This repo contains the Nix configuration for the various machines I use. I'm new to Nix/NixOS and its ecosystem so a lot of the code you'll see here might not be its best.
When I first started using NixOS I used the standard configuration at
/etc/nixos/configuration.nix. This worked well for me while I was managing
only one machine. As I installed Nix on more and more machines I wanted a more
elegant way to manage shared configuration. So I arrived at Flakes.
This repo is a mix of Flakes and non-Flakes configuration, but most of the hosts I use daily have been converted to Flakes.
For an intro to flakes I recommend the original Tweag Flakes intro on using Nix Flakes to manage a NixOS system.
For other example configs on Github, have a look at this list I made nix-configs.
In before people get triggered, I use Btrfs on all of my machines (including a raspi's SDCard). It's great 👌
To prevent sadness in case something goes wrong in the future I back up daily to Backblaze. See my custom restic module for that
The ./hosts directory contains the configuration files for my machines.
- 🖥️ vader - Main NixOS install
- 💻 mackey - A macbook running [nix-darwin] & home-manager
hk47 -
A Raspberry Pi 4B in my closet. Mainly runs the Unifi controller- 🖥️ nix-1 - A Hetzner VPS. Runs k3s
Most of the time it boils down to this:
-
make a change in this repo (e.g. add a new package, add a new env var)
-
execute
$ sudo nixos-rebuild switch --flake /path/to/git/repo
alternatively, you can push the change to Github and run
$ sudo nixos-rebuild switch --flake github:alexghr/nix
nixos-rebuild will default to apply the nixosConfiguration named after the
current system's hostname, so the above command is equivalent to
$ sudo nixos-rebuild switch --flake github:alexghr/nix#$(hostname)- remove stale hosts
- migrate other machines to Flakes
- setup CI (update flakes, push derivations to cachix, etc)