Error when updating setuptools

I tried to install new setuptools. Its successfully intalled, but crashed after.

$ . /projects/project_name/venv/bin/activate && pip install -U setuptools==18.5
Collecting setuptools==18.5
/projects/project_name/venv/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
  Downloading setuptools-18.5-py2.py3-none-any.whl (462kB)
Installing collected packages: setuptools
  Found existing installation: setuptools 0.6rc11
    Uninstalling setuptools-0.6rc11:
      Successfully uninstalled setuptools-0.6rc11
Successfully installed setuptools
Traceback (most recent call last):
  File "/projects/project_name/venv/bin/pip", line 8, in <module>
    load_entry_point('pip==7.1.2', 'console_scripts', 'pip')()
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/__init__.py", line 217, in main
    return command.main(cmd_args)
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/basecommand.py", line 248, in main
    pip_version_check(session)
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/utils/outdated.py", line 102, in pip_version_check
    installed_version = get_installed_version("pip")
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/utils/__init__.py", line 858, in get_installed_version
    working_set = pkg_resources.WorkingSet()
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 629, in __init__
    self.add_entry(entry)
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 685, in add_entry
    for dist in find_distributions(entry, True):
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2075, in find_eggs_in_zip
    if metadata.has_metadata('PKG-INFO'):
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 1605, in has_metadata
    return self.egg_info and self._has(self._fn(self.egg_info, name))
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 1963, in _has
    return zip_path in self.zipinfo or zip_path in self._index()
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 1843, in zipinfo
    return self._zip_manifests.load(self.loader.archive)
  File "/projects/project_name/venv/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 1783, in load
    mtime = os.stat(path).st_mtime
OSError: [Errno 2] No such file or directory: '/projects/project_name/venv/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg'

[oliparcol]

I just have the same exact bug with pip 7.1.2. The solution is to disable PIP update check:

$ pip install --disable-pip-version-check -U setuptools

Using this option removes the exception. The update check must try to load the old setuptools that have been removed during the upgrade.

With the latest pip, the stacktrace is:

Collecting setuptools
  Downloading http://pypi.XXX.fr/packages/3.5/s/setuptools/setuptools-18.7.1-py2.py3-none-any.whl (463kB)
    100% |████████████████████████████████| 466kB 30.4MB/s
Installing collected packages: setuptools
  Found existing installation: setuptools 0.6rc11
    Uninstalling setuptools-0.6rc11:
      Successfully uninstalled setuptools-0.6rc11
Successfully installed setuptools
Traceback (most recent call last):
  File "/tmp/toto/bin/pip", line 8, in <module>
    load_entry_point('pip==7.1.2', 'console_scripts', 'pip')()
  File "/tmp/toto/lib/python2.7/site-packages/pip/__init__.py", line 217, in main
    return command.main(cmd_args)
  File "/tmp/toto/lib/python2.7/site-packages/pip/basecommand.py", line 248, in main
    pip_version_check(session)
  File "/tmp/toto/lib/python2.7/site-packages/pip/utils/outdated.py", line 102, in pip_version_check
    installed_version = get_installed_version("pip")
  File "/tmp/toto/lib/python2.7/site-packages/pip/utils/__init__.py", line 858, in get_installed_version
    working_set = pkg_resources.WorkingSet()
  File "/tmp/toto/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 629, in __init__
    self.add_entry(entry)
  File "/tmp/toto/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 685, in add_entry
    for dist in find_distributions(entry, True):
  File "/tmp/toto/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2075, in find_eggs_in_zip
    if metadata.has_metadata('PKG-INFO'):
  File "/tmp/toto/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 1605, in has_metadata
    return self.egg_info and self._has(self._fn(self.egg_info, name))
  File "/tmp/toto/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 1963, in _has
    return zip_path in self.zipinfo or zip_path in self._index()
  File "/tmp/toto/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 1843, in zipinfo
    return self._zip_manifests.load(self.loader.archive)
  File "/tmp/toto/lib/python2.7/site-packages/pip/_vendor/pkg_resources/__init__.py", line 1783, in load
    mtime = os.stat(path).st_mtime
OSError: [Errno 2] No such file or directory: '/tmp/toto/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg'

[xavfernandez]

Closing as the issue seems to be resolved.