Module environments 

First-class environment definitions and layered resolution. First-class environment definitions and layered resolution.

An Environments value holds compiled-in environment TOML tables and, optionally, an environments.toml file plus a fallback for names known to neither. Resolving a name merges those layers (later wins, shallow — no deep-merging into nested tables/arrays) into one EnvSource, then threads it (plus an app-scoped environment-variable source) through an crate::env_config::EnvConfig struct’s own assembly instructions.

This module owns no per-field knowledge at all. Consumers can create structs that use #[derive(EnvConfig)] to create strongly-typed environment configs populated by Environments.

Structs

EnvTable

A compiled-in environment’s raw configuration, expressed as a TOML table so it can merge with the environments.toml file layer on equal footing. Values accepted by EnvTable::with cover the common Rust literal types (&str/String/bool/integers/floats and Vec<T> of those) via Into<toml::Value>, so a compiled-in environment reads like ordinary Rust, not embedded TOML text.

Environments

Engine-owned environment system: compiled/file tables + resolution + active-env state.