Zürich Friends of Haskell

The Zürich Friends of Haskell is a club founded to foster the worldwide knowledge of functional programming, and Haskell in particular. We organise meetups and events in the Zürich area.

About us

The HaskellerZ meetup group has been around since 2011. After organising many meetups and events, in particular ZuriHac, which attracts people from all over the world, there was a need to formalise our group a bit more.

In the short term, this allows us to work together better with sponsors for ZuriHac. In the long term, however, we would like to guarantee the long-time success of a Zurich-based Haskell interest group, not dependent on one or two key volunteers.

The rules are set up so that we encourage non-monetary contributions (e.g. giving a talk). Of course, membership is optional and not required to attend any of our events.

Become a member!

For members, we ask a yearly contribution of either:

  1. giving at least one talk at the Zurich HaskellerZ meetup,
  2. helping organize ZuriHac in an official role,
  3. serving on the board of directors for the Zurich Friends of Haskell, or
  4. providing other voluntary work asked for by the board of directors.

Sign up for Membership

Occasionally, we reach out to our members with volunteering opportunities. Also, once a year we would send you an email to confirm and update the membership.

Last meetup

Simon Michael - Inside hledger: an architectural tour and how-to

Thursday 29 April, 19:00

hledger is a suite of CLI, TUI and WUI tools, file formats, and
documentation for doing accounting with plain text. It is something
that's not yet common: an end-user application written in Haskell,
that aims to be easy to install, robust and pleasing to use, on all
major platforms, including by non-techies.

I have been building and growing hledger and the hledger project for
about 15 years. In this talk I will, after a quick intro to plain text
accounting and hledger, give a tour of hledger's architecture,
codebase, significant evolutions, and some design principles. Then
I'll give some practical tips on how to: add your own custom hledger
commands; use hledger from your own app; troubleshoot hledger
behaviour; investigate bugs; and create effective pull requests. This
will hopefully go smoothly, and in the Q&A we can go deeper on whatever you like.

Simon: http://joyful.com
hledger: https://hledger.org
Plain Text Accounting: https://plaintextaccounting.org


This will be an online event. We will be using Zoom for video conference and Slack for chat. The video will be recorded and uploaded to YouTube after the event.

Please join the ZuriHac Slack workspace using the following link and then join the #meetup channel. https://join.slack.com/t/zurihac/shared_invite/zt-ozxz8hef-vD7yCnFOuyUFoi~j4K2F8g

Please join the video conference using the following link.
Meeting ID:[masked]

Past meetups


Our main yearly event is the organisation of ZuriHac, a yearly Haskell Hackathon that attracts over 300 attendees. It is probably one of the oldest and definitely the largest Haskell Hackathon currently in existence.

The first ZuriHac was organised in 2010 at the Zürich Google office by Johan Tibell and Christophe Poucet. Currently, we are organising it at the Hochschule für Technik Rapperswil with the help of many Zürich Friends of Haskell members and volunteers.


We try to record all of our meetups and keynotes so Friends of Haskell who are not in the Zürich area can enjoy the content as well.

This playlist contains all our Haskell-related videos.

We have also collected the slides of the presentations in this repository. Unfortunately, the collection is currently incomplete.


Current board members of the Zürich Friends of Haskell association:

Past members: