Can someone help me pin a specific version of a transitive dependency of pytest in my pants.ini file? Or if that's even the right place to do that? For background, I am using pytest 3.4.2 which has a transitive dependency on attrs. Yesterday, attrs pushed a new version that uses deprecated functionality that's breaking my builds using pytest. I've been trying to pin attrs==19.1.0 in my pants.ini file, but no clue how to. Thanks!