149 lines
4.3 KiB
Markdown
149 lines
4.3 KiB
Markdown
# FredOS NixOS Configuration
|
|
|
|
Flake-based NixOS configuration for three machines, built and deployed directly from GitHub. No local config management required after initial setup.
|
|
|
|
## Machines
|
|
|
|
| Hostname | Description |
|
|
|---|---|
|
|
| FredOS-Gaming | AMD desktop, UEFI/systemd-boot |
|
|
| FredOS-Macbook | Intel laptop, UEFI/systemd-boot |
|
|
| FredOS-Mediaserver | Intel server, BIOS/GRUB |
|
|
|
|
## Structure
|
|
|
|
```
|
|
flake.nix # Flake inputs and host definitions
|
|
common.nix # Shared config for all hosts
|
|
hosts/
|
|
FredOS-Gaming.nix # Gaming-specific config
|
|
FredOS-Macbook.nix # Macbook-specific config
|
|
FredOS-Mediaserver.nix # Mediaserver-specific config
|
|
hardware/
|
|
FredOS-Gaming.nix # Hardware config + bootloader
|
|
FredOS-Macbook.nix
|
|
FredOS-Mediaserver.nix
|
|
apps/ # Per-app config files
|
|
settings/ # Shared system settings (GNOME, locale, audio, etc.)
|
|
services/ # Service definitions
|
|
home-manager/ # Home Manager config
|
|
walls/ # Wallpapers
|
|
```
|
|
|
|
## Day-to-day usage
|
|
|
|
Edit files directly on GitHub, then on the machine run:
|
|
|
|
```bash
|
|
update
|
|
```
|
|
|
|
That's it. The alias is defined in `common.nix` and expands to:
|
|
|
|
```bash
|
|
sudo nixos-rebuild switch --flake github:ediblerope/nixos-config --refresh --no-write-lock-file
|
|
```
|
|
|
|
Nix automatically matches the running machine's hostname to the correct `nixosConfigurations` entry.
|
|
|
|
Other useful aliases:
|
|
|
|
```bash
|
|
clean # sudo nix-collect-garbage -d
|
|
```
|
|
|
|
---
|
|
|
|
## Adding a new machine
|
|
|
|
### 1. Fresh NixOS install
|
|
|
|
Boot the NixOS installer and complete the standard installation. Note the `system.stateVersion` it generates — you'll need it later.
|
|
|
|
### 2. Enable flakes temporarily
|
|
|
|
Add this to `/etc/nixos/configuration.nix` and rebuild:
|
|
|
|
```nix
|
|
nix.settings.experimental-features = [ "nix-command" "flakes" ];
|
|
```
|
|
|
|
```bash
|
|
sudo nixos-rebuild switch
|
|
```
|
|
|
|
### 3. Create the hardware config on GitHub
|
|
|
|
Copy the contents of `/etc/nixos/hardware-configuration.nix` and create `hosts/hardware/FredOS-NEWHOST.nix` on GitHub. Append the following to it:
|
|
|
|
```nix
|
|
networking.hostName = "FredOS-NEWHOST";
|
|
|
|
# Match what the installer configured — systemd-boot for UEFI:
|
|
boot.loader.systemd-boot.enable = true;
|
|
boot.loader.efi.canTouchEfiVariables = true;
|
|
boot.loader.systemd-boot.configurationLimit = 5;
|
|
boot.initrd.systemd.enable = true;
|
|
|
|
# For BIOS/GRUB machines instead:
|
|
# boot.loader.grub.enable = true;
|
|
# boot.loader.grub.devices = [ "/dev/sda" ]; # verify with: sudo grub-probe --target=disk /
|
|
|
|
nix.settings.experimental-features = [ "nix-command" "flakes" ];
|
|
system.stateVersion = "25.11"; # use the version the installer generated
|
|
```
|
|
|
|
### 4. Register the host in flake.nix
|
|
|
|
In `flake.nix` on GitHub, add to `nixosConfigurations`:
|
|
|
|
```nix
|
|
FredOS-NEWHOST = mkHost "FredOS-NEWHOST";
|
|
```
|
|
|
|
### 5. Add host-specific config
|
|
|
|
Create `hosts/FredOS-NEWHOST.nix` on GitHub for any machine-specific packages or services:
|
|
|
|
```nix
|
|
{ config, pkgs, lib, ... }:
|
|
{
|
|
config = lib.mkIf (config.networking.hostName == "FredOS-NEWHOST") {
|
|
# host-specific config here
|
|
};
|
|
}
|
|
```
|
|
|
|
Then add it to the imports list in `common.nix`:
|
|
|
|
```nix
|
|
./hosts/FredOS-NEWHOST.nix
|
|
```
|
|
|
|
### 6. Switch to the flake
|
|
|
|
Run this once on the new machine with the explicit hostname:
|
|
|
|
```bash
|
|
sudo nixos-rebuild switch --flake github:ediblerope/nixos-config#FredOS-NEWHOST --refresh --no-write-lock-file
|
|
```
|
|
|
|
After this succeeds, the plain `update` alias works from then on.
|
|
|
|
---
|
|
|
|
## Flake inputs
|
|
|
|
| Input | Source |
|
|
|---|---|
|
|
| nixpkgs | `github:NixOS/nixpkgs/nixos-unstable` |
|
|
| home-manager | `github:nix-community/home-manager` |
|
|
| omnisearch | `git+https://git.bwaaa.monster/omnisearch` |
|
|
| zen-browser | `github:0xc000022070/zen-browser-flake` |
|
|
| nix-flatpak | `github:gmodena/nix-flatpak` |
|
|
|
|
## Notes
|
|
|
|
- `hosts/hardware/` files are committed to the repo — they contain UUIDs and disk layout but no sensitive credentials
|
|
- Host-specific behaviour is gated with `lib.mkIf (config.networking.hostName == "...")` or `lib.elem config.networking.hostName [...]`
|
|
- GitHub API rate limit (60 req/hour unauthenticated) can occasionally be hit if running `update` many times in quick succession during active config changes — wait ~15 minutes and retry
|