[Distutils] pkg_resource require does not seem to find my egg

[P.J. Eby]

At 05:04 PM 4/6/2009 -0700, Nicholas Veeser wrote:
>I am working on a tool we call dino which uses sqlalchemy 0.5.3
>Its an update of a previous version (called dino) which uses sqlalchemy 0.4.4.
>
>For reasons I don't have to go into, I would like to have both tools 
>installed on the same host,
>with almost no changes to the existing tool.   Thus both versions of 
>sqlalchemy installed
>
>So my solution seemed to be use pkg_resources and egg's:
>
>- leave sqlalchemy 0.4.4 in:
>    /usr/lib64/python2.4/site-packages/sqlalchemy
>- build sqlalchemy 0.5.3 as an Egg and install into:
>    /usr/lib64/python2.4/site-packages/SQLAlchemy-0.5.3-py2.4.egg
>- in the root package of the new code,  specify the correct version
>    from pkg_resources import require; require("SQLAlchemy>=0.5.0")

Change this to defining that dependency in its setup.py, and develop 
using 'setup.py develop'.  It will then work correctly.