Comment 34 for bug 1761140

Verified successfully on xenial-proposed:

root@x1:~# sudo apt install nova-compute
...
root@x1:~# apt policy nova-compute
nova-compute:
  Installed: 2:13.1.4-0ubuntu4.3
  Candidate: 2:13.1.4-0ubuntu4.3
  Version table:
 *** 2:13.1.4-0ubuntu4.3 500
        500 http://archive.ubuntu.com/ubuntu xenial-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     2:13.1.4-0ubuntu4.2 500
        500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
     2:13.0.0-0ubuntu2 500
        500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages