CLI Configuration Management

About

This skill provides a comprehensive framework for managing configuration in CLI tools, primarily focused on Rust development. It guides the implementation of hierarchical configuration precedence—ranging from hard-coded defaults to command-line overrides—while ensuring cross-platform compatibility through XDG Base Directory standards. Developers can leverage standardized patterns for TOML, YAML, and JSON formats, secure sensitive data handling, and automated config migrations to build professional-grade, user-friendly command-line interfaces.

Key Features

• 2 GitHub stars
• Cross-platform XDG directory support for Linux, macOS, and Windows
• Multi-layered configuration precedence (CLI, Env, File, Defaults)
• Support for TOML, YAML, and JSON configuration formats
• Automated configuration validation and version migration systems
• Secure environment variable patterns for sensitive data handling

Use Cases

• Migrating legacy CLI configurations to modern XDG standards for better platform integration
• Building professional Rust CLI tools that require persistent user settings
• Implementing secure secret management for developer utilities using environment variables