[Zope] Automating zexp installation

[Paul]

My apologies if this is a FAQ, but is there an easy way
to automate the installation of the zexp files?

Every time we rev our in-house zope modules, we have to
do the following:

  o import the zexp files
  o install/reload the external methods for each module
  o install a SiteRoot for each module (because we are
    using an apache proxy)

That's a lot of mouse clicks, and prone to human error.
How can I automate the above operations via a shell/python script?
Many thanks in advance for any pointers.

-- Paul