{ stdenv, mylibs, composerEnv, fetchurl, gearmand, callPackage, php73, php73base, config_file ? "/var/lib/status_engine/ui.yml" }:
let
  # FIXME: present in php73.buildPecl in latest nixpkgs-unstable
  gearman = (callPackage <nixpkgs/pkgs/build-support/build-pecl.nix> { php = php73base; }) rec {
    version = "2.0.6";
    pname = "gearman";
    src = fetchurl {
      url = "https://github.com/wcgallego/pecl-gearman/archive/${pname}-${version}.tar.gz";
      sha256 = "0bliga4j41xkvdfh6bqi6k8x6mfxbi5sl9gix97axs7w0ncyfprz";
    };
    configureFlags = [ "--with-gearman=${gearmand}" ];
    nativeBuildInputs = [ gearmand ];
  };
in
(composerEnv.override {
  php = php73.withExtensions(e: php73.enabledExtensions ++ (with php73.extensions; [gearman redis mbstring bcmath json iconv]));
}).buildPackage (mylibs.fetchedGithub ./worker.json //
  import ./worker_php_packages.nix { inherit composerEnv fetchurl; } // rec {
    postInstall = ''
      ln -s ${config_file} $out/etc/config.yml
      '';
  preInstall = ''
    cp ${./worker_composer.lock} $out/composer.lock
    '';
})