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.
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