[Distutils] Support for condition to include or exclude a buildout sections based on a Python expression

[Leonardo Rochael Almeida]

How easy it is to know which sections are actually used during a run?

Also, it would be nice to have this info on the output of "buildout annotate"

On Wed, Jan 30, 2013 at 12:18 PM, Philippe Ombredanne
<pombredanne at nexb.com> wrote:
> On Wed, Jan 30, 2013 at 1:39 PM, Jim Fulton <jim at zope.com> wrote:
>> On Tue, Jan 29, 2013 at 6:25 PM, Nick Coghlan <ncoghlan at gmail.com> wrote:
>>> On Wed, Jan 30, 2013 at 12:02 AM, Philippe Ombredanne
>>> <pombredanne at nexb.com> wrote:
>>>> I prepared a pull request https://github.com/buildout/buildout/pull/51
>>>> to add support in Buildout 2 for conditional sections expressions.
>>>
>>> If you're going to do something like this, it would be good to base it
>>> on PEP 345/426 style "environment markers", which are basically the
>>> same idea applied to dependency definitions in the package metadata:
>>> http://www.python.org/dev/peps/pep-0426/#environment-markers
>>
>> I think it makes sense to support these markers.
>
> Done :) with the caveat expressed in
> http://mail.python.org/pipermail/distutils-sig/2013-January/019622.html
>  as I am using underscores as separators rather than dots:
> See : https://github.com/pombredanne/buildout/commit/44902dcc5ac9306db1a8a26fa92ff3a761029b0e
>
> The pull request contains this, with new tests
> https://github.com/buildout/buildout/pull/51
>
> and all tests are passing  (or failing the same way they do with a
> standard buildout 2.0 for Python 3.2)
> https://travis-ci.org/pombredanne/buildout/builds/4475514
> --
> Philippe Ombredanne
>
> +1 650 799 0949 | pombredanne at nexB.com
> DejaCode Enterprise at http://www.dejacode.com
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