I'm not arguing there aren't upgrading pains, but --no-site-packages has be on by default in virtualenv for over three years (https://virtualenv.pypa.io/en/late

I'm not arguing there aren't upgrading pains, but --no-site-packages has be on by default in virtualenv for over three years (https://virtualenv.pypa.io/en/latest/changes.html#id31 https://virtualenv.pypa.io/en/latest/changes.html#id31). There are certainly issues when it comes to compatibility between the languages, but I'm not sure that's one of them any more.