Not sure I'd agree. In my limited experience its a hassle with tons of different error types that need converting. You end up converting LibAError to LibBError,

Not sure I'd agree. In my limited experience its a hassle with tons of different error types that need converting. You end up converting LibAError to LibBError, etc. Thats tedious so many people use `thiserror` or `anyhow`, where `anyhow` just hides the error types behind a `&dyn Anyhow::error` or whatnot. Since stable Rust lacks compile time or runtime introspection its difficult to figure out whats wrapped up in the dyn Trait without knowing ahead of time. Inside a single library its not too bad. You get probably an enum type with some errors. But adding stacktraves or anything is a pain if possible at all.