Dear Friends of Haskell, It is our pleasure to announce that 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! This year’s keynote speakers currently include Lennart Augustson (current holder of the record for most number of Haskell compiler implementations), Rebecca Skinner (author of “Effective Haskell”), and Brent Yorgey (of “Diagrams” and “Swarm” fame). Further keynote speaker and track announcements will be made on our website. For an idea of what to expect, have a look at last year’s schedule on https://zfoh.ch/zurihac2024/ and a video impression of last year’s event at https://youtu.be/SMIdDqZxrUk?si=Jvl1LpuanFJHglSC . We also welcome beginners or people unfamiliar to Haskell who are curious to learn more. There will be an organised beginners’ track as well as many mentors from the Haskell community happy to answer all your questions. ZuriHac Prelude: Two days prior to ZuriHac, the Haskell Foundation and OST will organize the Haskell Ecosystem Workshop (HEW) and the Haskell Implementors’ Workshop (HIW - formerly co-located with the ICFP) at the same venue. Details will be posted to the ZuriHac website as they become available. You can find more information about the event and register at https://zurihac.info https://zurihac.info/. The event is free for participants. This is only possible with the help of our generous supporters, who are currently: - The Haskell Foundation - IOHK - OST - Tweag - 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. Bank details for monetary donations can be found at https://zfoh.ch/#donations. We hope to see you there! The Zurich Friends of Haskell