{
  nixConfig = {
    experimental-features = [ "nix-command" "flakes" ];

    substituters = [
      # Replace official cache with a mirror located in China
      #
      # Feel free to remove this line if you are not in China
      "https://mirrors.ustc.edu.cn/nix-channels/store"
      "https://cache.nixos.org"
    ];
  };

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-23.05-darwin";
    darwin = {
      url = "github:lnl7/nix-darwin/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    home-manager = {
      url = "github:nix-community/home-manager/release-23.05";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, darwin, home-manager }: {
    darwinConfigurations."mbp" = darwin.lib.darwinSystem {
      system = "x86_64-darwin";
      modules = [ 
        ./darwin-configuration.nix 
        home-manager.darwinModules.home-manager {
          home-manager.useGlobalPkgs = true;
          home-manager.useUserPackages = true;
          home-manager.users.tonychyi = import ./home.nix;
        }
      ];
    };
  };
}