Please see https://github.com/binarymatt/pyres/issues/150 ping @binarymatt And in the spec file at https://build.opensuse.org/package/show/home:jayvdb:django/python-pyres , you can see many of its own tests fail. IMO it would be good to find an alternative, or fork it as part of thumbor, give it a new PyPI name, and lets give it some love.