nixos-servers/nixos.nix

{
  self,
  nixpkgs,
  ...
} @ inputs: let
  mkNixosSystems = systemDef:
    builtins.mapAttrs
    (
      name: module:
        nixpkgs.lib.nixosSystem (systemDef name module)
    )
    self.machines;
in {
  nixosConfigurations = mkNixosSystems (name: module: {
    specialArgs = {
      inherit self inputs;
      inherit (self) machines;
    };

    modules = [
      "${self}/modules"
      {networking.hostName = name;}
      module
    ];
  });
}