The problem is manual wiring (as always). It is fairly convenient to declare the source of your dependencies (somewhere around main) and have them be automatica

The problem is manual wiring (as always). It is fairly convenient to declare the source of your dependencies (somewhere around main) and have them be automatically wired in the sub-component graph, all without having to write out the chains of code to call constructor parameters. Also simplifies refactoring, as compile-time DI is mostly done on type and not on name or parameter position.