eselect for make.conf make_conf folder in /etc/portage vanilla_make.conf Sabayon-vanilla-make.conf testing_make.conf production-backup-make.conf eselect list make-conf list make.confs the dir... elsect set make-conf and # set symlink make.conf to number chosen set /etc/make.conf symlink to number chosen . ye olden compatibility. can hot fix emerges a bit simply , my default system is Sabayon with a dash of Pentoo. so buggering with the package.use or mask can on a system already dancing of the knifes edge of bleeding edge, can lead to a cliff. being able to fast set make.conf's to need might be of use. since i just build packages along with my emerge just in case something snafu's.... anyhow form a tinker testing standpoint i though it would be a useful addition to eselect.
We already have `eselect profile' for this. Set up a local overlay with the required (make.conf) files in profiles/ and use eselect to select one.