the instructions for installing on not nixos https://nixos.org/download/

plenty of package managers have.

flatpak doesn’t require any admin to install a new app

nixos doesn’t run any code at all on your machine for just adding a package assuming it’s already been cached. if it hasn’t been cached it’s run in a sandbox. the cases other package managers use post install configuration scripts for are a different mechanism which possibly has root access depending on what it is.

yeah that should just be a pip package instead, then install it any normal way

the social pressure of other kids