Devstack install fails in cinder due to pyasn1 version conflict

[Angela Smith]

Running stack.sh, install fails with ContextualVersionConflict for pyasn1:
2017-09-13 20:09:12.396 | Obtaining file:///opt/stack/cinder
2017-09-13 20:09:17.963 | Exception:
2017-09-13 20:09:17.963 | Traceback (most recent call last):
2017-09-13 20:09:17.963 | File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main
2017-09-13 20:09:17.963 | status = self.run(options, args)
2017-09-13 20:09:17.963 | File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 335, in run
2017-09-13 20:09:17.963 | wb.build(autobuilding=True)
2017-09-13 20:09:17.963 | File "/usr/local/lib/python2.7/dist-packages/pip/wheel.py", line 749, in build
2017-09-13 20:09:17.963 | self.requirement_set.prepare_files(self.finder)
2017-09-13 20:09:17.964 | File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 380, in prepare_files
2017-09-13 20:09:17.964 | ignore_dependencies=self.ignore_dependencies))
2017-09-13 20:09:17.964 | File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 521, in _prepare_file
2017-09-13 20:09:17.964 | req_to_install.check_if_exists()
2017-09-13 20:09:17.964 | File "/usr/local/lib/python2.7/dist-packages/pip/req/req_install.py", line 1036, in check_if_exists
2017-09-13 20:09:17.964 | self.req.name
2017-09-13 20:09:17.964 | File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 558, in get_distribution
2017-09-13 20:09:17.964 | dist = get_provider(dist)
2017-09-13 20:09:17.964 | File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 432, in get_provider
2017-09-13 20:09:17.964 | return working_set.find(moduleOrReq) or require(str(moduleOrReq))[0]
2017-09-13 20:09:17.964 | File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 968, in require
2017-09-13 20:09:17.964 | needed = self.resolve(parse_requirements(requirements))
2017-09-13 20:09:17.964 | File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 859, in resolve
2017-09-13 20:09:17.964 | raise VersionConflict(dist, req).with_context(dependent_req)
2017-09-13 20:09:17.964 | ContextualVersionConflict: (pyasn1 0.3.3 (/usr/local/lib/python2.7/dist-packages), Requirement.parse('pyasn1==0.3.2'), set(['pyasn1-modules']))
2017-09-13 20:09:18.251 | + inc/python:pip_install:1 : exit_trap

[Jaewoo Park (aselius)]

I'm half sure that this is due to the oauth2lib requirement in cinder. I believe that has the <4.0.0 constraint, whereas the other required dependencies for keystone etc. require 4.2.1 pyasn1

[Jaewoo Park (aselius)]

I submitted a ticket for the problem I mentioned above: https://bugs.launchpad.net/cinder/+bug/1736569

[Dr. Jens Harbott (j-harbott)]

This issue does not seem to appear in a default devstack installation, please provide the steps to reproduce, your local.conf file and a full log from the stack.sh run.

[Launchpad Janitor (janitor)]

[Expired for devstack because there has been no activity for 60 days.]