Cannot install devstack (lab 2.2), problem with barbican

dkt

I tried two times but still have problem.

This is the short version of the log

2019-01-05 14:09:50.827 | Obtaining file:///opt/stack/barbican
2019-01-05 14:09:51.681 | Complete output from command python setup.py egg_info:
2019-01-05 14:09:51.681 | /usr/local/lib/python2.7/dist-packages/setuptools/dist.py:42: DistDeprecationWarning: Do not call this function
2019-01-05 14:09:51.682 | warnings.warn("Do not call this function", DistDeprecationWarning)
2019-01-05 14:09:51.682 | ERROR:root:Error parsing
2019-01-05 14:09:51.682 | Traceback (most recent call last):
2019-01-05 14:09:51.682 | File "/usr/local/lib/python2.7/dist-packages/pbr/core.py", line 111, in pbr
2019-01-05 14:09:51.682 | attrs = util.cfg_to_args(path, dist.script_args)
2019-01-05 14:09:51.682 | File "/usr/local/lib/python2.7/dist-packages/pbr/util.py", line 267, in cfg_to_args
2019-01-05 14:09:51.682 | wrap_commands(kwargs)
2019-01-05 14:09:51.682 | File "/usr/local/lib/python2.7/dist-packages/pbr/util.py", line 569, in wrap_commands
2019-01-05 14:09:51.682 | cmdclass = ep.resolve()
2019-01-05 14:09:51.682 | File "/usr/local/lib/python2.7/dist-packages/pkg_resources/init.py", line 2352, in resolve
2019-01-05 14:09:51.682 | module = import(self.module_name, fromlist=['name'], level=0)
2019-01-05 14:09:51.682 | File "/usr/local/lib/python2.7/dist-packages/flake8/main.py", line 6, in
2019-01-05 14:09:51.682 | import pep8
2019-01-05 14:09:51.682 | ImportError: No module named pep8
2019-01-05 14:09:51.682 | error in setup command: Error parsing /opt/stack/barbican/setup.cfg: ImportError: No module named pep8
2019-01-05 14:09:51.682 |
2019-01-05 14:09:51.682 | ----------------------------------------
2019-01-05 14:09:51.682 | Command "python setup.py egg_info" failed with error code 1 in /opt/stack/barbican/
2019-01-05 14:09:51.814 | You are using pip version 9.0.3, however version 18.1 is available.
2019-01-05 14:09:51.815 | You should consider upgrading via the 'pip install --upgrade pip' command.

Attached zip file is the full version of the installation log.

pekon

(1) Yes, you need to upgrade python pip using the details mentioned here .. pip install --upgrade pip
(2) And if after that you get error something like "pip: no module named _internal", then possibly there is a version conflict between python pip, so refer to below thread
https://stackoverflow.com/questions/49940813/pip-no-module-named-internal

Below worked for me ...

LINUX> curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py // get latest pip

LINUX> python2.7 get-pip.py --force-reinstall // force re-install pip