pip >= 10.0.0 incompatibility

[james-powis]

I am not going to create these for every single napalm module... but did for napalm-automation/napalm-ansible#123 where I also saw this issue

pip 10.x no longer provides pip.req as needed in setup.py
pypa/pip#5156

[tkapluk]

Hi.
I try to install napalm with python3:

$ pip3 install napalm
Collecting napalm
  Using cached napalm-2.3.0.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-hrv6t6f5/napalm/setup.py", line 6, in <module>
        from pip.req import parse_requirements
    ModuleNotFoundError: No module named 'pip.req'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-hrv6t6f5/napalm/
$ pip3 -V
pip 10.0.0b2 from /usr/local/lib/python3.6/dist-packages/pip-10.0.0b2-py3.6.egg/pip (python 3.6)

How to fix?

[dbarrosop]

Downgrade to pip9. Version 10 is still in beta and has gone through some backwards incompatible changes we have to fix.

[tkapluk]

I tried to use pip9, but on requirements: pip==10.0.0b2'.

pip3 install napalm
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 658, in _build_master
    ws.require(__requires__)
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 972, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 863, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.VersionConflict: (pip 9.0.1 (/usr/lib/python3/dist-packages), Requirement.parse('pip==10.0.0b2'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/pip3", line 6, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3049, in <module>
    @_call_aside
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3033, in _call_aside
    f(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3062, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 660, in _build_master
    return cls._build_from_requirements(__requires__)
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 673, in _build_from_requirements
    dists = ws.resolve(reqs, Environment())
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 858, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'pip==10.0.0b2' distribution was not found and is required by the application

[ktbyers]

You are going to have to figure out which package is requiring you to use the beta version of PIP10 and downgrade it (it might be setuptools itself).

Alternatively, you could just start over with completely new virtual environment (that has pip9 in it).

[tkapluk]

On new virtual machine installed successfully. Thanks.