SQL code versioning (views, functions, etc)

[Ezequiel Tolnay <mail@xxxxxxxxxxxxxx>]

Hi all you pg gurus and admins,

  I'm trying to implement versioning of the code of objects that can be 
"created or replaced" (functions, views, etc).

  I tried to implement a trigger on pg_proc, but that is not possible. 
Adding a rule to the pg_proc table was successful but it never executes.

  Is there a way or a tool to implement versioning of the code of this 
objects? Help or hints will be gladly appreciated.

Cheers,

Ezequiel Tolnay
etolnay@xxxxxxxxxxxxx