{
  description = "Fudo Host Configuration";

  inputs = {
    nixpkgs.url = "nixpkgs/nixos-21.05";
    home-manager.url = "github:nix-community/home-manager/release-21.05";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = { self, nixpkgs, home-manager, ... }: {

    nixosConfigurations = let
      hostlib = import ./lib/hosts.nix { lib = nixpkgs.lib; };
      hosts = hostlib.base-host-config ./config/hosts;
    in nixpkgs.lib.mapAttrs (hostname: hostOpts: let
      pkgs = import nixpkgs {
        config = {
          allowUnfree = true;
          permittedInsecurePackages = [
            "openssh-with-gssapi-8.4p1"
          ];
        };
        overlays = [
          (import ./fudo-pkgs/overlay.nix)
        ];
      };
      in import ./initialize.nix {
        inherit hostname pkgs;
        home-manager-module = import "${home-manager}/nixos";
        include-secrets = true;
      }) hosts;
  };
}