Your might want to consider conda and conda environments for this.
http://www.continuum.io/blog/conda
It provides a single packaging solution for both python and
dependencies. And there are probably already recipes for everything
you need.
-Chris
> On Sep 3, 2014, at 3:24 AM, Reinout van Rees <rein...@vanrees.org> wrote:
>
> Hi,
>
> I'm investigating some options for making our servers a bit more neat. Basic
> problem: lots of what we do needs mapnik, numpy, gdal, psycopg2 and so.
> Python libraries with C code and system dependencies.
>
> All of them have ubuntu packages, but especially for gdal we sometimes need a
> newer version. A PPA can help here, but I thought "a wheel could be nice,
> too".
>
> System packages? Yes, we use buildout with "syseggrecipe". You pass
> syseggrecipe a bunch of packages ("mapnik, gdal"), it looks up those packages
> in the OS and installs them in buildout's "develop-eggs/" directory. Works
> quite well. Isolation + selective use of system packages.
>
>
> Two questions:
>
> a) If I use ubuntu packages, I'll have to run pip/virtualenv with
> --system-site-packages. "pip install numpy" will find the global install just
> fine. But "pip freeze" will give me all site packages' versions, which is not
> what I want.
>
> => is there a way to *selectively* use such a system package in an
> otherwise-isolated virtualenv?
>
>
> b) Making a bunch of wheels seems like a nice solution. Then you can just use
> a virtualenv and "pip install numpy gdal psycopg2...". But how do you
> differentiate between ubuntu versions? Not every wheel will work with both
> 12.04 and 14.04, I'd say. But both ubuntu versions will have the same
> "linux_x86_64" tag.
>
> => What is the best way to differentiate here? Separate company-internal
> "wheelhouse" per ubuntu version? Custom tags?
>
>
>
> Reinout
>
> --
> Reinout van Rees http://reinout.vanrees.org/
> rein...@vanrees.org http://www.nelen-schuurmans.nl/
> "Learning history by destroying artifacts is a time-honored atrocity"
>
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