extern-trait 0.4.2

Opaque types for traits using static dispatch
Documentation 
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use ::extern_trait as my_extern_trait;
use my_extern_trait::extern_trait;

#[extern_trait(crate = my_extern_trait, RenamedProxy)]
trait Renamed {
    fn value(&self) -> i32;
}

struct RenamedImpl(i32);

#[extern_trait(crate = my_extern_trait)]
impl Renamed for RenamedImpl {
    fn value(&self) -> i32 {
        self.0
    }
}

#[test]
fn renamed_crate_path_works_for_decl_and_impl() {
    let proxy = RenamedProxy::from_impl(RenamedImpl(42));
    assert_eq!(proxy.value(), 42);
}