Friday 14 June to Sunday 16 June, the Zürich Friends of Haskell association will organize ZuriHac 2019, a three day Haskell Hackathon hosted at the HSR Hochschule für Technik Rapperswil. This is the eighth Haskell Hackathon organized in Zürich and and the third one hosted at the HSR. This fantastic venue is located right at lake Zürich and provides space for more than 400 participants.

The Haskell Hackathon is a free, international, grassroots collaborative coding festival whose goal is to expand the community and to build and improve Haskell libraries, tools, and infrastructure. This is a great opportunity to learn more about Haskell, meet fellow Haskellers in real life, find new contributors for your project, improve existing libraries and tools or even start new ones!

Tickets are completely free. This event is open to any experience level, from beginners to gurus. In fact, one of the goals is to bring beginners in contact with experts so that the former can get a quick start in the Haskell community. We will have a dedicated beginners' course, and there will be mentors on site whom you can directly approach during the whole event with any Haskell-related question you have.

Add to your calendar: iCal or Google Calendar.

supported by

Digital Asset DFINITY Fretlink Google IOHK Joy of Haskell HSR myrtle.ai Serokell Tweag I/O Well-Typed

Interested in sponsoring? Contact us!


How it works

ZuriHac focuses on three goals:

ZuriHac is not a conference. Most of the time is reserved to work on projects together. At the start of the Hackathon maintainers get a few moments to present their project. If you want, you can join any of these projects and learn, contribute code, write documentation, or make any other sort of progress. There will be something for all skill levels.

We will highlight a few projects on our website before the event.

Of course — in between hacking — we love learning from some of the most interesting Haskellers out there, so we have a couple of keynotes from several amazing people from both industry and academia. In addition to that, there are some free courses you can take as well.

Please contact us if you have more questions about the schedule.


Simon Peyton Jones
Simon Peyton Jones

Keynote at 10.00 on Saturday.

Simon is one of the designers of the Haskell language, an inspiring leader for the whole Haskell community, and the main developer of GHC, the de facto standard Haskell compiler. He also chairs the Computing At School group, which promotes the teaching of computer science at school.

Ryan Trinkle
Ryan Trinkle

Keynote at 10.00 on Friday.

Ryan is one of the founders of Obsidian Systems, a successful full-stack Haskell consultancy firm based in New York. In additon to that, he is the author of the Reflex FRP framework, a composable, cross-platform functional reactive programming framework for Haskell.

Susan Potter
Susan Potter

Keynote at 17.00 on Saturday.

Haskell/Nix developer, cloud infrastructure engineer and architect, author, and co-founder of Lambda Ladies. Over the last two decades, she has also worked on algorithmic trading systems, market data software, multi-tenant service-oriented architecture, and continuous delivery.

Richard Eisenberg
Richard Eisenberg

Keynote at 10.00 on Sunday.

Richard is an Assistant Professor at Bryn Mawr College. He researches functional programming languages and type systems. In the Haskell community, he is mostly known for his work around Dependent Types. He is also a core contributor to the Glasgow Haskell Compiler.

Andrey Mokhov
Andrey Mokhov

Keynote at 17.00 on Friday.

Andrey is a Senior Lecturer at Newcastle University. He has done a lot of work on the Hadrian build system for GHC, and his work around algrebraic graphs is one of the greatest recent examples of the elegance and simplicity of functional programming.

Edward Kmett
Edward Kmett

Edward Kmett's Glorious Hallway Track.

Prolific Haskell programmer, researcher at MIRI, mathematician, lapsed graphics guru and demo scener, defense contractor, financial toolsmith, author of the widely-known lens library, Twitch streamer.


The schedule is preliminary and will be updated as we get closer to the event.

Friday 14. June Saturday 15. June Sunday 16. June
9:00 9:00 Registration 9:00 Hacking 9:00 Hacking
10:00 10:00 Keynote by
Ryan Trinkle
10:00 Keynote by
Simon Peyton Jones
10:00 Keynote by
Richard Eisenberg
11:00 11:00 Opening ceremony 11:00 Hacking 11:00 Hacking
11:30 11:30 Project Pitches
12:00 12:00 Lunch 12:00 Lunch 12:00 Lunch
13:30 13:30 Hacking & Tracks 13:30 Hacking & Tracks 13:30 Hacking
15:00 15:00 Project Demos
16:00 16:00 Hacking 16:00 Keynote by
Susan Potter
17:00 17:00 Keynote by
Andrey Mokhov
17:00 Hacking 17:00 End of Event
18:00 18:00 Food Truck 18:00 Barbeque

Beginner Info

We want to make the event accessible to Haskellers at all levels. This is why we have dedicated mentors and beginner-level Haskell exercises every year, and 2019 will be the second year to feature an introductory course by Julie Moronuki.


You can identify mentors from the black Zurihac shirt. They welcome any questions you may have, so please grab them if you have any issues or questions.

Beginner course

Important update: unfortunately, Julie, will not be able to make it to ZuriHac this year. Ryan Moore will be teaching the beginners course in her absence.

The free beginners course will be focused on Haskell language fundamentals with no prior experience to the language assumed or required.

Topics that will be covered include:

  1. Binding values and scope
  2. Functions & their first class nature
  3. Closures, partial application, and composition
  4. "Built In" & "Create Your Own" types
  5. Type classes
  6. Working with lists and text
  7. Reading & writing data to files

Advanced course

Due to popular demand we are offering an advanced track for the first time. So if you already feel comfortable with the basics of Haskell, but are eager to learn more, then you will be able to register as soon as we publish the programme. This course will be lead by the Haskell experts from Well-Typed.


The hackathon takes place at the HSR Hochschule für Technik Rapperswil. The campus is about 40 minutes outside of the Zurich city.

HSR campus

HSR Hochschule für Technik Rapperswil
Oberseestrasse 10
8640 Rapperswil-Jona

The Hackathon mainly takes place in two buildings: Building 1 and Building 4. Detailed info on the different rooms will be announced later.

The venue is located right next to the lake, and weather has been superb (25°C, 77℉) during the previous years, so feel free to bring your swimming gear!

Getting there

You can take the S7 or S15 to get from the Zurich main station to Rapperswil. These trains run regularly in 30 minute and 60 minute intervals, respectively. Google maps works well for directions if you use the "public transport" tab.

If you arrive at the Zurich airport, first take the train to the Zurich main station and then continue with S7 or S15. Trains from the airport towards the city run every few minutes.


As for accomodation, there are two options. You can either stay in Zurich, or in Rapperswil itself. Both have advantages and disadvantages: there are more things to do in Zurich, but you can save time and transportation costs by staying in Rapperswil.

Here are some hotels close to the venue:

During previous years, attendees have also shared accomodation (e.g. on Airbnb). In order to get in touch with fellow attendees, we recommend using the #accomodation channel in our Slack chat.

If weather allows for it, camping is also a very affordable and beautiful option for the ultimate grassroots ZuriHac festival fans. Several people have stayed at this campsite in 2017 and 2018.

Train tickets

If you stay in Zurich city, the easiest option is to get a 24 hour pass for all zones. It's good for all public transportation around Zurich, up to Rapperswil. A one-way ticket costs 17.20CHF, the 24 hour pass 34.40CHF.

Please note that the 24 hour pass is literally a 24 hour pass and can be used over multiple days: e.g. if you buy one on the first day of the Hackathon at e.g. 9.00, you can still use it to take the train at 8.00 the next day. This way, it is possible to buy only two tickets for the three-day conference.

A lightly cheaper alternative to the 24 hour pass is the 9 O'Clock day pass which works more like a regular day pass. However, this requires you to take the train to Rapperswil after 09:00 on Friday, as described on the website.

You can buy tickets from the SBB or ZVV vending machines, which have a button to use them in English rather than German on the home screen. Alternatively, you can use the ZVV ticket app on Android or iOS.

Getting around

See this map for more information on accomodation, grocery stores, and other useful places.

We also recommend the Wikivoyage page on Zurich.


The Hackathon is completely free but the number of participants is limited to 450 people. To this end, it is very important to us that you timely cancel your registration in case you cannot attend. Around two months before the Hackathon, we will ask you to confirm your registration and after that you will be able to access your ticket.

To the registration

Once we reach maximum capacity you will be queued into a wait list. In case that somebody cancels we will fill up the seats from the wait list in first come first serve order and let you know. Please do not book anything before we have confirmed a seat for you in a confirmation email.


Update: we have received (and accepted) a good number of scholarship candidates. We are not accepting new applications at this point due to budget constraints.

Switzerland can be expensive for people visiting from abroad. ZuriHac is a free event, but transportation, lodging, and food might discourage somebody without a good income from attending. We want to make it easier for anyone to come, and contribute towards making the Haskell community exciting and diverse.

For that reason, we will provide a small number of scholarships this year. Because we do not charge anything for tickets, our budget is limited and you can consider this year a "trial run" of the program. Anybody accepted will be supported with an amount between 100.- and 500.- Swiss Francs, depending on your expenses.

Our focus is on people with limited financial means and underrepresented groups in tech -- the latter includes, but is not limited to: people of colour, anyone identifying as LGBTQIA+, women, and disabled people.

You can apply by sending an email to [email protected], and include:

We will not disclose the recipients of these scholarships, in order to protect their privacy. The amount you estimate for your expenses will not be a factor when we consider your application. If necessary, we can transfer the money to you before you buy your plane/train ticket, so that you don't have to pay upfront if you are cash-strapped.

Don't be shy and just contact us if you feel that this can make a difference to you. There is no downside to applying, and we will never disclose your identity.


If you have any questions before the event, please reach out to Jasper Van der Jeugt, Juri Chome or Farhad Mehta. We also monitor our official Twitter account.

The primary medium to communicate with other participants is our Slack Organization. We use the hashtag #zurihac on Twiter, and you can discuss the Hackathon on IRC in #zurihac channel on Freenode.

Who are we?

Organizing ZuriHac would not be possible without the help of all volunteers involved.

  • Main Organizers: Jasper Van der Jeugt, Juri Chome, Farhad Mehta
  • Beginner Track: Nicolas Gagliani, Martin Huschenbett
  • GHC DevOps Track: Andreas Herrmann, Niklas Hambüchen
  • T-Shirts: Carl Baatz
  • Sponsoring: Silvio Böhler
  • HSR Location and Facilities: Ingrid Vettiger, Farhad Mehta
  • Food and Beverages: Niklas Hambüchen
  • Additional help: Arvin Moezzi, Gleb Peregud, Ivan Kristo, Simon Meier, Tomas Carnecky

Terms and Conditions

Each participant will retain ownership of any and all intellectual and industrial property rights to his or her work created or used during the Hackathon.