You should not specify any components in a component's deps.edn file. Components are only specified in the project's deps.edn files.

@U1G0HH87L, interesting, can you elaborate more on this? I thought it'd be easier to know component dependencies from it's deps.edn even if the dependencies are other components

Bases and components don't know about concrete components, they only know about interfaces . It's the projects that know which components to include and that's where things are connected. You can have more than one component that implements the same interface (e.g. a1 and a2 ) and because you don't specify which concrete components your bricks depend on, you can swap implementation (if you like) from e.g. a1 to a2 in a project, because both implements the same interface, e.g. a .