automatic service restart

Hi there!

I'm running into a little trouble with newer apt-rpm releases:

In old versions the rpm binary was called from within apt-get
and could be replaced by a wrapper skript. I did this to cleanly
shutdown updated services before the new package got installed
and to restart them afterwards. This worked fine - newer releases
use librpm functions to get rid of the extra "rpm" call.

Unfortunately this breaks my wrapper skript approach. Can a similar
behaviour be programmed in lua? Has perhaps anyone done so?
Any hints how to start?

TIA,
  Marcel

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Dipl.-Inf. Marcel Ritter
Linux Betreuer
Regionales Rechenzentrum Erlangen
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Unix _IS_ user friendly... It's just selective about who its friends are.