[Well-Typed Blog] Haskell ecosystem activities report: December 2025–February 2026

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I’m very sad to see @mpickering leave the GHC team.

His contributions are countless, but I specifically remember his relentless work on GHC performance and debugging and how much of an impression that left on us.

In terms of project management he’s always been a voice of caution, proceeding with great care.

I also enjoyed our rather recent interaction, where we’ve been discussing on how to overcome issues of open source coordination and culture.

I hope there was enough time to at least transfer some of his expertise to the next generation of GHC developers, because it is a big loss.

Thanks Matt and all the best for your new endeavors!

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I am very sad too. Mathew, your GHC expertise is so deep, and you have contributed so much over many years. I’m particularly sad that we have not had time to fully explore your ideas about typed Template Haskell.

Thank you so much. We will miss you sorely.

But I’m sure that you will enjoy new green pastures. Have fun!

Simon

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I’d like to thank Matthew for eventlog2html in particular which is a really convenient way of exploring the instrumentation from GHC!

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