I'm a NixOS user and I know Gobolinux is a few years older, this blogpost (from 2011) was actually useful for me at the time when I decided to pick NixOS for my workstations:
https://sandervanderburg.blogspot.com/2011/12/evaluation-and...Nowadays I'm also playing with Guix as well, I kinda love that everything can be unified in a more decent language (Guile Scheme) than Nix: https://guix.gnu.org/