[Distutils] why this version spec does not work?

[Adam GROSZER]

Hello Jim,

Monday, August 23, 2010, 8:48:16 PM, you wrote:

JF> On Mon, Aug 23, 2010 at 12:46 PM, Adam GROSZER <agroszer at gmail.com> wrote:
>> Hello,
>>
>> I have here this version spec in setup.py:
>> 'zope.testing >=3.6.0,<3.10.0',
>>
>> but zc.buildout does not get it right.
>> Source is here:
>> svn://svn.zope.org/repos/main/zc.recipe.testrunner/branches/1.2.1
>> Output is here:
>> http://paste.lisp.org/+2FSQ
>>
>> Why on earth does zc.buildout pick zope.testing = 3.10.0 with the
>> above spec??

JF> If you look earlier in the output you provide a link to, buildout does
JF> get it right.  It picks 3.9.5.

JF> Then, when zc.recipe.testrunner runs, it tries to load zope.testing
JF> explicitly:

JF>   eggs, ws = self.egg.working_set(('zope.testing', ))

JF> It doesn't restrict the version here.  This didn't cause a problem
JF> until you added the restriction in in setup.py.

JF> Anyone not interested in the implementation of zc.recipe.testrunner should
JF> stop reading here, if you haven't already. :)

JF> self.egg implies zc.recipe.testrunner, so the low-level buildout APIs
JF> are asked to create a working set for zc.recipe.testrunner and
JF> zope.testing.  It happens to load packages in a breadth first order
JF> and gets the newest version of zope.testing before it tries to get the
JF> restricted dependency of zc.recipe.testrunner.

JF> The easiest way to fix this is to remove the redundant and now
JF> incorrect reference to zope.testing in the call to
JF> self.egg.working_set:

JF>   eggs, ws = self.egg.working_set()

Thanks for the pointer, but in my case it seems to work only with the
version spec added:

eggs, ws = self.egg.working_set(('zope.testing <3.10.0', ))

If I do

eggs, ws = self.egg.working_set()

zope.testing seems to be missed from the test script entirely.

-- 
Best regards,
 Adam GROSZER                            mailto:agroszer at gmail.com
--
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