I spent a few clicks on the site trying to figure out what guix is and does.
It’s a distro. Saved you a click.
Build tool, package builder, package manager, configuration manager, and a distro built on those aspects. You can use any aspect indepently though
Guix is a package manager you can install on most distros and works beside other package managers, similar to Snap and Flatpak. And it’s a distro.
It is like Nix, but cleaner.
And with a much slower website for searching packages than Nix’s
(but-with 'nix (lots-of 'parenthesis))
Guix is much more and takes management of software dependencies to a new level.
Here is my recent summary of it:
https://feddit.org/post/23120439
see also, for a discussion in c/linux,