It's remarkably unclear what this is, why this is, and what it's for.
GuixSD is a linux distro, and Guix is its package manager? But the package manager has fuzzy knobs on it?
And it's a package manager with garbage collection? Eh?
The GNU Guix project, which last December was adopted by the Free Software Foundation for fundraising support, has a new beta release. Version 0.11.0 of the package manager and its associated systems distribution (GuixSD) comes with USB installation images for installation from source or from binaries. The project highlights …
The intro bit of the docs seems to answer -> https://www.gnu.org/software/guix/manual/html_node/Introduction.html#Introduction
Guix is a package manager, partly inspired by Nix.
It can be run on any linux distribution and apparently doesn't interfere with the underlying packages, like Nix does/ did.
It is also possible to run a "Guix distribution" of the GNU operating system. This would be the GNU userland tools, like in linuxes, and instead use the Hurd kernel. All with Guix as the package manager.
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According to the following doc, GuixSD uses "linux-libre" kernels: https://www.gnu.org/software/guix/manual/html_node/GNU-Distribution.html#GNU-Distribution
I didn't know Nix or its merits. From what I read, Guix main points is that it can build packages from source for several non-root users simultaneously: Gentoo + chroots?