In this article I’d like to show how to get Nix working on your Steam Deck and explain why you might want to. Firstly, you need to install Nix. I’ve seen a lot of people struggling using the official Nix installer, this guide for example takes a lot of steps for something that really ought to be a single command. Luckily, the wonderful folks at Determinate Systems have made a more versatile Nix installer that works wonderfully on the Steam Deck.
If you’re new to Nix, the idea of using an unofficial installer might feel jarring, but don’t worry, Determinate Systems isn’t a no-name company in the Nix sphere. The creator of Nix, Eelco Dolstra, is even a co-founder and continues to be involved in the company. To install Nix on your Steam Deck, simply call the following command and follow the instructions: