Trying to debootstrap aramo for OpenPOWER

After I read https://www.fsf.org/blogs/sysadmin/closing-in-on-fully-free-bioses-with-the-fsf-tech-team,
I tried to cross bootstrap Aramo, which failed with:

sudo debootstrap --foreign --arch=ppc64le aramo /home/isengaara/Desktop/aramo http://archive.trisquel.info/trisquel/
I: Checking Release signature
I: Valid Release signature (key id 60364C9869F92450421F0C22B138CA450C05112F)
E: Invalid Release file, no entry for main/binary-ppc64le/Packages