How to use constant prefix for uri!

[elibroftw]

I was first going to post a bug report that if I use uri! on a function that is mounted on a different prefix, the macro returns the wrong url. Well its a macro so it makes sense. But then I said to prevent using two values, let me define a constant. But if I use the constant &str inside a uri!(constant, ...) it does not compile!

Any alternative?

   Compiling tauri-update-server v0.1.0 (C:\Users\maste\Documents\GitHub\website\blueprints\tauri_releases\rocket-rs-sample)
error[E0277]: the trait bound `&str: ValidRoutePrefix` is not satisfied
   --> src\main.rs:139:23
    |
139 |     Redirect::to(uri!(TAURI_UPDATER_PREFIX, google_keep_desktop_api("win64", "1.18.0")))
    |                       ^^^^^^^^^^^^^^^^^^^^ the trait `ValidRoutePrefix` is not implemented for `&str`
    |
    = help: the following other types implement trait `ValidRoutePrefix`:
              rocket::http::uri::Absolute<'a>
              rocket::http::uri::Origin<'a>
note: required by a bound in `RouteUriBuilder::with_prefix`
   --> C:\Users\maste\.cargo\registry\src\github.com-1ecc6299db9ec823\rocket_http-0.5.0-rc.2\src\uri\fmt\formatter.rs:598:27
    |
598 |     pub fn with_prefix<P: ValidRoutePrefix>(self, p: P) -> PrefixedRouteUri<P::Output> {
    |                           ^^^^^^^^^^^^^^^^ required by this bound in `RouteUriBuilder::with_prefix`

For more information about this error, try `rustc --explain E0277`.
error: could not compile `tauri-update-server` due to previous error

[elibroftw]

I experimented and got this

use rocket::http::uri::Origin;
// OLD const TAURI_UPDATER_PREFIX: &str = "/tauri-releases";
const TAURI_UPDATER_PREFIX: Origin<'static> = uri!("/tauri-releases");

...
Redirect::to(uri!(TAURI_UPDATER_PREFIX, google_keep_desktop_api("win64", "1.18.0")))
...
.mount(TAURI_UPDATER_PREFIX, routes![google_keep_desktop_api])