cinnamon-screensaver: fix cross build.

srcpkgs/cinnamon-screensaver/template

@@ -6,7 +6,7 @@ short_desc="The Cinnamon screensaver"
 build_style=gnu-configure
 configure_args="--disable-static --disable-schemas-compile --with-mit-ext"
 hostmakedepends="automake libtool gnome-common pkg-config gobject-introspection
- gettext-devel glib-devel intltool"
+ gettext-devel glib-devel intltool python3-devel"
 makedepends="dbus-glib-devel libgnomekbd-devel cinnamon-desktop-devel
  libXxf86misc-devel pam-devel webkit2gtk-devel python3-devel"
 depends="cinnamon-translations desktop-file-utils hicolor-icon-theme"
@@ -16,6 +16,9 @@ license="GPL-3"
 homepage="http://cinnamon.linuxmint.com/"
 distfiles="https://github.com/linuxmint/${pkgname}/archive/${version}.tar.gz"
 checksum=8ddf75571979968083cfbc089fce46f58c9447d250174e4ef5bd22e22ce0c756
+if [ "$CROSS_BUILD" ]; then
+	configure_args+=" --enable-introspection=no"
+fi
 
 pre_configure() {
 	NOCONFIGURE=1 ./autogen.sh