nix-config

This repo stores nix configuration to manage my hosts running NixOS and macOS.

The configuration is very specific to my own machines and setup, but it may be a useful reference for anyone else learning or experimenting with nix, whether it be on a personal workstation or a server environment.

❯ nerdfetch
      ___     dave@hephaestus
     (.. \    󱄅  NixOS 25.11 (Xantusia)  󱄅 
     (<> |      6.12.61
    //  \ \   󰍛  10700/32020 MiB (33%)
   ( |  | /|  󰏔  2346 (nix-env)
  _/\ __)/_)  󰅶  22 mins
  \/-____\/     ██████████████████

Prerequisites

• NixOS (Linux)
• Determinate Nix (macOS)
• just

Build

To run a build/rebuild:

just rebuild

Update

To update nixpkgs defined in flake.nix, run:

just update

If there are updates, they should be reflected in flake.lock.

Rollback

To rollback to the previous generation:

just rollback

Garbage collection

To cleanup previous files, run nix garbage collection:

just clean