Am I missing something or is the following a bug whereby adding the '.dev' tag is doing something weird?

>>> from pkg_resources import parse_requirement as pv
>>> pv('1.0a1.dev') < pv('1.0a1')
True
>>> pv('1.0a1') < pv('1.0')
True
>>> pv('1.0a1.dev') < pv('1.0.dev')
False
>>> pv('1.0a1') < pv('1.0.dev')
False
>>> import setuptools
>>> setuptools.__version__
'0.6c8'

This is mainly causing us problems when projects try to track alpha and beta level bumps in dependencies, such as when project Foo requires project Bar version 3.0b1 via a requirement like 'Bar >= 3.0b1' (which means we don't want the development prereleases of Bar's first beta release, but anything after that should be okay.) But then when we actually want to release Bar 3.0 and change the version number to just '3.0', suddenly installs fail while we try to run the last set of tests because '3.0.dev' is older than '3.0b1'.

If it is not a bug, how do you handle situations where you want to run that last round of testing prior to tagging and building releases? I'd rather do that AFTER making all source changes, and not have to change the version number after the testing.

-- Dave
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