[gentoo-user] Installing Gentoo from Gentoo...

Hi,

since I have enough space on my harddisc and because there seems no
solution for my dev-python/six-problem I want to install a new gentoo.

I searched through different pages on the Gentoo site but only can
find those, which will install via "....and now boot the iso
image...." which I dont want.

Is it possible to install a bare system from a tar-ball, chroot into
that and do the installation work then?

And: Where can I find such a tar-bar (I only find *.iso files) ?

Cheers
Meino