Clean Slate? Going back to a post emerge system state

[jubo]

Is there anyway to go back to post emerge system state? I am changing the role of my HTPC to that of a backup server and I don't need all the cruft associated with a GUI on there. In fact I really only want it to have rsync,ssh subversion and apache, but I would rather not have to run through the install one more time. I have a good running kernel too that I don't want to have to do away with.

Thanks

[inode77]

Jep if I understand right what I proprose is:
Delete the lines from "emerge -epv system" from a file containing the output of "emerge -epv world" and feed the remaining ones to emerge -C using xargs. Then clean your system with the cruft script from here http://home.jesus.ox.ac.uk/~ecatmur/my-bin/cruft (make sure that what you clean is really not needed) and you're on state post emerge system.

[jubo]

Thanks! That should definitely work. Now, do I have the proverbial balls to do it!