Complete NixOS rewrite: Transform Omarchy from Arch to declarative NixOS

- Replace shell script-based Arch installation with declarative NixOS configuration
- Implement flake-based architecture for reproducible builds
- Add modular system with feature flags (Docker, gaming, development, etc.)
- Create declarative theme system with Tokyo Night and Catppuccin
- Convert utility scripts to Nix packages with proper derivations
- Add comprehensive development environments (Rust, Go, Python, Node.js, C/C++)
- Implement Home Manager integration for user environment management
- Add interactive installer with theme selection and feature configuration
- Update documentation for NixOS-specific workflows and commands
- Provide atomic updates with rollback capability

This maintains all aesthetic and functional benefits of original Omarchy
while gaining NixOS power: reproducibility, version control, and atomic updates.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

configuration.nix

@@ -0,0 +1,159 @@
+# Omarchy NixOS Configuration
+# This is the main NixOS configuration file
+# Edit this file to define what should be installed on your system
+
+{ config, pkgs, lib, ... }:
+
+let
+  # Import custom modules
+  omarchy = import ./modules { inherit config pkgs lib; };
+
+  # Current theme - can be changed easily
+  currentTheme = "tokyo-night";
+in
+{
+  imports = [
+    # Include the results of the hardware scan
+    ./hardware-configuration.nix
+
+    # Omarchy modules
+    ./modules/core.nix
+    ./modules/desktop/hyprland.nix
+    ./modules/packages.nix
+    ./modules/development.nix
+    ./modules/themes/${currentTheme}.nix
+    ./modules/users.nix
+    ./modules/services.nix
+    ./modules/hardware
+  ];
+
+  # Enable flakes
+  nix = {
+    settings = {
+      experimental-features = [ "nix-command" "flakes" ];
+      auto-optimise-store = true;
+
+      # Binary caches
+      substituters = [
+        "https://cache.nixos.org"
+        "https://nix-community.cachix.org"
+        "https://hyprland.cachix.org"
+      ];
+      trusted-public-keys = [
+        "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+        "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
+      ];
+    };
+
+    # Garbage collection
+    gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "--delete-older-than 30d";
+    };
+  };
+
+  # Bootloader
+  boot = {
+    loader = {
+      systemd-boot = {
+        enable = true;
+        configurationLimit = 10;
+      };
+      efi.canTouchEfiVariables = true;
+    };
+
+    # Plymouth for boot splash
+    plymouth = {
+      enable = true;
+      theme = "omarchy";
+      themePackages = [ (pkgs.callPackage ./packages/plymouth-theme.nix {}) ];
+    };
+
+    # Kernel
+    kernelPackages = pkgs.linuxPackages_latest;
+  };
+
+  # Networking
+  networking = {
+    hostName = "omarchy";
+    networkmanager.enable = true;
+
+    # Firewall
+    firewall = {
+      enable = true;
+      allowedTCPPorts = [ 22 80 443 3000 8080 ];
+    };
+  };
+
+  # Timezone and locale
+  time.timeZone = "America/New_York";
+  i18n = {
+    defaultLocale = "en_US.UTF-8";
+    extraLocaleSettings = {
+      LC_ADDRESS = "en_US.UTF-8";
+      LC_IDENTIFICATION = "en_US.UTF-8";
+      LC_MEASUREMENT = "en_US.UTF-8";
+      LC_MONETARY = "en_US.UTF-8";
+      LC_NAME = "en_US.UTF-8";
+      LC_NUMERIC = "en_US.UTF-8";
+      LC_PAPER = "en_US.UTF-8";
+      LC_TELEPHONE = "en_US.UTF-8";
+      LC_TIME = "en_US.UTF-8";
+    };
+  };
+
+  # Sound
+  sound.enable = true;
+  hardware.pulseaudio.enable = false;
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+    jack.enable = true;
+  };
+
+  # Enable the X11 windowing system
+  services.xserver = {
+    enable = true;
+    excludePackages = [ pkgs.xterm ];
+
+    # Display manager
+    displayManager = {
+      gdm = {
+        enable = true;
+        wayland = true;
+      };
+    };
+  };
+
+  # Console configuration
+  console = {
+    font = "ter-132n";
+    packages = with pkgs; [ terminus_font ];
+    keyMap = "us";
+  };
+
+  # Enable CUPS for printing
+  services.printing.enable = true;
+
+  # System version
+  system.stateVersion = "24.05";
+
+  # Custom Omarchy settings
+  omarchy = {
+    enable = true;
+    theme = currentTheme;
+
+    # Feature flags
+    features = {
+      docker = true;
+      development = true;
+      gaming = false;
+      multimedia = true;
+    };
+  };
+}