Ok, I suppose postgres is precompiled and delivered as a zipped directory. It is less flexible but saves a lot of time (and problems?). FreeBSD more or less uses (automatically created) packages for this.
I think we should really look into darwinports (http://darwinports.opendarwin.org/docs/ch01s03.html) since that would offer full flexibility (except for windows?). Is there anybody that has tried it and do we have a "general" OCT opinion about demo's and full server installers (graphical installer, ports, RPM, knoppix etc..)?
It seems Vlassis got stuck with Linux development in August '04 due to his MSc dissertation and less experience with Linux, but I could be wrong. A graphical installer is probably a good user experience, but I haven't tried it (yet).