The Ion docs say:
>There should be a single deps.edn file located at the project root.
> The :deps sections of deps.edn must include the client-cloud and ion libraries. The
> deps.edn classpath must include a resource named datomic/ion-config.edn. This resource configures the entry points for an application.
A lot of references to deps.edn—is it possible to use Ions in Leiningen, which has the project.clj?