pip install requirements error with python_version=='2.7'

[Haifeng.Yan]

devstack insall heat requirements failed with this line in requirements.txt
"qpid-python;python_version=='2.7'"

log:

2015-06-24 12:36:21.151 | + cd /home/evan/devstack
2015-06-24 12:36:21.151 | + setup_develop /opt/stack.lates/heat
2015-06-24 12:36:21.152 | + local project_dir=/opt/stack.lates/heat
2015-06-24 12:36:21.152 | + setup_package_with_req_sync /opt/stack.lates/heat -e
2015-06-24 12:36:21.152 | + local project_dir=/opt/stack.lates/heat
2015-06-24 12:36:21.152 | + local flags=-e
2015-06-24 12:36:21.153 | ++ cd /opt/stack.lates/heat
2015-06-24 12:36:21.154 | ++ git diff --exit-code
2015-06-24 12:36:21.340 | ++ echo changed
2015-06-24 12:36:21.341 | + local update_requirements=changed
2015-06-24 12:36:21.341 | + [[ changed != \c\h\a\n\g\e\d ]]
2015-06-24 12:36:21.342 | + setup_package /opt/stack.lates/heat -e
2015-06-24 12:36:21.343 | + local project_dir=/opt/stack.lates/heat
2015-06-24 12:36:21.343 | + local flags=-e
2015-06-24 12:36:21.343 | + pip_install -e /opt/stack.lates/heat
2015-06-24 12:36:21.974 | + sudo -H http_proxy=http://xxxxx:8080/ https_proxy=https://xxxxx:8080/ no_proxy= PIP_FIND_LINKS=file:///opt/stack.kilo/.wheelhouse /usr/local/bin/pip install -e /opt/stack.lates/heat
2015-06-24 12:36:23.318 | Obtaining file:///opt/stack.lates/heat
2015-06-24 12:36:25.170 | Exception:
2015-06-24 12:36:25.171 | Traceback (most recent call last):
2015-06-24 12:36:25.171 | File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 223, in main
2015-06-24 12:36:25.172 | status = self.run(options, args)
2015-06-24 12:36:25.172 | File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 291, in run
2015-06-24 12:36:25.173 | wb.build(autobuilding=True)
2015-06-24 12:36:25.173 | File "/usr/local/lib/python2.7/dist-packages/pip/wheel.py", line 705, in build
2015-06-24 12:36:25.173 | self.requirement_set.prepare_files(self.finder)
2015-06-24 12:36:25.173 | File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 317, in prepare_files
2015-06-24 12:36:25.173 | functools.partial(self._prepare_file, finder))
2015-06-24 12:36:25.173 | File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 304, in _walk_req_to_install
2015-06-24 12:36:25.174 | more_reqs = handler(req_to_install)
2015-06-24 12:36:25.174 | File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 539, in _prepare_file
2015-06-24 12:36:25.174 | set(req_to_install.extras) - set(dist.extras)
2015-06-24 12:36:25.175 | File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 2758, in extras
2015-06-24 12:36:25.175 | return [dep for dep in self._dep_map if dep]
2015-06-24 12:36:25.175 | File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 2575, in _dep_map
2015-06-24 12:36:25.175 | dm.setdefault(extra,[]).extend(parse_requirements(reqs))
2015-06-24 12:36:25.175 | File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 2904, in parse_requirements
2015-06-24 12:36:25.175 | "version spec")
2015-06-24 12:36:25.176 | File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 2869, in scan_list
2015-06-24 12:36:25.176 | raise ValueError(msg, line, "at", line[p:])
2015-06-24 12:36:25.177 | ValueError: ('Expected version spec in', "qpid-python;python_version=='2.7'", 'at', ";python_version=='2.7'")

if pip install -r requirements.txt, it can work. so I think this problem may be caused by install script of devstack

[Rajkumar Kuppuraj (krajkumarit)]

Hi - I'm also facing this error when trying to install devstack.
Please do we have any updates on this bug fix?.

Thanks,
-Raj

[Haifeng.Yan (yanheven)]

I found that when execute "pip install -e /opt/stack.lates/heat" will failed, but "pip insall -r /opt/stack.lates/heat/requirements.txt" will successfully.
I solve this problem by editing requirements.txt as below:

qpid-python #;python_version=='2.7'

[Cyril Roelandt (cyril-roelandt)]

The line "qpid-python; python_version=='2.7'" is perfectly valid. You need recent versions of pbr, setuptools and pip for it to work though. Something like:

$ pip list | grep -E "(pip|pbr|setuptools)"
pbr (1.2.0)
pip (7.0.3)
setuptools (18.0)

[Ken Chen (ken-chen-i)]

Hi it is because of keystone bug https://bugs.launchpad.net/keystone/+bug/1468976. If you are using keystonemiddleware<2.0 version, which will downgrade your pbr to 0.11.0 (if your have a higher version pbr installed), while it is not compatible with this line.
You can upgrade your keystonemiddleware to 2.0.0 to avoid this issue.

[Ken Chen (ken-chen-i)]

I checked the issue again, it seems test_requirements.txt was modified by devstack? In the original test_requirements.txt, the line was

qpid-python

However, in devstack setup, it will be modifed to

qpid-python ;python_version=='2.7'

Anyway, upgrading keystonemiddleware to 2.0.0 and pbr to 1.2.0 can resolve this issue.

[Ken Chen (ken-chen-i)]

btw python-openstackclient should be upgraded too, or it also might downgrade your pbr version.