Demos
A free and growing set of short demos of what Nix and NixOS can actually do.
These are demos, not lessons. Each one shows a capability at working speed: real commands, real machines, real output, with just enough narration to follow what is happening. We deliberately do not explain the mechanics underneath. That is what our video courses are for, where every concept you see here gets taken apart properly and practiced.
What to expect
- A few minutes each, self-contained, watchable in any order
- Live recordings, not slides
- The capability first. How it works comes later, in the courses
- New demos land here over time
Who this is for
Anyone weighing up Nix or NixOS for a team, and anyone who has read the claims and wants to watch them run. Nothing to install, nothing to set up, no commitment: press play.
Lessons
Browse the videos included in this course.
Section 1 — Live demos
3 lessonsShort live recordings of Nix and NixOS capabilities in action, each one self-contained and watchable on its own.
1.1 NixOS integration tests: whole networks of VMs on your laptop
A NixOS integration test starts several virtual machines, puts them on networks, runs a script across all of them, and destroys them again. It happens inside a build sandbox, on the same laptop you write code on, and it happens identically on your…
1.2 Patch any nixpkgs package without forking it
You need one line changed in a program you did not write. The usual answer is to fork the repository, patch it, build it, and keep the fork alive forever. In Nix it takes about a minute in a REPL, and what you end up with is a handful of lines you…
1.3 Deploy NixOS to any cloud server with nixos-anywhere
Your hoster does not offer a NixOS image. Almost none of them do. That turns out not to matter: this demo rents the cheapest virtual machine at Hetzner, boots the Ubuntu image it insists on, and a few minutes later the machine is running a NixOS…
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Taught by Nixcademy
The same material we teach in our professional, instructor-led Nix and NixOS classes — built from real training experience helping engineers and teams adopt Nix in production.
What learners say
“Nix is a very promising technology, but I found it very difficult to get started. The Nixcademy helped me a lot to use Nix effectively in my work. The training has given me the practical skills I need to fully evaluate and use Nix.”
“Nixcademy has been a game-changer for me. Working with my mentor has been incredibly rewarding. The personalized guidance and in-depth education have boosted my skills tremendously. I highly recommend Nixcademy for anyone serious about mastering Nix.”
“Having recently embarked on building our products with Nix & NixOS, the training provided by nixcademy has been a game-changer for our team. The steep learning curve was made manageable through the comprehensive and well-structured program. The trainer's deep expertise and ability to simplify complex concepts made the learning process enjoyable and effective. I wholeheartedly recommend nixcademy trainings to my colleagues.”
