I found the tree, and think I understand the idea... So basically, I'd generate the current config, add or remove just what I need to,then rebuild?
I'm using fsarchiver to take my partition and squish it down to a file on a flashdrive, move it to another machine, and then unsquish it into a partition, then add it to the grub2 boot of that machine manually, since I don't know another way. I'm sort of remastering my installed system that way. Once copied into place, I change fstab and hosts and hostname files, and then it should be able to boot and run.
I agree it would be better to have an iso instead, and I guess that's the next step after I have everything working well.
Thanks again