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configuration for my mac and linux workstations
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 Update update section
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README.md

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.

❯ macchina

        a8888b.           Host        -  dave@hephaestus
       d888888b.          Machine     -  Micro-Star International Co., Ltd MS-7C02 1.0
       8P"YP"Y88          Kernel      -  6.12.81
       8|o||o|88          Distro      -  NixOS 25.11 (Xantusia)
       8'    .88          DE          -  Niri
       8`._.' Y8.         Packages    -  1 (cargo), 6 (flatpak), 9299 (nix)
      d/      `8b.        Shell       -  fish
     dP        Y8b.       Terminal    -  .ghostty-wrappe
    d8:       ::88b.      Resolution  -  3840x2160
   d8"         'Y88b      Uptime      -  11h 32m
  :8P           :888      CPU         -  AMD Ryzen 7 5700X 8-Core Processor (16)
   8a.         _a88P      CPU Load    -  3%
 ._/"Yaa     .| 88P|      Memory      -  10.2 GB / 32.8 GB
 \    YP"    `|     `.
 /     \.___.d|    .'
 `--..__)     `._.'

Prerequisites

Build

To run a build/rebuild:

just rebuild

Update

Updates are proposed by renovate. To build the system, checkout the renovate PR and run just rebuild.

If the build is stable, run just merge-pr

Rollback

To rollback to the previous generation:

just rollback

Garbage collection

To cleanup previous files, run nix garbage collection:

just clean

Restoring from a live USB

If the bootloader for some reason breaks (i.e. motherboard firmware upgrade), restore it from a live USB by running the following commands:

$ sudo cryptsetup luksOpen /dev/nvme0n1p2 crypted-nixos
Enter passphrase for /dev/nvme0n1p2: ********
$ sudo mount /dev/vg/root /mnt
$ sudo mount /dev/nvme0n1p1 /mnt/boot/efi
$ sudo nixos-enter --root /mnt
$ hostname <hostname>

Navigate to the nix-config directory and run:

just rebuild-boot