On Sat, Oct 7, 2023 at 6:33 PM FUJITA Tomonori
[off-list ref] wrote:

To create an internal type based on `name`, we need to unstringify
`name`? I can't find a easy way to do it.

I think you should just be able to do it with `paste!`

    macro_rules! module_phy_driver {
        (name: $name:expr) => {
            paste::paste! {
                #[allow(non_camel_case_types)]
                struct [<$name _ty>];
            }
        }
    }

    // creates struct `demo_driver_ty`
    module_phy_driver! {
        name: "demo_driver"
    }