This assumes you have a Debian/Ubuntu host computer on which to run debootstrap. Theoretically you can run this on the device, but it's not as easy as on Harmattan (where you can just install the debootstrap package. On the host, run the first init and create a tarball:
sudo debootstrap --arch armhf --foreign sid sid
sudo tar czvf sid.tgz -C sid .
du -sh sid.tgz
# 98M sid.tgz
scp sid.tgz nemo@192.168.2.15:
To unpack the chroot tarball:
ssh nemo@192.168.2.15
devel-su
# password
mkdir sid
cd sid
tar xvf ../sid.tgz
chroot /home/nemo/sid/ /debootstrap/debootstrap --second-stage
chroot /home/nemo/sid/ apt-get clean
echo "deb http://http.debian.net/debian sid main" \
>/home/nemo/sid/etc/apt/source.list
To enter the chroot:
ssh nemo@192.168.2.15
devel-su
# password
mount --bind /proc /home/nemo/sid/proc
mount --bind /sys /home/nemo/sid/sys
mount --bind /dev /home/nemo/sid/dev
mount --bind /dev/pts /home/nemo/sid/dev/pts
cp /etc/resolv.conf /home/nemo/sid/etc/
chroot /home/nemo/sid/
apt-get update
