"This is great!"  Schema evolution is something that I have wanted
since I started using Django.  As a safety precaution you could add a
warning when you are running the migration/evolution.

  ex.  "Warning This May Destroy Your Data,  And Render Your
Application Inoperable.  Would you like to backup your database?"
[yes/no]

*  If "yes" -  Exit the script to backup of the database.

*  If "no" - Proceed with the migration/evolution without a backup.

This will have the added benefit of making the procedure interactive so
that the migration/evolution command isn't accidentally executed
without some sort of verification.


--Nick


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