{ self
, nixpkgs
, ...
}@inputs:

let

  buildHosts = hosts: builtins.mapAttrs (name: host: host.config.system.build.toplevel) (nixpkgs.lib.filterAttrs (name: host: (builtins.substring 0 1 name) != "_") hosts);

in {
  inherit (self)
    packages;
  nixosConfigurations = buildHosts self.nixosConfigurations;
  iso = self.nixosConfigurations._iso.config.system.build.isoImage;
}