embassy task: cannot cfg away task arguments

[MabezDev]

#[embassy_executor::task]
pub async fn test(
    a: u32,
    b: u32,
    #[cfg(feature = "c")] c: u32,
) {

}

Fails with cannot find value c in this scope when the feature c is not enabled. It seems argument cfg's are not applied during the transformation.

[MabezDev]

I attempted to fix this, but it seems when the task macro runs, all the args have no attributes, i.e id.attrs.len() is always zero. Not sure where this info is being lost (or maybe I'm looking in the wrong place, proc macros are not my area of expertise).