settings_loader 1.0.0

Opinionated configuration settings load mechanism for Rust applications
Documentation 
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use thiserror::Error;

/// Error variants related to configuration.
#[derive(Debug, Error)]
#[non_exhaustive]
pub enum SettingsError {
    /// Error working with environment variable
    #[error("{0}")]
    Environment(#[from] std::env::VarError),

    /// Error in configuration common.
    #[error(transparent)]
    Configuration(#[from] config::ConfigError),

    #[error("failed to load option overrides into settings: {0}")]
    CliOption(#[from] anyhow::Error),

    #[error("{0}")]
    IO(#[from] std::io::Error),

    /// Error in bootstrapping execution from configuration.
    #[error("error during system bootstrap: {message}: {setting}")]
    Bootstrap { message: String, setting: String },

    #[error("infallible operation failed: {0}")]
    Infallible(#[from] std::convert::Infallible),

    #[error("environment not recognized for name: {0}")]
    UnrecognizedEnvironment(String),
}