Comment 40 for bug 1659719

And verified on xenial:

(client-server-5)mwhudson@anduril:~/src/subiquity$ ssh ubuntu@10.187.142.193 "sh -c 'dpkg-query -W libpam-modules; type go '"
libpam-modules:amd64 1.1.8-3.2ubuntu2.1
go: not found
(client-server-5)mwhudson@anduril:~/src/subiquity$ lxc exec lp1659719-xenial -- apt install -y libpam-modules/xenial-proposed
Reading package lists... Done
Building dependency tree
Reading state information... Done
Selected version '1.1.8-3.2ubuntu2.3' (Ubuntu:16.04/xenial-proposed [amd64]) for 'libpam-modules'
Selected version '1.1.8-3.2ubuntu2.3' (Ubuntu:16.04/xenial-proposed [amd64]) for 'libpam-modules-bin' because of 'libpam-modules'
The following packages were automatically installed and are no longer required:
  libfreetype6 motd-news-config
Use 'apt autoremove' to remove them.
The following additional packages will be installed:
  libpam-modules-bin
Recommended packages:
  update-motd
The following packages will be upgraded:
  libpam-modules libpam-modules-bin
2 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 281 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu xenial-proposed/main amd64 libpam-modules-bin amd64 1.1.8-3.2ubuntu2.3 [36.9 kB]
Get:2 http://archive.ubuntu.com/ubuntu xenial-proposed/main amd64 libpam-modules amd64 1.1.8-3.2ubuntu2.3 [244 kB]
Fetched 281 kB in 2s (123 kB/s)
Preconfiguring packages ...
(Reading database ... 25804 files and directories currently installed.)
Preparing to unpack .../libpam-modules-bin_1.1.8-3.2ubuntu2.3_amd64.deb ...
Unpacking libpam-modules-bin (1.1.8-3.2ubuntu2.3) over (1.1.8-3.2ubuntu2.1) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up libpam-modules-bin (1.1.8-3.2ubuntu2.3) ...
(Reading database ... 25804 files and directories currently installed.)
Preparing to unpack .../libpam-modules_1.1.8-3.2ubuntu2.3_amd64.deb ...
Unpacking libpam-modules:amd64 (1.1.8-3.2ubuntu2.3) over (1.1.8-3.2ubuntu2.1) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up libpam-modules:amd64 (1.1.8-3.2ubuntu2.3) ...
(client-server-5)mwhudson@anduril:~/src/subiquity$ ssh ubuntu@10.187.142.193 "sh -c 'dpkg-query -W libpam-modules; type go '"
libpam-modules:amd64 1.1.8-3.2ubuntu2.3
go is /snap/bin/go