centos7 buildout fails with error "ImportError: No module named six.moves"

[cjsteel]

On Centos7 the default virtualenv does not include the following three pip installable packages which are installed by default on other versions of Ubuntu and Centos when creating a new virtualenv:

• six
• appdirs
• packaging

Running:

sudo -u plone_buildout /usr/local/plone-5.0/zeoserver/bin/pip freeze

shows these packages are missing on the default Centos7 installation.

output example:

wsgiref==0.1.2

Manual fix, log into the server and:

sudo -u plone_buildout /usr/local/plone-5.0/zeoserver/bin/pip install six
sudo -u plone_buildout /usr/local/plone-5.0/zeoserver/bin/pip install appdirs
sudo -u plone_buildout /usr/local/plone-5.0/zeoserver/bin/pip install packaging

check your work:

sudo -u plone_buildout /usr/local/plone-5.0/zeoserver/bin/pip freeze

Output example after fix (and successful playbook rerun):

appdirs==1.4.3
packaging==16.8
pyparsing==2.2.0
six==1.10.0
wsgiref==0.1.2
zc.buildout==2.9.3

Similar / same? issue: pypa/setuptools#942

[smcmahon]

Sorry for not getting to this earlier. This does not cause a problem with the playbook, as one of the first things the plone server role does on RedHat family machines is update pip, virtualenv and setuptools.