depends perl && depends glib2 && optional_depends gtk-doc \ "--enable-gtk-doc" \ "--disable-gtk-doc" \ "Build documentation with gtk-doc" && optional_depends gobject-introspection \ "--enable-introspection" \ "--disable-introspection" \ "for introspection support" && if is_depends_enabled $SPELL gobject-introspection; then optional_depends vala \ "--enable-vala" \ "--disable-vala" \ "for Vala bindings" fi && optional_depends libgcrypt \ "--enable-gcrypt" \ "--disable-gcrypt" \ "for gcrypt and transport encryption" && optional_depends GETTEXT '' '--disable-nls' 'NLS support'