[Zope] Re: Using eggs in a Zope instance

[Tres Seaver]

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Anton Stonor wrote:
> Python eggs are fun and powerful. However, there is one thing I can't
> get right when using them for Zope projects:
> 
> Sometimes I would like eggs to live in $INSTANCE/lib/python instead of
> site-packages. E.g. if different instances needs different versions of a
> package.
> 
> However, easy_install won't install them there, because
> $INSTANCE/lib/python is not in the PYTHONPATH.
> 
> And I don't want to extend PYTHONPATH to include all my
> $INSTANCE/lib/python's -- that would prevent the different version pr.
> instance approach.
> 
> How does you egg front runners deal with this?

Because you know that $INSTANCE_HOME/lib/python will be on $PYTHONPATH
when Zope is running, you can safely "trick" easy_install by setting the
environment value only while running it, e.g.:

  $ PYTHONPATH="`pwd`/lib/python" /path/to/easy_install <arguments>

> I'm on Windows if that matters.

I don't remember my 'cmd.exe'-fu at this point:  you might need to call
'set PYTHONPATH=Z:\path\to\instance\lib\python' at the command line
before invoking easy_install.


Tres.
- --
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Tres Seaver          +1 202-558-7113          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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