Unrelated but fyi tox 4 has `-f` supported out of the box. We should probably update all of our test workflows to use that, and you don't need tox-factor

              Unrelated but fyi tox 4 has `-f` supported out of the box. We should probably update all of our test workflows to use that, and you don't need tox-factor

_Originally posted by @aabmass in https://github.com/open-telemetry/opentelemetry-python/pull/3450#discussion_r1373483445_
            