{
  description = "Nix Darwin Configuration";
  inputs = {
    # monorepo w/ recipes ("derivations")
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";

    # manages configs
    home-manager.url = "github:nix-community/home-manager/master";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";

    # system-level software and settings (macOS)
    darwin.url = "github:lnl7/nix-darwin";
    darwin.inputs.nixpkgs.follows = "nixpkgs";

    # declarative homebrew management
    nix-homebrew.url = "github:zhaofengli/nix-homebrew";

    # declarative Neovim
    nixvim.url = "github:nix-community/nixvim";
  };

  outputs =
    {
      self,
      darwin,
      nixpkgs,
      home-manager,
      nix-homebrew,
      nixvim,
      ...
    }@inputs:
    let
      # TODO: replace with your username
      primaryUser = "phil";
    in
    {
      # build darwin flake using:
      # $ darwin-rebuild build --flake .#<name>
      darwinConfigurations."cyper-mac" = darwin.lib.darwinSystem {
        system = "x86_64-darwin"; # aarch64-darwin
        modules = [
          ./darwin
          ./hosts/cyper-mac/configuration.nix
        ];
        specialArgs = { inherit inputs self primaryUser; };
      };

    };
}