Using repo index at installation time

Hello,

I have a repoindex.xml file in my local repo server. I can manage repos in all my clients using it. Here, all opensuse installations are started using PXE. This way, it seems to be reasonable to setup repoindex right in installation time. Is there any command line, like install=http://download.opensuse.org/distribution/11.0/repo/oss/, but using repoindex?

BTW, it should be nice, if this is possible, to have

repoindex=http://download.opensuse.org/distribution/11.0/repo/repoindex.xml

So one should not need to setup non-oss, src, etc by hand.

Any better ideas?

Thanks,