Macro anyhow 

macro_rules! anyhow {
    ($fmt:literal $(,)?) => { ... };
    ($fmt:expr, $($arg:tt)*) => { ... };
}

Construct an Error::Message from a format string. Drop-in for anyhow::anyhow!. Useful inside .map_err(|e| netsky_core::anyhow!("...: {e}")).