Ubiquity in 18.04.2 does not install nvidia driver when requested to do so

[Alan Pope 🍺🐧🐱 🦄]

Installed 18.04.2 on a laptop with nvidia GTX 960.
I enabled wireless network and ticked the box to install 3rd party proprietary stuff.
Rebooted to the installed system and found no nvidia driver installed.

Found this in the installer/syslog (full syslog attached)

Apr 10 16:44:54 ubuntu ubiquity: The following packages have unmet dependencies:
Apr 10 16:44:54 ubuntu ubiquity: nvidia-driver-390 : Depends: xserver-xorg-video-nvidia-390 (= 390.77-0ubuntu0.18.04.1) but it is not going to be installed
Apr 10 16:44:54 ubuntu ubiquity: Recommends: libnvidia-compute-390:i386 (= 390.77-0ubuntu0.18.04.1) but it is not installable
Apr 10 16:44:54 ubuntu ubiquity: Recommends: libnvidia-decode-390:i386 (= 390.77-0ubuntu0.18.04.1) but it is not installable
Apr 10 16:44:54 ubuntu ubiquity: Recommends: libnvidia-encode-390:i386 (= 390.77-0ubuntu0.18.04.1) but it is not installable
Apr 10 16:44:54 ubuntu ubiquity: Recommends: libnvidia-ifr1-390:i386 (= 390.77-0ubuntu0.18.04.1) but it is not installable
Apr 10 16:44:54 ubuntu ubiquity: Recommends: libnvidia-fbc1-390:i386 (= 390.77-0ubuntu0.18.04.1) but it is not installable
Apr 10 16:44:54 ubuntu ubiquity: Recommends: libnvidia-gl-390:i386 (= 390.77-0ubuntu0.18.04.1) but it is not installable
Apr 10 16:44:54 ubuntu ubiquity: E
Apr 10 16:44:54 ubuntu ubiquity: : Unable to correct problems, you have held broken packages.
Apr 10 16:44:54 ubuntu ubiquity: ubuntu-drivers autoinstall failed with code: 100

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 4.18.0-17.18~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-17-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Apr 10 18:01:03 2019
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd quiet splash --- keyboard-configuration/layoutcode=gb
InstallationDate: Installed on 2019-04-10 (0 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Will Cooke (willcooke)]

This is probably a packaging problem on the nvidia drivers rather than a bug in Ubiquiuty. Moving there for more ideas.