Initial NixOS flake-based multi-host setup

Add a NixOS system configuration using flakes, supporting multiple hosts (desktop, laptop, my-machine) with shared and per-host settings. Includes Home Manager integration, user-level and system-level package management, and example hardware configuration placeholders. Provides a README with setup instructions and a .gitignore for common Nix and editor artifacts.

home/home.nix

@@ -0,0 +1,127 @@
+{ config, pkgs, ... }:
+
+{
+  # Home Manager configuration for user-level dotfiles and applications
+  
+  home.username = "yourusername"; # Change this
+  home.homeDirectory = "/home/yourusername"; # Change this
+
+  # Packages to install for this user
+  home.packages = with pkgs; [
+    # Development tools
+    vscode
+    # neovim
+    
+    # Browsers
+    firefox
+    # chromium
+    
+    # Terminal emulators
+    # alacritty
+    # kitty
+    # wezterm
+    
+    # File managers
+    # thunar
+    # ranger
+    # nnn
+    
+    # Media
+    # mpv
+    # vlc
+    # spotify
+    
+    # Communication
+    # discord
+    # slack
+    
+    # Screenshots and screen recording
+    # flameshot
+    # maim
+    # obs-studio
+    
+    # System utilities
+    # rofi
+    # dunst
+    # polybar
+    # picom
+    
+    # Ricing essentials
+    # lxappearance
+    # nitrogen  # wallpaper setter
+    # pywal     # color scheme generator
+    
+    # Themes and icons
+    # papirus-icon-theme
+    # arc-theme
+  ];
+
+  # Git configuration
+  programs.git = {
+    enable = true;
+    userName = "Your Name";
+    userEmail = "your.email@example.com";
+  };
+
+  # Terminal configuration
+  programs.zsh = {
+    enable = true;
+    enableCompletion = true;
+    # autosuggestion.enable = true;
+    # syntaxHighlighting.enable = true;
+    
+    shellAliases = {
+      ll = "ls -la";
+      update = "sudo nixos-rebuild switch --flake .#my-machine";
+      # Add more aliases
+    };
+    
+    # oh-my-zsh = {
+    #   enable = true;
+    #   theme = "robbyrussell";
+    #   plugins = [ "git" "sudo" ];
+    # };
+  };
+
+  # Bash configuration (if you prefer bash)
+  programs.bash = {
+    enable = true;
+    shellAliases = {
+      ll = "ls -la";
+      update = "sudo nixos-rebuild switch --flake .#my-machine";
+    };
+  };
+
+  # Starship prompt
+  # programs.starship = {
+  #   enable = true;
+  #   settings = {
+  #     add_newline = false;
+  #   };
+  # };
+
+  # GTK theming
+  gtk = {
+    enable = true;
+    # theme = {
+    #   name = "Arc-Dark";
+    #   package = pkgs.arc-theme;
+    # };
+    # iconTheme = {
+    #   name = "Papirus-Dark";
+    #   package = pkgs.papirus-icon-theme;
+    # };
+  };
+
+  # Qt theming
+  # qt = {
+  #   enable = true;
+  #   platformTheme.name = "gtk";
+  # };
+
+  # Let Home Manager manage itself
+  programs.home-manager.enable = true;
+
+  # Home Manager state version
+  home.stateVersion = "25.05";
+}