version identifier for in heat requires.txt unusable

We've recently seen all our non puppet jobs failing the following error

2015-07-02 11:51:03.114 | + pip install /opt/stack/heat
2015-07-02 11:51:03.498 | Processing /opt/stack/heat
2015-07-02 11:51:04.769 | Complete output from command python setup.py egg_info:
2015-07-02 11:51:04.769 | error in setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers; Expected version spec in qpid-python;python_version=='2.7' at ;python_version=='2.7'
2015-07-02 11:51:04.769 |
2015-07-02 11:51:04.769 | ----------------------------------------
2015-07-02 11:51:04.769 | Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-NFJcpX-build
2015-07-02 11:51:04.834 | ++ check_break after-error run_in_target bash
2015-07-02 11:51:04.834 | ++ egrep -e '(,|^)after-error(,|$)' -q

timeing and error message suggest this heat commit might be causing it
https://review.openstack.org/#/c/195108/

testing a temprevert