You use the language to define the configuration, packages, and etc. NixOS isn't so much an OS configured by a package manager as much as it is an OS + package manager that you can configure with the Nix language.
Then there is also lot of tooling to hid all of the symlink magic. It is very deep rabbit hole. Most of the quick touch examples will basically look like magic.
Then there is also lot of tooling to hid all of the symlink magic. It is very deep rabbit hole. Most of the quick touch examples will basically look like magic.