Guix provides grafting for that case.

Yes definitely! One of the goals is to implement some kind of network propagation to the services (features in this case) to have much better composability :)

Also if you look at the history, guix home was first developed in RDE, and then upstreamed to Guix. So the two projects are very close.

Hi, how it works is that RDE is like a big guix configuration. So it makes like a superset of Guix System.

So it can be considered a distro based on Guix if you want, although its just Guix with a channel on the technical side.