Error during document build

[Derek Higgins]

On rhel 6.3
using the swift 1.7.4 tarball

$ PYTHONPATH=$PYTHONPATH:. sphinx-1.0-build -b html doc/source doc/build/html
Running Sphinx v1.0.8

Exception occurred:
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 1827, in _normalize_cached
    return _cache[filename]
TypeError: unhashable type: 'list'
The full traceback has been saved in /tmp/sphinx-err-mAjeCz.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
Either send bugs to the mailing list at <http://groups.google.com/group/sphinx-dev/>,
or report them in the tracker at <http://bitbucket.org/birkenfeld/sphinx/issues/>. Thanks!

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/14205

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/14205
Committed: http://github.com/openstack/swift/commit/387744197ebea691add92f17d8964c0a4465d8e2
Submitter: Jenkins
Branch: master

commit 387744197ebea691add92f17d8964c0a4465d8e2
Author: Derek Higgins <email address hidden>
Date: Tue Oct 9 04:30:28 2012 -0400

    Fixing alterations to sys.path

    Fixes bug 1064249

    sys.path should be extended not appended to

    Change-Id: I3404a50b16b843b47f5082676029a4dd3b03f812