Haskell Weekly

Welcome to another issue of Haskell Weekly! Haskell is a safe, purely functional programming language with a fast, concurrent runtime. This is a weekly summary of what’s going on in its community.

Featured

• AmeriHac 2026 retrospective by José Manuel Calderón Trilla

  This past weekend we held the first ever AmeriHac, a ZuriHac-style hackathon for the North American Haskell community. When I first proposed the idea of a North American event to the HF board, my criterion for success was simple: 100 attendees. We had 110, so by that measure we succeeded. But numbers are only part of the story, of course.

• hs-bindgen 0.1-alpha release by Edsko de Vries

  Well-Typed are delighted to announce a release preview of hs-bindgen, a tool for automatic Haskell binding generation from C header files.

• My experience at AmeriHac by Sai Divvela

  This past weekend, I participated in the inagural North American Haskell Hackathon - AmeriHac! It was so much fun, despite not even knowing a single bit of Haskell going into it. I wanna write up a bit about my experience, some lessons I learned and things I hope to do in the future.

• pandoc 3.9 (+ wasm!) by Albert

  Pandoc 3.9 was released yesterday. This is the first release with an official wasm version.

In brief

• 30% faster compile times with GHC for parallel builds #15378 by _query

  This patch is looking for some more reviewers. Also for devs with a big haskell project that have the necessary infrastructure in place: It would be nice if you could test out the patch and report back what impact you are seeing.

• CPL 0.2.0: a categorical programming language (implemented in Haskell) now runs in your browser via WebAssembly by msakai

  In this release, CPL now runs in your browser via WebAssembly with no installation required.

• I made my first compiler! BechML - A friendly higher-kinded, functional scripting language by Matt Hunzinger

  BechML is a pure, higher-kinded, functional programming language that compiles to JS for scripting.

• Preview: Build Mac apps with Haskell by semigroup

  I’ve wanted to do GUI things on the Mac using Haskell for ages, but never quite managed to crack the problem.

Show & tell

• Distributors - Unifying Parsers, Printers & Grammars by Eitan Chatav

  Distributors provides mathematically inspired abstractions for coders to write parsers that can also be inverted to printers.

Call for participation

• ZuriHac 2026 Registration Open

  The ZuriHac 2026 registration is now open! ZuriHac 2025 will take place Saturday 6 June – Monday 8 June 2026 as a physical event at the Rapperswil-Jona campus of the OST, Switzerland. Please (register)[https://zureg.zfoh.ch/register] ASAP in case you have not already. We hope to see you there!