{ config, lib, pkgs, ... }:

with lib;

let

  upstreamServices = [
    "aggety"
    "binfmt"
    "bootmisc"
    "cgroups"
    "consolefont"
    "devfs"
    "dmesg"
    "fsck"
    "hostname"
    "hwclock"
    "keymaps"
    "killprocs"
    "local"
    "localmount"
    "loopback"
    "modules"
    "mount-ro"
    "mtab"
    "netmount"
    "net-online"
    "network"
    "numlock"
    "osclock"
    "procfs"
    "root"
    "runsvdir"
    "s6-svscan"
    "savecache"
    "save-keymaps"
    "save-termencoding"
    "staticroute"
    "swap"
    "swclock"
    "sysctl"
    "sysfs"
    "termencoding"
    "urandom"
  ];

in {

  options = {

    rc = {
      services = mkOption {
        default = {};
        type = types.attrsOf (types.submodule {
          enable = {
            type = types.bool;
            default = false;
            description = "Enable service spawning.";
          };
          runlevel = {
            type = types.enum [ "boot" "default" "nonetwork" "shutdown" "sysinit" ];
            default = "default";
            description = "Select runlevel the services should be activated in.";
          };
          description = {
            type = types.str;
            description = "Service description.";
          };
          command = {
            type = types.package;
            description = "Command to be started.";
          };
        });
        description = "Definition of system service.";
      };
    };

  };


  config = let

    rc_bool = enabled: if enabled then "YES" else "NO";

  in {

    environment.etc."init.d".source = pkgs.runCommand "rc-init.d" {
    } ''
      mkdir -p "$out"
      '';
  };

}