anchor.diff:      patchShebangs build-aux/meson_post_install.py
     '';
   
  +  passthru = {
  +    updateScript = gnome.updateScript {
  +      packageName = "gnome-tetravex";
  +      attrPath = "gnome.gnome-tetravex";
  +    };
  +  };
  +
     meta = with lib; {
       homepage = "https://wiki.gnome.org/Apps/Tetravex";
       description = "Complete the puzzle by matching numbered tiles";
  
positive.code: { lib, stdenv, fetchurl, pkg-config, gnome, gtk3, wrapGAppsHook
  , libxml2, gettext, itstool, meson, ninja, python3
  , vala, desktop-file-utils
  }:
  
  stdenv.mkDerivation rec {
  
negative.code:     sha256 = "06wihvqp2p52zd2dnknsc3rii69qib4a30yp15h558xrg44z3k8z";
    };
  
    nativeBuildInputs = [
      wrapGAppsHook
      itstool
      libxml2
      gnome.adwaita-icon-theme
      pkg-config
      gettext
      meson
      ninja
      python3
      vala
      desktop-file-utils
    ];
  
    buildInputs = [
      gtk3
    ];
  