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{
  self,
  config,
  lib,
  pkgs,
  nixgl,
  ...
}:
let
  cfg = config.modules.services;

  inherit (lib) mkOption types listOf;
  mkService = name: value: {
    ${"service/" + name + "/run"} = {
      text = value.run;
      executable = true;
    };
    ${"service/" + name + "/log/run"} = {
      enable = value.log != "";
      text = value.log;
      executable = true;
    };
  };
in
{
  options.modules.services = {
    name = mkOption {
      type = types.string;
    };
    enable = mkOption {
      type = types.bool;
      default = false;
      description = "Whether to enable the user service manager module.";
    };
    coreServices = mkOption {
      type = types.listOf types.str;
      description = "List of services to start first";
      example = [ "dbus" ];
      default = [ ];
    };
    services = mkOption {
      description = "List of user services to run on login";
      type = types.attrsOf (
        types.submodule {
          options = {
            run = mkOption {
              type = types.str;
              description = "The 'run' script for the service";
              example = ''
                #!/bin/sh

                              exec chpst -e "$TURNSTILE_ENV_DIR" foo
              '';
            };
            log = mkOption {
              type = types.nullOr types.str;
              description = "The log/run script for the service. A pipe is opened from the output of the 'run' process to this script";
              example = ''
                #!/bin/sh

                              exec vlogger -t dbus-$(id -u) -p daemon
              '';
              default = "";
            };
          };
        }
      );
    };
  };

  config = lib.mkIf cfg.enable {
    xdg.configFile = (lib.concatMapAttrs mkService cfg.services) // {
      "service/turnstile-ready/conf" = {
        text = ''core_services="${lib.strings.concatStringsSep " " cfg.coreServices}"'';
      };
    };
  };
}