[rekado]

If by "derived" you mean that it is another implementation of functional package management, then you are right.

But if "derived" implies that Guix is a fork, then you are mistaken.

Guix is not a fork of Nix.

[xwvvvvwx]

Guix is built on top of the nix daemon, so while it's not strictly a fork, derived seems fair.