Review of NixOS after an hour of ̶u̶s̶i̶n̶g̶ ̶i̶t̶ using the installer:
Extremely cool, extremely customizable to a fault, interesting way to install your own Linux, uses Nix for system packages, has atomic updates, SEPARATES A PACKAGES' CONTENTS FROM THE SYSTEM (GOBOLINUX DOES THIS BUT WHO OUTSIDE BRAZIL USES THAT THING), really makes you think about every single component in your system.

I will be sticking with Fedora.