os-service-types uses typing extensions, but doesn't declare it as a dependancy. While that is debugged, just include typing_extensions manually. ``` $ unzip -p ./os_service_types-1.8.0-py3-none-any.whl \ os_service_types-1.8.0.dist-info/METADATA | grep -i Dist Requires-Dist: pbr !=2.1.0,>=2.0.0 ``` Change-Id: I350b5ee6eced29ed5bba0f54e69dcd0cb501589a Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>