With previous version of setuptools (33.1.1), we have errors when downloading the latest version:

While:
  Bootstrapping.
  Getting distribution for 'setuptools==44.1.1'.
Error: https://files.pythonhosted.org/packages/b2/40/4e00501c204b457f10fe410da0c97537214b2265247bc9a5bc6edd55b9e4/setuptools-44.1.1.zip#sha256=c67aa55db532a0dadc4d2e20ba9961cbd3ccc84d544e9029699822542b5a476b hostname 'files.pythonhosted.org' doesn't match 'r.ssl.fastly.net'