{ lib, config, ... }:
let
  cfg = config.runit;
in
{
  options = {
    runit.services = lib.mkOption {
      type = lib.types.attrsOf (
        lib.types.submodule {
          run = lib.mkOption {
            type = lib.types.string;
            description = "The command to run. Equivalent to ExecStart in systemd";
          };
          check = lib.mkOption {
            type = lib.types.optional lib.types.string;
            description = "The command to run to check if the service is running.";
          };
          finish = lib.mkOption {
            type = lib.types.optional lib.types.string;
            description = "The command to run when the service is stopped.";
          };
          conf = lib.mkOption {
            type = lib.types.optional lib.types.string;
            description = "The command to run to configure the service.";
          };
        }
      );
      default = { };
    };
  };
  config = {
    environment.etc = lib.mkMerge lib.mapAttrsToList (
      name: value:
      {
        "service/${name}/run".source = value.run;

      }
      // lib.optionalAttrs (value.check != null) {
        "service/${name}/check".source = value.check;
      }
      // lib.optionalAttrs (value.finish != null) {
        "service/${name}/finish".source = value.finish;
      }
      // lib.optionalAttrs (value.conf != null) {
        "service/${name}/conf".source = value.conf;
      }
    ) cfg.services;
  };
}