public templates do not seem to be usable in the same crate

I would have expected this to work...

pub use derive_deftly;

mod define_wobbling {
    use derive_deftly::define_derive_deftly;

    define_derive_deftly! {
	pub Wobbling =

	impl $ttype {
	    pub fn wobble(&self) -> String {
		"wobble wobble".to_string()
	    }
	}
    }
}

#[cfg(test)]
mod tests {
    use derive_deftly::Deftly;

    #[derive(Deftly)]
    #[derive_deftly(Wobbling)]
    struct Nonesuch {
    }

    #[test]
    fn will_it_wobble() {
	let n = Nonesuch {};
	assert_eq!(&n.wobble(), "wobble wobble");
    }
}

But when I try to build it (with tests), Rust complains:

error: cannot find macro `derive_deftly_template_Wobbling` in this scope
  --> src/lib.rs:20:21
   |
20 |     #[derive_deftly(Wobbling)]
   |                     ^^^^^^^^
   |
   = help: have you added the `#[macro_use]` on the module/import?
help: consider importing this macro through its public re-export
   |
17 +     use crate::derive_deftly_template_Wobbling;

I'm confused, because I had expected that my use of pub above would have put the template macro into module scope, where the tests module should have found it. But it I add the crate::derive_deftly_template_Wobbling line that Rust suggests, I get:

error: cannot determine resolution for the import
  --> src/lib.rs:18:9
   |
18 |     use crate::derive_deftly_template_Wobbling;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: macro-expanded `macro_export` macros from the current crate cannot be referred to by absolute paths
  --> src/lib.rs:18:9
   |
18 |     use crate::derive_deftly_template_Wobbling;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #52234 <https://github.com/rust-lang/rust/issues/52234>

So I'm a bit stumped.

As a workaround I am not explicitly re-exporting the template macro via "pub use".