unresolved import - rust-analyzer (unresolved-import) for Derivative

[doivosevic]

Apologies is this is a duplicate but I didn't find any.
I cannot get rust-analyzer to resolve the Derivative import

I'm on ubuntu latest stable and Windows 10 latest. Latest rust-analyzer stable available in latest stable vscode.

Example code:

extern crate derivative;

use derivative::Derivative;

#[derive(Derivative)]
#[derivative(Debug)]
struct Manual {
    config: String,
}

pub fn main() {
}

Zip of the project:
alerting.zip

The code compiles via cargo but the error is in vscode.
Please tell me if you need more info. This seems very reproducible.

[jonas-schievink]

duplicate of #7459