ZuriHac 2025
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!
ZuriHac takes place Saturday 7 June — Monday 9 June 2025 as a physical event at the beautiful Rapperswil-Jona campus of OST located right next to lake Zürich. We hope to see you there!
Speakers
Rebecca is a Haskell programmer at Mercury and the author of Effective Haskell. She currently chairs the Haskell.org committee.
Lennart Augustsson works at Epic Games and was previously a lecturer at Chalmers University of Technology. He likely holds the world record for the most Haskell compiler implementations.
Brent Yorgey is an assistant professor at Hendrix College. He is one of the people behind diagrams, which you may have used before. Currently, he is working on a 2D programming game called Swarm.
Sandy Maguire is a prolific Haskell developer with strong opinions on Doing Functional Programming Right. He is the author of Thinking with Types, Algebra-Driven Design, and the polysemy library.
Schedule
ZuriHac is primarily a community event and a hackathon, rather than a conference. Aside from the talks and tracks, attendees are encouraged to work together on all sorts of Haskell-related open-source projects and socialize. Trying to attend everything may a bit too much, just pick what you find interesting!
This schedule is tentative and minor changes may still need to happen as we get closer to the event.
| Start | End | Title | Link | Kind |
|---|---|---|---|---|
| 2025-06-07T09:00:00+02:00 | 2025-06-07T10:00:00+02:00 | Registration Opens | admin | |
| 2025-06-07T10:00:00+02:00 | 2025-06-07T11:00:00+02:00 | Talk | talk | |
| 2025-06-07T11:00:00+02:00 | 2025-06-07T12:00:00+02:00 | Opening Presentation & Project Pitches | admin | |
| 2025-06-07T12:00:00+02:00 | 2025-06-07T14:00:00+02:00 | Food Truck | food | |
| 2025-06-07T13:30:00+02:00 | 2025-06-07T15:30:00+02:00 | Beginner Track | beginner | |
| 2025-06-07T14:00:00+02:00 | 2025-06-07T16:00:00+02:00 | Advanced Track | advanced | |
| 2025-06-07T17:00:00+02:00 | 2025-06-07T18:00:00+02:00 | Talk | talk | |
| 2025-06-07T18:00:00+02:00 | 2025-06-07T20:30:00+02:00 | Food Truck | food | |
| 2025-06-08T10:00:00+02:00 | 2025-06-08T11:00:00+02:00 | Talk | talk | |
| 2025-06-08T12:00:00+02:00 | 2025-06-08T14:00:00+02:00 | Food Truck | food | |
| 2025-06-08T13:30:00+02:00 | 2025-06-08T15:30:00+02:00 | Beginner Track | beginner | |
| 2025-06-08T14:00:00+02:00 | 2025-06-08T16:00:00+02:00 | Advanced Track | advanced | |
| 2025-06-08T17:00:00+02:00 | 2025-06-08T18:00:00+02:00 | Talk | talk | |
| 2025-06-08T18:00:00+02:00 | 2025-06-08T20:00:00+02:00 | BBQ by Jane Street | food | |
| 2025-06-09T10:00:00+02:00 | 2025-06-09T11:00:00+02:00 | Talk | talk | |
| 2025-06-09T12:00:00+02:00 | 2025-06-09T14:00:00+02:00 | Food Truck | food | |
| 2025-06-09T13:00:00+02:00 | 2025-06-09T15:00:00+02:00 | Advanced Track | advanced | |
| 2025-06-09T15:30:00+02:00 | 2025-06-09T16:15:00+02:00 | Project presentations | admin | |
| 2025-06-09T16:15:00+02:00 | 2025-06-09T17:00:00+02:00 | Closing | admin |
ZuriHac Prelude
The Haskell Ecosystem Workshop and the Haskell Implementors’ Workshop will take place on the two days just prior to ZuriHac 2025, June 5 & 6 2025. Organised by the Haskell Foundation and the OST Eastern Switzerland University of Applied Sciences in Rapperswil, these events are co-located with the ZuriHac. Registration is on eventbrite.
Haskell Ecosystem Workshop
The Haskell Ecosystem Workshop is for those of you who want to gain a deeper understanding of the Haskell tooling ecosystem, whether to better leverage those tools or to become contributors. Contact Jose Calderon, executive director of the Haskell Foundation, if you have any questions.
Haskell Implementors’ Workshop
The Haskell Implementors’ Workshop (HIW) is a community event for people involved in the design and development of Haskell implementations, tools, libraries, and supporting infrastructure to share their work and to discuss future directions and collaborations with others. Until 2024, the HIW used to be co-located with ICFP (International Conference on Functional Programming). In 2025, it will be co-located with ZuriHac to be accessible to a broader audience. Contact Andreas Herrmann, the HIW program chair, if you have any questions.
Supported by
Community Partners
About
Contact
If you have any questions before the event, please reach out to to the organizers. You can also interact with us on our social media accounts: Mastodon, Bluesky, Twitter.
Legal
Each participant will retain ownership of any and all intellectual and industrial property rights to their work created or used during the Hackathon.
ZuriHac uses the Berlin Code of Conduct.