Dear Friends of Haskell, The schedule for ZuriHac 2025 is now online on https://zurihac.info ! This year’s keynote speakers include Lennart Augustson (who will talk about “MicroHs”, a Haskell compiler with a runtime system so small that is can run on a microcontroller), Tom Ellis (author of the Bluefin effect system), and Brent Yorgey (of “Diagrams” and “Swarm” fame, who will talk about competitive programming in Haskell). We also have a track on Category Theory, given by Richard Southwell (of YouTube fame), as well as a track on WASM+Haskell and Nix+Haskell given by Cheng Shao and Julian Arni respectively. The Beginners’ Track this year will be given by Andres Löh. Our website https://zurihac.info contains further information on keynotes and tracks and will be updated regularly. In case you have not registered yet, please do so ASAP via the link https://zureg.zfoh.ch/register (also on our website). Although registration is free for participants, it allows us to plan appropriately for the event: Jane Street is generously hosting a BBQ on Saturday evening, and we want to get the number of grillables correct. For the uninitiated: ZuriHac 2025 will take place Saturday 7 June – Monday 9 June 2025 as a physical event at the Rapperswil-Jona campus of the OST Eastern Switzerland University of Applied Sciences. ZuriHac is the biggest Haskell community event in the world: a completely free, three-day grassroots coding festival co-organized by the Zürich Friends of Haskell and the OST Eastern Switzerland University of Applied Science. It is not your standard conference with papers and presentations, but features fantastic keynotes, hands-on tracks, hacking on many of your favourite projects, and of course lots of socializing! Organizing ZuriHac would not be possible without the support of our sponsors and partners, including: * The Haskell Foundation * IOHK * Jane Street * OST * Tweag * Type Theory Forall * Well-Typed In case you would like to support ZuriHac, as a company or as an individual, please get in touch with us, we would be grateful: https://zfoh.ch/#donations. We hope to see you there! The Zurich Friends of Haskell