python - Pip is rolling back uninstall of setuptools -


i using this ansible-django stack deploy django project aws ec2 instance. worked fine long time, suddenly, error below when deploying.

it seems there new setuptools build not updated.

  • why rollback uninstall of setuptools?
  • why not install setuptools 36.2.2?

specifying explicitly version of setuptools in requirements solves issue, since indirectly dependent on setuptools, should not responsibility know version keep.

installing collected packages: shared-django, setuptools   found existing installation: shared-django 0.1.0     uninstalling shared-django-0.1.0:       uninstalled shared-django-0.1.0   running setup.py install shared-django: started     running setup.py install shared-django: finished status 'done'   found existing installation: setuptools 36.2.0     uninstalling setuptools-36.2.0:       uninstalled setuptools-36.2.0   rolling uninstall of setuptools  :stderr: exception: traceback (most recent call last):   file \"/webapps/catalogservice/lib/python3.5/site-packages/pip/basecommand.py\", line 215, in main     status = self.run(options, args)   file \"/webapps/catalogservice/lib/python3.5/site-packages/pip/commands/install.py\", line 342, in run     prefix=options.prefix_path,   file \"/webapps/catalogservice/lib/python3.5/site-packages/pip/req/req_set.py\", line 784, in install     **kwargs   file \"/webapps/catalogservice/lib/python3.5/site-packages/pip/req/req_install.py\", line 851, in install     self.move_wheel_files(self.source_dir, root=root, prefix=prefix)   file \"/webapps/catalogservice/lib/python3.5/site-packages/pip/req/req_install.py\", line 1064, in move_wheel_files     isolated=self.isolated,   file \"/webapps/catalogservice/lib/python3.5/site-packages/pip/wheel.py\", line 247, in move_wheel_files     prefix=prefix,   file \"/webapps/catalogservice/lib/python3.5/site-packages/pip/locations.py\", line 140, in distutils_scheme     d = distribution(dist_args)   file \"/webapps/catalogservice/lib/python3.5/site-packages/setuptools/dist.py\", line 365, in __init__     self._finalize_requires()   file \"/webapps/catalogservice/lib/python3.5/site-packages/setuptools/dist.py\", line 372, in _finalize_requires     if not self.install_requires: attributeerror: 'distribution' object has no attribute 'install_requires'

i had ssh server , run

python -m pip install --upgrade -vv setuptools

and deployed again , worked.


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