clippy result_large_err

[extrawurst]

When composing my error type of sub error types it quickly happens that it will trigger this clippy lint: result_large_err.

This often makes me either ignore/allow that lint or type that error as String and write a manual From impl to convert. I was wondering if there is a way to have this crate create this error conversion for me, such as that I create a specific enum value for this error in my Error type and give it a macro marking it as a simple to_string() conversion from a given Error SubType?

[dtolnay]

You can write your own From impl to apply whatever conversion you want.

impl From<OtherError> for MyError {
    fn from(e: OtherError) -> Self {
        MyError::Other(e.to_string())
        //or MyError::Other(Box::new(e))
    }
}

[JMLX42]

You can write your own From impl to apply whatever conversion you want.

I think writing one's own From impl kinda makes #[from] useless.

IMHO the whole point of thiserror is to make a hassle free wrapper for multiple error types. And the result_large_err warning makes it impossible without Box.