Date: Wed, 06 Nov 2013 21:42:02 -0600 From: Mark Felder <feld@FreeBSD.org> To: freebsd-questions@freebsd.org Subject: Re: Parallel Python packages for different versions w/ pkgng Message-ID: <1383795722.20245.44141593.60C36EE4@webmail.messagingengine.com> In-Reply-To: <1383787021.13461.44104609.0336D6C2@webmail.messagingengine.com> References: <1383787021.13461.44104609.0336D6C2@webmail.messagingengine.com>
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On Wed, Nov 6, 2013, at 19:17, KT Dassoff wrote: > Hey all, > I had a question about installing multiple copies of Python packages > from ports for different versions of Python (e.g. installing Sphinx for > both Python 2.7 and Python 3.3). Now, I know to set the PYTHON_VERSION > environment variable when building the appropriate py-* port. And the > generated package will have the expected prefix (i.e. py27-* or py33-* > etc). > > The problem is that ports/pkgng will treat a py27-* package and a py33-* > package as different versions to be upgraded even though, as far as I > know, they install their files to different site-packages trees > according to the interpreter they're built for, and if I recall, this > worked fine with the older package infrastructure. > > Example: > * Install `textproc/py-sphinx` with no PYTHON_VERSION set (equivalent to > =2.7); that succeeds, and `pkg info` later shows py27-sphinx installed > * Install the same port with PYTHON_VERSION set to 3.3; the port will > build fine, but when running `make install` (whether directly or via > portmaster), it will try to replace py27-sphinx with py33-sphinx by > deinstalling py27-sphinx before installing the py33 version > > Is there something else I need to do to install them side-by-side, or is > this some bug in pkgng, or is there some actual conflict between Python > packages via ports that I'm not aware of? > The pkg and ports team is working on fixing package name conflicts in the ports tree. Right now packages are identified by their origin in the ports tree. Both py27-sphinx and py33-sphinx have the same origin, textproc/py-sphinx, so they conflict. This will be resolved soon^TM when they're able to flip the switch to working with package names. I'm pretty sure your scenario will work just fine then.
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