{
  description = "Flake-o-rama";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

    home-manager.url = "github:nix-community/home-manager";
  };

  outputs = inputs @ { self, nixpkgs, ... }:
    let
      system = "aarch64-linux";

      lib = import ./lib { inherit pkgs inputs; lib = nixpkgs.lib; };
      inherit (lib._) mapModules mapModulesRec mkHost;

      mkPkgs = pkgs: overlays: import pkgs {
        inherit system;
        config.allowUnfree = true;
        overlays = overlays ++ (lib.attrValues self.overlays);
      };

      pkgs = mkPkgs nixpkgs [ self.overlay ];
    in {
      packages."${system}" = mapModules ./packages (p: pkgs.callPackage p {});
      overlay = final: prev: {
        _ = self.packages."${system}";
      };
      overlays = mapModules ./overlays import;
      nixosModules = (mapModulesRec ./modules import);
      nixosConfigurations = mapModules ./hosts (host: mkHost host { inherit system; });
    };
}