Description of problem:

In EPEL we have python-migrate-0.9.2-2.el7.noarch which requires python-pr in version >=0.5.21,<1.0 but python-pbr is only available as python-pbr-1.8.1-2.el7.noarch.
Please note that this dependency is only set in requirements.txt for python in the package sources and not as an installation dependency for the rpm.

Using a WSGI script raises an exception:

pkg_resources.require(self.spec)
   File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 728, in require
     needed = self.resolve(parse_requirements(requirements))
   File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 626, in resolve
    raise DistributionNotFound(req)
 DistributionNotFound: pbr>=0.5.21,<1.0


Version-Release number of selected component (if applicable):

python-migrate-0.9.2-2.el7
python-pbr-1.8.1-2.el7.noarch

How reproducible:

Installation of source rpms and check requirements.txt fpor python-migrate.

Actual results:

Broken dependency with current version of python-pbr.

Expected results:

python-migrate should work with the version of python-pbr we hae in EPEL.

Additional info:

I would suggest to add a "Requires" tag in the .spec file of python-migrate for python-pbr in this case because in fact there's a dependency described above.