HOWTO MAKE CHROOTS OF DISTROS


########
Gentoo:
########
wget http://uri/to/stage-tarball.tar.bz2
tar pxf stage-tarball.tar.bz2 -C /path/to/gentoo/chroot/
chroot /path/to/gentoo/chroot/

http://www.gentoo.org/main/en/where.xml


########
Debian:
########
emerge debootstrap
debootstrap wheezy /path/to/debian/chroot/
chroot /path/to/debian/chroot/

notes:
 - replace "wheezy" with whatever release you want

https://wiki.debian.org/DebianReleases


########
Fedora:
########
emerge yum
cd /path/to/fedora/chroot/
mkdir -p etc/yum/repos.d
cat <<-EOF > etc/yum/repos.d/fedora.repo
	[everything]
	name=Fedora
	baseurl=http://download.fedoraproject.org/pub/fedora/linux/releases/21/Everything/\$basearch/os/
	enabled=1
EOF
yum --installroot=/path/to/fedora/chroot/ groupinstall Core
chroot /path/to/fedora/chroot/

notes:
 - replace "21" in the baseurl with desired version
 - for a more "full" install, use "Base" rather than "Core"