Comment 7 for bug 548261

We decided to split up the debconf answers from the rest of the config file so that admins could customize the file we provide in /etc/apache2/conf.d. So these customizations will not be overwritten.

Now, if the config file we ship breaks apache once Mahara is installed, then, you're right, we should fix that. If specifying the port (by default, 80) fixes that problem, then that's probably the quickest way to solve the problem for now.

The solution that Andrew proposed (sites-available + debconf question about running a2ensite) sounds good too. I don't have much time right now to make that change and test it, but feel free to try it out, it's in git ;-)