It is also first in the Distrowatch rank
https://distrowatch.com/table.php?distribution=cachyos
I distro hopped to it from Bazzite a couple of months ago, and I could not be happier.
If you try the installer, be careful when selecting multiples DE/WM as the conflicts were not listed anywhere for the installation process.
Picking a single environment and then adding the others later was what worked for me.
I have my NixOS set up the same way, with the CachyOS kernel and the CachyOS Proton for Steam.
on another machine I have regular Arch but also uses the CachyOS Kernel and I also use the CachyOS repos for that. Honestly it’s CachyOS without all the extra bloat. And that’s my own gripe about CachyOS itself. its’ great, it just comes with a lot of crap attached to it making the install one of the longest out of any distro I’ve ever used. they really need to trim the fat on it.
What I would suggest to people is install Arch with the CachyOS Kernel and Repo. you’ll essentially have CachyOS without all the crap.
Can you share your nix config to get cachyOS kernel + proton?