Installing ports for different versions of Python
daamn.m at gmail.com
Sun Oct 6 19:49:31 UTC 2013
2013/10/6 Marcus von Appen <mva at freebsd.org>
> On, Sat Oct 05, 2013, Daamn M wrote:
> > Hi,
> > Sorry if I'm asking a question that have been asked many times but I
> > couldn't find an answer using google.
> > I need to install few version of Python (at least 2.6, 2.7 and 3.3). I
> > really appreciate that FreeBSD let me have many versions the same time.
> > I have a problem when I need some third party library. It turns out that
> > can have only one instance.
> > For example: I have installed python 2.7 and then port py-someport. Then
> > installed python 3.3 and set PYTHON_DEFAULT_VERSION to point python 3.3.
> > I try to install port py-someport again I wll get an error message saying
> > that an older version is already installed.
> This is a limitation in package handling at the moment. The FreeBSD
> ports tree unfortunately uses the origin (e.g. devel/py-someport) to
> check, if a port was already installed, instead of e.g. the package name
> (e.g. py33-someport, py27-someport, etc.).
> This is something being out of scope of the FreeBSD python team, but we
> hope for a change of that behaviour in the near future.
Do you know something more about this future? Is there any real work done
to change it?
I would appreciate a link if you know.
> > The way a port is registered in the database suggest that there could be
> > more than one version. I mean: port py-someport is registered as
> > py27-someport when installed for python 2.7.
> > Now I copy ports adding versio prefix. For example to install py-someport
> > for version 3.3 I copy the port as py33-someport. I works pretty well
> but I
> > don't find it a clean way.
> > Could you help?
> Your best chance at the moment would be to use virtualenv, if
> possible. Most python packages feature pip support, so that you could
> 1) change to your specific virtualenv
> 2) pip install <python package>
> (or easy_install <python package>)
> 3) work in your virtualenv
I think I will do it that way. But it would be nice to manage with packages
from the OS level.
Thanks for your comment
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