC activities report, which describes the work Well-Typed are doing on GHC, Cabal, HLS and other parts of the core Haskell toolchain. The current edition covers roughly the months of March 2025 to May 2025. You can find the previous editions collected under the ghc-activities-report tag.

Sponsorship

We offer Haskell Ecosystem Support Packages to provide commercial users with support from Well-Typed’s experts, while investing in the Haskell community and its technical ecosystem including through the work described in this report. To find out more, read our recent announcement of these packages in partnership with the Haskell Foundation. We need funding to continue this essential maintenance work!

Many thanks to our Haskell Ecosystem Supporters: Channable and QBayLogic; to our existing clients who also contribute to making this work possible: Anduril, Juspay and Mercury; and to the HLS Open Collective for supporting HLS release management.

Team

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