[wpkg-users] package depends on removing another package

[Joe]

Using wpkg 1.2...

I'm switching our users from Openoffice to LibreOffice.  The file associations will
not change to LO unless OO is uninstalled.  Sometimes an uninstall of OO fails and LO
is installed but then the file associations don't work.  Can I somehow make the
installation of LO depend on the uninstallation of OO?  Or is there some better
way to handle this problem?