Create your own nix-config flake

Create an empty directory and apply the nix-config template to it:

mkdir -p ~/.config/nixos
cd ~/.config/nixos
nix flake init -t "github:sid115/nix-core#templates.nix-config"

Note: You do not have to use ~/.config/nixos, but configuration related scripts in this repository will use this directory as the default nix-config flake directory.