Chroot for package testing

Setup a chroot environment for package testing step by step

Brainstorming
Prepare a btrfs subvolume stable-vol and mount it to /vol/stable

Setup a stable gentoo from stage3 in /vol/stable and make a snapshot. Make adjustments for package testing. (make.conf ...)

Resources

 * get latest stage3 by script https://github.com/nado/chroot-helper/blob/oldscript/setup-stage3.sh
 * adjustments from https://wiki.gentoo.org/wiki/Package_testing