This library provides a comprehensive solution for configuring applications from various sources, layering configurations, supporting overloads, extensions, and more.

To be one-stop for all configuration needs, regardless of the nature of the application or the complexity of the configuration.

• Using serde compatible types for leaf configurations.
• Supports sourcing configuration from:
  • Environment variables
  • Files (JSON, YAML, TOML)
  • Command line arguments
  • Custom sources via Source trait
• Supports multiple ways of updating configuration value from layered sources:
  • Recursive update (default)
  • Overriding (the only option for serde-deserializable types)
  • Extending (available for container types)
• Derive macros to declaratively define configuration structures.