Is there a way I can access a macro from a dependency's dependency without explicitly including it?

Question

Reqwest is built on top of Hyper which includes a header! macro to create custom headers. Is there a way I can access the header! macro without explicitly including Hyper as a separate crate?

#[macro_use] extern crate reqwest;

header! { (XRequestGuid, "X-Request-Guid") => [String] }

cannot find macro header! in this scope

Answer 1

No, you must directly import a macro to be able to use it. This is the same behavior as functions, types, and traits.

See also:

• Cannot use macros imported in a library in an executable that uses that library
• Why must I use macros only used by my dependencies
• Cannot use the `doc!` macro from the mongodb crate in the scope of a sub sub module