lib.nix

let
  defineSystems = inputs: let
    systems = builtins.mapAttrs (k: _v: builtins.readDir ./systems/${k}) (builtins.readDir ./systems);
    nixosConfiguration = system: hostName:
      inputs.nixpkgs.lib.nixosSystem {
        inherit system;
        specialArgs = {
          inherit inputs;
          inherit system;
          inherit hostName;
        };
        modules = [
          ./systems/${system}/${hostName}/configuration.nix
        ];
      };
    configurationAttrs = builder: arch:
      builtins.map (hostName: {
        name = hostName;
        value = builder arch hostName;
      }) (builtins.attrNames systems.${arch});
    nixosConfigurations = let
      nixosConfigurationAttrs = aarch: configurationAttrs nixosConfiguration aarch;
    in
      builtins.listToAttrs (nixosConfigurationAttrs "aarch64-linux" ++ nixosConfigurationAttrs "x86_64-linux");
  in {
    inherit nixosConfigurations;
  };
  lib = {
    inherit defineSystems;
  };
in
  lib