Using derive proc-macros in main crate

[jofas]

Here is an answer to your question that I've written in a different topic, hope that helps you:

How to express crate path in procedural macros?

Ah, I see. Yes, a workaround like use crate as my_crate; would work. Or you could use an attribute, like I suggested. For example: use my_crate_derive::DeriveFoo; #[derive(DeriveFoo)] #[derive_foo(crate = "crate")] struct Foo; I assume this has something to do with extern crate, which you had to call in Rust 2015 explicitly in order to import crates. Since your current crate is not really an external crate, there is no implicit extern crate self as my_crate; in your prelude, I'd say. Theref…