adam0's NixOS configuration

Modular multi-host NixOS and Home Manager flake for desktop, laptop, and virtual machine systems.

Overview - Hosts - Usage - Secrets - Customization - Tooling

This repository contains a personal NixOS setup built around flake-parts, Home Manager, and a heavily modular directory layout. It shares a common base across multiple machines, then layers host-specific hardware, service, and desktop overrides on top.

Overview

• Shared NixOS modules under modules/system, Home Manager modules under modules/home, and per-host overrides under modules/hosts.
• Three flake outputs: desktop, laptop, and vm, all created from the same module stack in flake/nixos.nix.
• Declarative storage with Disko, encrypted secrets with Sops-nix, Secure Boot with Lanzaboote, and theming through Stylix.
• Desktop built on Hyprland, UWSM, greetd + tuigreet, and Noctalia Shell.

Hosts

Host	Purpose	Notable differences
desktop	Main workstation	ROCm enabled, dual-monitor Hyprland layout, Wooting and Roccat support, AMD + Intel GPU monitoring
laptop	Mobile system	Wi-Fi, Bluetooth, TLP, SCX, lid switch handling, battery-oriented tuning, touch support
vm	QEMU/KVM guest	/dev/vda Disko target, SSH enabled, guest agents, simplified display setup

Usage

From the repository root:

# Inspect flake outputs
nix flake show

# Apply a host configuration
sudo nixos-rebuild switch --flake .#desktop

# Format the repository
nix fmt

# Enter the dev shell
nix develop

Important

The host modules point at real installation devices such as /dev/nvme0n1 and /dev/vda, and the configuration expects an Age key at /var/lib/sops-nix/key.txt. Review modules/hosts/*/default.nix, modules/system/disk.nix, and modules/system/sops.nix before using this on a new machine.

Secrets

• Secrets live in secrets/secrets.yaml and are managed with Sops-nix.
• Recipient rules are defined in .sops.yaml for one user key and three host Age keys.

Edit flow:

sops secrets/secrets.yaml

Customization

• Edit shared identity, locale, and Git metadata in vars.nix.
• Adjust host-specific hardware and service choices in modules/hosts/<host>/.
• Add or override shared behavior in modules/system/ and modules/home/.
• Extend package selection through pkgs/ and overlays/.

Tooling

• Formatting and linting are wired through treefmt in flake/treefmt.nix.
• The repository uses import-tree extensively to auto-discover modules, overlays, and local packages.