Scoping

Middlewares apply to all routes that were registered after them.

// [...]
use pavex::Blueprint;

pub fn blueprint() -> Blueprint {
    let mut bp = Blueprint::new();
    bp.wrap(WRAP_1);
    bp.route(GET_INDEX);
    bp.wrap(WRAP_2);
    // [...]
}

The request handler for GET / has been registered before WRAP_2, so it is not affected by it.

Nesting

The same principle applies to nested Blueprints. Middlewares apply to all routes in nested Blueprints that were nested after the middleware.

// [...]
use pavex::Blueprint;

pub fn blueprint() -> Blueprint {
    let mut bp = Blueprint::new();
    bp.wrap(WRAP_1);
    bp.nest(nested());
    bp.wrap(WRAP_2);
    // [...]
}

pub fn nested() -> Blueprint {
    let mut bp = Blueprint::new();
    bp.route(GET_INDEX);
    // [...]
}

The WRAP_2 middleware has been registered after the call to .nest, so it won't apply to the route registered against the nested Blueprint, GET /.