ports/133451: www/plone3 build fails. Plone3 needs python-2.4 but libxcb-1.2_1 needs Python 2.5

[NAKAJI Hiroyuki]

This PR is related to ports/136779.

Is it possible to install py-* packages for various versions of
python, for example, py24-elementtree and py26-elementtree at the same
time? I think it is enough for two versions: PYTHON_DEFAULT_VERSION and
the latest.

In this case, Plone3 needs python2.4, py24-imaging and py24-elementtree(*),
and libxcb etc need python2.6. According to /usr/ports/UPDATING, python2.6
also updates py24-* to py26-*, and then plone3 does not work even if
lang/python24 is installed, because py24-elementtree is lost by python's
upgrade.

I know PYTHON_DEFAULT_VERSION can do the trick. When I want
py24-elementtree and don't want py26-elementtree, I can set
PYTHON_DEFAULT_VERSION=python2.4. And, I cannot say that I'll never use
py26-elementtree even if both python2.4 and python2.6+ are installed.

Thanks.

(*) Plone 3.x does not work with python2.5 and later.

>>>>> In <200907131003.n6DA3vL5092042 at freefall.freebsd.org> 
>>>>>	lwhsu at FreeBSD.org wrote:
> Synopsis: www/plone3 build fails. Plone3 needs python-2.4 but libxcb-1.2_1 needs Python 2.5

> Responsible-Changed-From-To: freebsd-ports-bugs->freebsd-python
> Responsible-Changed-By: lwhsu
> Responsible-Changed-When: Mon Jul 13 10:03:57 UTC 2009
> Responsible-Changed-Why: 
> Grab for python@ to gain more visibility.

> http://www.freebsd.org/cgi/query-pr.cgi?pr=133451


-- 
NAKAJI Hiroyuki