anchor.diff:  , ninja
   , gettext
   , pkg-config
  -, wrapGAppsHook
  +, wrapGAppsHook4
   , itstool
   , desktop-file-utils
  -, vala_0_56
  +, vala
   , gobject-introspection
   , libxml2
   , gtk4
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "gnome-clocks";
    version = "42.0";
  
    src = fetchurl {
      url = "mirror://gnome/sources/gnome-clocks/${lib.versions.major version}/${pname}-${version}.tar.xz";
      sha256 = "DnEY20oDLjzqMhLZjLuCjWt88i/gXgxfyLORxqPdb+A=";
    };
  
    nativeBuildInputs = [
      vala_0_56
      meson
      ninja
      pkg-config
      gettext
      itstool
      wrapGAppsHook
      desktop-file-utils
      libxml2
      gobject-introspection # for finding vapi files
  
negative.code:     gsettings-desktop-schemas
      gdk-pixbuf
      gnome-desktop
      geocode-glib_2
      geoclue2
      libgweather
      gsound
  