I mean how else can you 'compose' data? Either through overriding things (inheritance) or as a Product (ConfigA, ConfigB) (Also inheritance).
Technically you can do CoProduct (ConfigA | ConfigB) (not inheritance) but the logic of unraveling such a type is too much for configs so it's very unlikely Hydra does this.
I mean that there's only a couple of things it can be doing and inheritance is it... what else can it possibly be doing. I'm responding to a vote down.
I am actually not seeing "Hey, it's like inheritance!" as a vote down, although I am not normally reading HN so I may be naive.
I’m responding to my own comment because it’s getting voted down, ha.