NixCon 2025

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Friday, Sept. 5, 2025

Saturday, Sept. 6, 2025

Sunday, Sept. 7, 2025

09:00

09:00

60min

Door opening and registration

Aula (4.101)

09:00

60min

Door opening and registration

Lecture Hall (5.002)

09:00

60min

Door opening and registration

Workshop room 1 (4.0114)

09:00

60min

Door opening and registration

Workshop room 2 (4.0115)

10:00

Opening Ceremony

10:45

Sustainable Nix 2025 - State of the Union

What if GitHub Actions were local-first and built using Nix?

Lecture Hall (5.002)

11:40

NixOS Mediation - a free mediation service

Jonas Chevalier (zimbatm)

Rewriting the Hydra Queue Runner in Rust

Lecture Hall (5.002)

12:00

12:00

90min

Lunch

Workshop room 1 (4.0114)

12:00

90min

Lunch

Workshop room 2 (4.0115)

12:05

12:05

85min

Lunch

Aula (4.101)

12:05

85min

Lunch

Lecture Hall (5.002)

13:30

A Journey into Nix with Flox (& how to convince your boss, security department, peers, neighbours)

Workshop room 1 (4.0114)

Introducing NixOps4

You can't spell "devshell" without "hell"

Lecture Hall (5.002)

14:05

Free Software (Talk and Discussion)

14:25

The Road  Towards a  NixOS UI

Qubasa, Kenji Berthold

Lecture Hall (5.002)

15:00

Flatpaks the Nix way

Gabriele Modena

Getting Started with Nix: Common Mistakes and How to Dodge Them

Workshop room 1 (4.0114)

15:35

Is NixOS ready for the CRA?

Lukas Beierlieb

Lecture Hall (5.002)

The Nix Binary Cache and AWS

16:10

Nix-based development environments at Shopify (reprise)

Lecture Hall (5.002)

Supply Chain Security Panel Discussion

Martin Schwaighofer, Shahar "Dawn" Or, Julien Malka / Luj, Arian van Putten

16:40

My first Nix Aha!: A Newcomer’s Perspective

Lecture Hall (5.002)

17:05

Sponsored Lightning Talk - Flox

17:10

Life without Kubernetes: Hosting Mirrors with NixOS

Lecture Hall (5.002)

Sponsored Lightning Talk - Determinate Systems

17:15

How I wish Bazel had nix develop

17:20

Consulting Driven Open Source

Jonas Chevalier (zimbatm)

17:25

17:30

Sponsored Lightning Talk - Cachix

17:35

jail.nix - A library to easily jail your NixOS derivations in Bubblewrap

17:40

What *can't* be configured with Nix?

Lecture Hall (5.002)

systemd-sysupdate + systemd-repart + Nixos = ❤️ OTA Updates

17:45

Building a Nix Binary Cache for Fun and Profit*

@techknowlogick

18:00

18:00

90min

Dinner

Aula (4.101)

18:00

90min

Dinner

Workshop room 1 (4.0114)

18:00

90min

Dinner

Workshop room 2 (4.0115)

18:05

18:05

90min

Dinner

Lecture Hall (5.002)

19:30

How To Fix Infinite Recursion

lennart, berber

10:45

Saturday Opening Ceremony

11:00

NixOS on LoongArch64

Aleksana, Weijia Wang

Lecture Hall (5.002)

The bikes have been shed: The official Nix formatter

Silvan Mosberger

11:35

DerivationBuilder, extracting Nix's sandboxing logic for library use

Python packaging with nixpkgs, pyproject.nix & uv2nix

Lecture Hall (5.002)

12:00

12:00

90min

Lunch

Aula (4.101)

12:00

90min

Lunch

Lecture Hall (5.002)

12:00

90min

Lunch

Workshop room 1 (4.0114)

12:00

90min

Lunch

Workshop room 2 (4.0115)

13:30

Dendritic pattern

Shahar "Dawn" Or

Workshop room 2 (4.0115)

Internet scale routing with NixOS

Lecture Hall (5.002)

Mastering NixOS Integration Tests: Advanced Techniques for Fast and Robust Multi-VM Tests

Workshop room 1 (4.0114)

Steering Committee & Foundation Board Panel

Nix Steering Committee, NixOS Foundation board

14:05

`nixos-compose`: Local development VMs made easy

Lecture Hall (5.002)

14:25

garn: A Faster, Friendlier Nix in TypeScript

Julian Kirsten Arni

14:40

Nix as a solution to embedded linux

Lecture Hall (5.002)

15:00

How NixOS is built: From Pull Request to your `/nix/store`

Dionysis Grigoropoulos

15:10

A field guide to Nix at the Corporate

Aleksander Gondek

Lecture Hall (5.002)

15:35

finix - an experimental os, featuring finit as pid 1, to explore the NixOS design space

15:45

Embarrassingly parallel evaluations

Guillaume Maudoux (@layus)

Lecture Hall (5.002)

16:00

Continuously Integrating Your Nix Config

João Thallis, Claudio Neto

Workshop room 1 (4.0114)

16:05

When Not to Nix: Working with External Config and SOPS Nix

16:15

From Pixels to Pure Derivations: Deterministic Logos with Nix

Lecture Hall (5.002)

16:35

NovaCustom: coreboot laptops and mini PCs, focused on privacy and customisation

Wessel klein Snakenborg - NovaCustom

16:40

How Jane Street does distributed Nix builds

16:45

Share your daemons with your peers

16:50

Kubernetes on Nix

Lecture Hall (5.002)

16:55

Nix Ninja – Incremental builds using dynamic derivations

17:00

Recreational Receipt Printing

Lillith "Infinidoge"

17:05

ExpressVPN & Nix: Securing Privacy at Scale

Samuel Tam (@usertam)

17:10

agenix-shell: secrets in your flake's shells, the Nix Way

17:15

Maintaining NixOS Stability for Years: CRA Compliance without Re-Certification

17:20

Nix in the Wild

17:25

Applying Graph2Diff neural repair to build errors in nixpkgs

Lecture Hall (5.002)

17:30

Styx: Faster substitution, less disk space

17:35

17:35

10min

Lightning talk buffer

Aula (4.101)

17:45

Closing Ceremony

18:00

18:00

90min

Dinner

Aula (4.101)

18:00

90min

Dinner

Lecture Hall (5.002)

18:00

90min

Dinner

Workshop room 1 (4.0114)

18:00

90min

Dinner

Workshop room 2 (4.0115)

10:00

Workshop room 1 (4.0114)

Workshop room 2 (4.0115)

12:00

12:00

90min

Lunch

Workshop room 1 (4.0114)

12:00

90min

Lunch

Workshop room 2 (4.0115)

13:30

Workshop room 1 (4.0114)

Workshop room 2 (4.0115)

15:30

Workshop room 1 (4.0114)

Workshop room 2 (4.0115)

17:30

17:30

5min

So long and

Workshop room 1 (4.0114)

17:30

5min

thanks for all the bees

Workshop room 2 (4.0115)