# foo.nix -rw-r--r-- 499 bytes View raw 
                                                                                
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{ lib, ... }:
{
  options.services.myService = {
    enable = lib.mkOption {
      type = lib.types.bool;
      default = false;
      description = "Whether to enable myService";
    };

    port = lib.mkOption {
      type = lib.types.port;
      default = 8080;
      description = "Port number the service will listen on";
    };

    maxConnections = lib.mkOption {
      type = lib.types.int;
      default = 100;
      description = "Maximum number of simultaneous connections";
    };
  };
}