NixOS Configuration

Multi-host NixOS flake configuration with Hyprland, Nvidia, and sing-box proxy.

Hosts

• sakost-pc: Main PC with 2x NVMe, LUKS encryption, TPM auto-unlock, Secure Boot
• sakost-pc-portable: Portable/temp disk setup

Structure

├── flake.nix                 # Flake entry point
├── hosts/                    # Per-host configurations
│   ├── sakost-pc/            # Main PC (LUKS + TPM + Secure Boot)
│   └── sakost-pc-portable/   # Portable host
├── modules/                  # Shared NixOS modules
│   ├── hardware/             # GPU, CPU, audio, bluetooth, TPM
│   ├── desktop/              # Hyprland, greetd, XDG portals
│   ├── programs/             # zsh, fonts, git, nix-ld
│   └── services/             # SSH, networking, proxy
├── lib/                      # Shared Nix libraries
│   └── theme.nix             # Centralized theme (colors, fonts, opacity)
├── home/                     # Home-manager configuration
│   ├── sakost.nix            # User entry point
│   ├── xdg.nix              # XDG dirs, env vars, cache paths
│   ├── programs/             # User programs (nixvim, zsh, waybar, etc.)
│   └── desktop/              # Hyprland user config
└── secrets/                  # SOPS-encrypted secrets

Quick Start

1. Clone and Setup

cd ~
git clone <repo-url> nixos-config
cd nixos-config

2. Setup SOPS Secrets

sakost-pc uses the SSH host key for age decryption (available before /home mounts):

# The age key is derived from /etc/ssh/ssh_host_ed25519_key
# Add the host's age public key to .sops.yaml

sakost-pc-portable uses a user age key:

mkdir -p ~/.config/sops/age
age-keygen -o ~/.config/sops/age/keys.txt

# Add your public key to .sops.yaml

Then create and encrypt the sing-box config:

nvim secrets/sing-box.json   # Create with your credentials
sops -e -i secrets/sing-box.json

3. Build and Switch

sudo nixos-rebuild switch --flake .#sakost-pc

Features

Hardware

• Nvidia GPU with proprietary drivers
• Intel/AMD CPU microcode updates
• PipeWire audio (low-latency)
• Bluetooth support
• TPM 2.0 with systemd-initrd auto-unlock (sakost-pc)

Desktop

• Hyprland Wayland compositor with HDR (4K@144Hz)
• Waybar status bar with calendar tooltip
• greetd display manager with ReGreet (GTK4 graphical greeter)
• hyprlock lock screen
• XDG desktop portals
• swww wallpaper daemon
• Walker clipboard provider (built-in, no separate cliphist needed)
• Telegram Desktop (autostart minimized to tray)

Programs

• Editors: Nixvim with full IDE setup (LSPs, completion, telescope, git integration)
• Shells: Zsh with starship prompt, atuin history, autosuggestions, syntax highlighting
• Terminal: Alacritty (50k scrollback)
• Launcher: Walker (Wayland-native, built-in clipboard/files/windows/calculator)
• File manager: Nautilus (GUI), yazi (terminal)
• Browsers: Google Chrome
• Dev tools: rustup (stable), Go, Node.js, npm, Yarn, uv, ripgrep, direnv + nix-direnv
• CLI tools: Claude Code, eza, bat, fd, fzf, zoxide, atuin, tldr, fastfetch
• GUI apps: Telegram Desktop, Google Chrome
• Compatibility: nix-ld for running unpatched binaries

Theme

TokyoNight dark theme defined in lib/theme.nix and shared across all components (alacritty, waybar, mako, eww, wlogout, hyprlock, walker, starship, fzf, zathura, yazi, hyprland, greetd). All colors, fonts, opacity, and border values are centralized — edit one file to retheme everything.

Services

• OpenSSH (key-only auth)
• sing-box proxy with VLESS Reality (TUN mode)
• NetworkManager

XDG & Cache

• Full XDG Base Directory compliance
• Package manager caches centralized to ~/dev/cache/<name> (npm, yarn, uv, pip, cargo, go, cuda)

Secrets Management

Uses SOPS with age encryption. Keys are derived from SSH host keys (sakost-pc) or user age keys (portable).

Files:

• .sops.yaml - SOPS configuration with public keys
• secrets/sing-box.json - Encrypted sing-box config

Editing Secrets

sops secrets/sing-box.json        # Auto-decrypt/encrypt
sops -d secrets/sing-box.json     # Decrypt to view

Adding a New Host

1. Create hosts/<hostname>/ with default.nix, hardware.nix, disk-config.nix
2. Add to flake.nix:

   nixosConfigurations.<hostname> = mkHost "<hostname>";

3. Update .sops.yaml with the host's age public key

Useful Commands

# Rebuild aliases (defined in home/programs/zsh.nix)
nrs   # nixos-rebuild switch --flake ~/nixos-config
nrb   # nixos-rebuild build --flake ~/nixos-config
nrt   # nixos-rebuild test --flake ~/nixos-config

# Edit config
ne    # nvim ~/nixos-config

# Flake operations
nix flake check
nix flake update

# Garbage collection
sudo nix-collect-garbage -d

Nixvim Keybindings

Key	Action
<Space>	Leader key
<leader>e	Toggle file explorer
<leader>ff	Find files
<leader>fg	Live grep
<leader>fb	Find buffers
<leader>gg	Open LazyGit
gd	Go to definition
gr	Find references
K	Hover documentation
<leader>rn	Rename symbol
<leader>ca	Code action

License

Personal configuration - use at your own risk.