nixos-wizard is a terminal-based NixOS installer that provides a text-based UI for guided system installation. It follows a modular architecture with an event loop managing UI state, Page and ConfigWidget traits for UI components, and an Installer struct as central data store. The application guides users through configuration steps including disk partitioning, user creation, package selection, and system settings, then generates NixOS configuration files (configuration.nix and disko config) for installation. Key features include interactive disk partitioning powered by Disko, real-time package search with fuzzy matching, and immediate validation of generated configurations.