nix-config

My NixOS configuration for personal machines. This flake manages system configurations and home environments using Home Manager.

Hosts

Linux Hosts

• maple - Laptop
• tumble - Desktop workstation

All Linux hosts share common configuration and can opt into additional features like DisplayLink support.

Structure

.
├── flake.nix              # Main flake configuration
├── home/                  # Home Manager configs
│   ├── common.nix         # Shared across all platforms
│   ├── linux.nix          # Linux-specific config
│   └── programs/          # Individual program configs
└── hosts/
    └── linux/
        ├── maple/         # Maple-specific config
        ├── tumble/        # Tumble-specific config
        └── programs/
            └── displaylink/  # DisplayLink dock support

Getting Started

Initial Setup

1. Clone this repo:

   git clone <your-repo-url> ~/Code/nix-config

2. Symlink to /etc/nixos:

   # Backup existing config
   sudo mv /etc/nixos /etc/nixos.backup
   
   # Create symlink
   sudo ln -s ~/Code/nix-config /etc/nixos

3. Apply the configuration:

   sudo nixos-rebuild switch --flake /etc/nixos#<hostname>

Daily Usage

After the initial setup, just use the rebuild alias:

rebuild

It automatically detects your hostname and rebuilds the system.

Features

System Level

• Latest Linux kernel
• KDE Plasma 6 with Wayland
• Docker
• VM management with libvirtd/KVM
• DisplayLink dock support (opt-in)
• Automatic flakes support

User Level (Home Manager)

• Consistent shell environment (bash with custom aliases)
• Git configuration
• Vim setup
• Development tools (kubectl, helm, talosctl, etc.)
• Plasma desktop customization

Adding a New Host

1. Generate hardware config:

   nixos-generate-config --show-hardware-config > hosts/linux/<hostname>/hardware-configuration.nix

2. Create hosts/linux/<hostname>/configuration.nix (copy from an existing host)

3. Add to flake.nix:

   <hostname> = nixpkgs.lib.nixosSystem {
     system = "x86_64-linux";
     specialArgs = { inherit inputs; };
     modules = [
       ./hosts/linux/<hostname>/configuration.nix
       # ... (copy module config from existing host)
     ];
   };

4. Rebuild!

Notes

• The configuration uses NixOS 25.11 stable
• Home Manager state version: 25.11
• Git tree must be clean or committed for rebuilds to work properly
• DisplayLink prefetch script handles EULA acceptance for CI builds