We are pleased to announce the Nix and NixOS devroom will return for another year at FOSDEM 2026, and with that comes the Call for Participation!
The Nix and NixOS devroom aims to provide a welcoming space for the Nix community and its extended projects, to give time and space for both technical and non-technical talks about Nix/NixOS.
We—the Nix and NixOS devroom managers—hope to see you there. 
Key dates
- CFP Submission deadline: 2025-11-30T23:00:00Z
- Announcement of selected talks: 2025-12-14T23:00:00Z
- Conference dates: 2026-01-30T23:00:00Z→2026-01-31T23:00:00Z
- Nix and NixOS devroom date (to be locked in): 2026-01-30T23:00:00Z, second half of the day
Practical information
- The duration of talks should be 20 minutes, plus a few minutes Q&A
- We also accept 5 minute lightning talks
- Accepted speakers will be notified on the email they submitted their proposals with
- The CFP is hosted by FOSDEM
- For questions about the Nix and NixOS devroom, you can reach out to one of the following people: @katexochen @mschwaig @bjth.
Values
The Nix and NixOS devroom will stay true to the Nix’s community values, we expect the devroom managers, attendees, and speakers of the Nix and NixOS devroom to do the same.
In addition to our own values, we’ll also follow the FOSDEM Code of Conduct, accepted speakers will have to explicitly agree to FOSDEM’s Code of Conduct.
Don’t be afraid to reach out if you have questions or about either Nix’s values or the FOSDEM CoC.
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The linked CfP site mentions a submission deadline of November 16. Does the Nix track have a separate deadline from the rest?
That’s the submission deadline for the main track, the fosdem organizers currently try to figure out how to fix/separate that.
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Can the speakers talk from remote (Online)? Or it’s an offline event.
Also what kind of topics are welcome? 
I mean the audience is pro nixers or just newbies focused?
I think this description helps clarify the kinds of talks we are looking for:
Nix and NixOS are tools that take a unique approach to package management and system configuration. It differs with most other tools in that it is heavily inspired by functional programming. Those inspirations being: immutable, side effectless, and correct. It delivers on the promise of “if it works on my machine, it will work on yours”. Without shipping your actual machine. 
The Nix and NixOS devroom will bring interesting presentations, both technical and community-focussed, for new and seasoned nixers alike. We welcome presentations related to other functional package managers or adjacent projects as well.
Both beginner and advanced topics are welcome. This year we also added language explicitly welcome other functional package managers and adjacent projects.
It’s an offline-focused event, so remote presentations are unfortunately not possible. Live streams and recordings will be available.
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haha, @tristan can show off the RISCV port, I can come over do a talk as well.
Wrong Tristan lol, you probably meant to ping me.
Though, I have an idea for a talk but nothing I’m willing to say yet.
yes. should we do a talk on RISCV, push you finish all the porting by FOSDEM. lol
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