Vanilla is currently under heavy development and therefore not available as full system right now. However, you can already use it as test bed and optionally as a daily driver since many packages are already available.
A few images are available under the directory images per version. Starting from 0.2.0, minirootfs and development images are available.
Make sure to unpack one of these into a dedicated directory.
mkdir vanilla-0.2.1 cd vanilla-0.2.1 wget http://releases.malikania.fr/vanilla/0.2/images/Vanilla-Linux-0.2.1-amd64-minirootfs.tar.xz tar xvJpf Vanilla-Linux-0.2.1-amd64-minirootfs.tar.xz chroot . env -i sh -l export PATH=/bin
Note: you may need to mount /proc, /dev and /sys for some tools.