Need help with a Natvis definition for a `str` newtype

[chanced]

Hey folks, I'm trying to improve the debug visualization of one my crate's types. It is a newtype around str, very similar to std::path::Path. I'm hoping someone can point me in the right direction.

I can't seem to find the Natvis definition for std::path::Path to compare, so I guess it is being generated.

I'm assuming I am either messing up on the resolution (do I need to somehow indicate it being a ref?), the value needs to be cast (ive tried {inner,s}), or both and maybe more.

The code below can be found in the repro repo: GitHub - chanced/natvis-spike

#![debugger_visualizer(natvis_file = "Spike.natvis")]

#[cfg_attr(not(doc), repr(transparent))]
#[derive(Debug)]
pub struct Spike {
    inner: str,
}
impl Spike {
    fn new(s: &str) -> &Self {
        unsafe { &*(core::ptr::from_ref::<str>(s) as *const Self) }
    }
}

fn main() {
    let spike = Spike::new("example");
    let path = std::path::Path::new("example");
    println!("{path:?}\n{spike:?}");
}

<!-- Spike.natvis -->
<?xml version="1.0" encoding="utf-8"?>
<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
    <Type Name="spike::Spike">
      <DisplayString>{inner}</DisplayString>
    </Type>
</AutoVisualizer>

Which displays as:

Thanks for reading - I greatly appreciate it. I know your time is valuable.