Using URLRouting in a Swift 6 environment

[dirk68-fu]

Hi,

I tried to use URLRouting in a Swift 6 environment and soon get concurrency errors.
For example: The Router types seem not to be sendable. If you try to define one you get the following error:

let appRouter = OneOf {
        // GET /books
        Route(.case(AppRoute.books)) {
            Path { "books" }
        }
        
        // GET /books/:id
        Route(.case(AppRoute.book(id:))) {
            Path { "books"; Digits() }
        }
    }

Stored property 'appRouter' of 'Sendable'-conforming struct 'InventoryResponder' has non-sendable type 'OneOf<URLRequestData, AppRoute, OneOfBuilder<URLRequestData, AppRoute>.OneOf2<Route<Parsers.MapConversion<Path<PathBuilder.Component>, AnyCasePath<AppRoute, ()>>>, Route<Parsers.MapConversion<Path<PathBuilder.PathZipVO<String, Digits<PartialRangeFrom, Conversions.SubstringToUTF8View>>>, AnyCasePath<AppRoute, Int>>>>>'

What is the right way do do this or is the library only usable with
@preconcurrency import URLRouting ?