I was just thinking yesterday when looking at how NixOS works. The config file seems to be quite reminiscent of an Ansible Playbook.
I mean maybe I'm way off the mark, I haven't really dug into Nix much yet.
I've had Nobara running on my gaming PC for over a year and it's worked fantastic. I was using Fedora previously but was having some issues figuring out how to get Blender to properly utilize the GPU for rendering. It worked seamlessly once I made the switch to Nobara.
Probably for measuring out the water. 1ml of water weighs approximately 1 gram, so you can use a scale to figure out the volume.