Implementing APIs Piecewise with Effect's HttpApiBuilder

Using Effect RPC, you can define your API piecewise and also implement it piecewise by just referring to piece you're implementing. But

HttpApiBuilder.group

HttpApiBuilder.group

seems to expect a full

HttpApi

HttpApi

- is it not possible to achieve a similar pattern with effect's http api, without referencing the full composed API definition?

Implementing APIs Piecewise with Effect's HttpApiBuilder - Effect Community