Crate figa 

Figa is layered configuration library for Rust.

Figa provides a way to load configuration values from multiple sources and update them into a single value. How values are updated is controlled by the type of the value. Figa uses serde for deserialization. Derive Figa trait for structures to make them updateable.

Traits

Figa

Trait for loadable layered configuration values. Uses serde for deserialization. Can be updated with other values of the same type to make a layered configuration.