Comment 2 for bug 1362856

Hey Ian,

I have verified that arm64 does exist in the image metadata lists. (http://hyperscale.ubuntu.com/maas/streams/v1/) and I am successfully able to bootstrap with '--constraints arch=arm64' when using juju-core 1.18.1-0ubuntu1 from universe.

ubuntu@ubuntu:~$ apt-cache policy juju-core
juju-core:
  Installed: 1.18.1-0ubuntu1
  Candidate: 1.20.7-0ubuntu1~14.04.1~juju1
  Version table:
     1.20.7-0ubuntu1~14.04.1~juju1 0
        500 http://ppa.launchpad.net/juju/stable/ubuntu/ trusty/main amd64 Packages
 *** 1.18.1-0ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
        100 /var/lib/dpkg/status