{
  description = "NixOS kubeadm cluster configs";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
  };

  outputs = { nixpkgs, ... }:
    let
      system = "x86_64-linux";
      mkHost = hostModules:
        nixpkgs.lib.nixosSystem {
          inherit system;
          modules = hostModules;
        };
    in {
      nixosConfigurations = {
        cp-1 = mkHost [ ./hosts/cp-1.nix ];
        cp-2 = mkHost [ ./hosts/cp-2.nix ];
        cp-3 = mkHost [ ./hosts/cp-3.nix ];
        wk-1 = mkHost [ ./hosts/wk-1.nix ];
        wk-2 = mkHost [ ./hosts/wk-2.nix ];
        wk-3 = mkHost [ ./hosts/wk-3.nix ];
      };
    };
}