Name: NixOS 25.05 ZHF Meetup & Hackathon
Start: 2025-05-24T09:00:00+02:00
End: 2025-05-25T17:00:00+02:00
Location: OST – Ostschweizer Fachhochschule | Campus Rapperswil

It's time for a new NixOS release, **25.05 Warbler**! 🎉

For a month before release, NixOS is in ZERO Hydra Failures stage. During this time, the community tries to fix all of the Hydra build failures in *Nixpkgs*. You can read more about the process [here](https://github.com/NixOS/release-wiki/blob/master/src/Zero-Hydra-Failures.md).

**Who is this event for?**
Anyone who's interested in Nix! Among the attendees you'll find core Nix contributors, full-on Nix beginners, and everything in between. This event is as much about the upcoming release as it is about engaging with the *local Nix and functional programming community*. It's a great opportunity to get your feet wet while helping us stabilise the next release.

[Check out our user group website](https://zurich.nix.ug) for more information about the venue and our agenda!

**Do I need to bring anything?**
A *laptop* would be useful. Food, drinks, coffee, tea, swag, desks, and friendly mentors are all provided. Bring as many *friends* as you can! 🙂 Make sure they **RSVP**, so we know how much food and swag to get.

**Swag? Can I get a free shirt?** 👕✨
Yes, you can!

**Sounds great! Are there other such events?**
We organise ZHF every 6 months and we organise smaller Nix meetups irregularly. Stay on top of these things by joining the Nix Zürich group or by visiting [our website](https://zurich.nix.ug/) from time to time.

**Hackathon**
The main objective of the hackathon is to approach Zero Hydra Failures for the upcoming NixOS release by fixing bugs and build errors in Nixpkgs and NixOS.

A hackathon is also a great opportunity to address issues that are otherwise hard to fix or get going with. Therefore everyone can pitch projects they want to work on at the venue, and ask for assistance or schedule time to discuss their ideas or code.

John R.

Valentin Gagarin

Alex Drake

Nix Zürich

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NixOS 25.05 ZHF Meetup & Hackathon

OST – Ostschweizer Fachhochschule | Campus Rapperswil

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NixOS 25.05 ZHF Meetup & Hackathon

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