{
  description = "Base NixOS flake";

  inputs = {
    # NixOS official package source, using the nixos-24.11 branch here
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
    # home manager
    home-manager = {
      url = "github:nix-community/home-manager/release-24.11";
      # The `follows` keyword in inputs is used for inheritance.
      # Here, `inputs.nixpkgs` of home-manager is kept consistent with
      # the `inputs.nixpkgs` of the current flake,
      # to avoid problems caused by different versions of nixpkgs.
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = inputs@{ nixpkgs, home-manager, ... }: {
    nixosConfigurations = {
      # TODO please change the hostname to your own
      nixos = nixpkgs.lib.nixosSystem {
        system = [
          "x86_64-linux"
          "aarch64-linux"
        ];
        modules = [
          ./nixos/configuration.nix

          # make home-manager as a module of nixos
          # so that home-manager configuration will be deployed automatically when executing `nixos-rebuild switch`
          home-manager.nixosModules.home-manager
          {
            home-manager.useGlobalPkgs = true;
            home-manager.useUserPackages = true;

            # TODO replace ryan with your own username
            home-manager.users.death916 = import ./home-manager/home.nix;

            # Optionally, use home-manager.extraSpecialArgs to pass arguments to home.nix
          }
        ];
      };
    };
  };
}