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nixos/README.md
2026-02-02 11:43:58 +01:00

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# atlas - NixOS configuration
Personal NixOS desktop configuration built with **Nix flakes** for x86_64-linux. The setup is modular and targets a Wayland desktop (Niri + Ly) with PipeWire audio, AMD GPU support, and a curated set of apps and developer tooling.
## Highlights
- **Wayland desktop**: Niri compositor, Ly display manager, portals, Polkit agent
- **Audio**: PipeWire (ALSA, PulseAudio, JACK)
- **AMD GPU stack**: Vulkan, VA-API, CoreCtrl
- **Developer tooling**: Docker, Rust, Node.js, Python
- **Extras**: Steam/Gaming, virtualization, theming, Navidrome
## Prerequisites
- A **recent NixOS installer ISO** with flake support
- **x86_64-linux** hardware (this flake is pinned to that system)
- Basic familiarity with the NixOS installation process
> This is a personal configuration. Expect to adjust the hostname, user, and hardware modules for your machine.
## Installation (fresh NixOS install)
1. **Download and boot the NixOS graphical installer**
- <https://nixos.org/download.html>
2. **Follow the graphical installer**
- Partition your drives as needed
- Create your user account
- When prompted for desktop environment, select **No desktop**
- Complete the installation
3. **Reboot and log in** to your new shell-only NixOS system
4. **Clone this repository**
```sh
git clone https://github.com/ragusa-it/nixos ~/nixos
```
5. **Copy your hardware configuration into the repo**
```sh
cp /etc/nixos/hardware-configuration.nix ~/nixos/hardware-configuration.nix
```
6. **Review and customize**
- `configuration.nix`
- `networking.hostName`
- `users.users.pinj` (change username/groups as needed)
- `modules/gpu-amd.nix` if you are **not** on AMD hardware
7. **Rebuild with the flake**
```sh
sudo nixos-rebuild switch --flake ~/nixos#nixos
```
8. **Reboot** to start the full desktop environment
```sh
sudo reboot
```
## Post-install rebuilds
From inside the cloned repository:
```sh
sudo nixos-rebuild switch --flake .#nixos
```
Use `boot` if you want to schedule the change for the next reboot:
```sh
sudo nixos-rebuild boot --flake .#nixos
```
## Updating the system
```sh
nix flake update
sudo nixos-rebuild switch --flake .#nixos
```
## Repository layout
- `flake.nix` - Flake inputs, binary caches, and system definition
- `configuration.nix` - Main NixOS entry point (imports modules)
- `hardware-configuration.nix` - Machine-specific hardware config (replace on install)
- `modules/` - Modular system features
- `desktop.nix` - portals, Polkit agent, swaylock, swayidle
- `gpu-amd.nix` - AMD GPU stack
- `audio.nix` - PipeWire and Bluetooth
- `apps.nix` - user applications
- `dev.nix` - developer tooling
- `gaming.nix` - Steam, Lutris, Gamemode
- `theming.nix` - fonts, themes, cursors
- `virtualization.nix` - QEMU/KVM/virt-manager
- `power.nix` - power management
- `shell.nix` - Fish shell configuration
- `services.nix` - system services (fstrim, zram, avahi)
- `navidrome.nix` - self-hosted music server
## Troubleshooting
- **Flakes not enabled**: if `nixos-rebuild` fails, prefix the command with `NIX_CONFIG="experimental-features = nix-command flakes"` or enable flakes in `/etc/nix/nix.conf`.
- **Wrong hardware configuration**: regenerate with `sudo nixos-generate-config` and copy the new `hardware-configuration.nix` into the repo.
## License
No license is specified. If you plan to reuse this configuration, please open an issue to discuss licensing.