Ubiquity 16.10.1 fails at keyboard setup page

[Iain Lane]

I rebuilt ubiquity to pick up console-setup 1.142ubuntu2. This also happens with ubiquity straight out of the archive (1.142ubuntu1 of console-setup).

I went through an install, selecting all defaults apart from "Erase & Reinstall" instead of "Install alongside" on the partitioning page. I got as far as setting up the keyboard - an error dialog appeared after I clicked to continue with the defaults (for me this was "English (UK)") on the keyboard page. Ubiquity then broke with the attached syslog. I think the important part is

  May 4 15:52:57 ubuntu ubiquity[3881]: switched to page console_setup
  May 4 15:52:57 ubuntu ubiquity[3881]: log-output -t ubiquity setxkbmap -model pc105 -layout gb -option -option lv3:ralt_switch
  May 4 15:52:59 ubuntu ubiquity: Your console font configuration will be updated the next time your system
  May 4 15:52:59 ubuntu ubiquity: boots. If you want to update it now, run 'setupcon' from a virtual console.
  May 4 15:52:59 ubuntu ubiquity: dpkg-maintscript-helper: error: couldn't identify the package

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: ubiquity 16.10.1+laney1 [modified: lib/partman/automatically_partition/question] [origin: unknown]
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CasperVersion: 1.376
CurrentDesktop: Unity
Date: Wed May 4 16:55:10 2016
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash ---
LiveMediaBuild: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160504)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Mathieu Trudel-Lapierre (cyphermox)]

This needs a fix in console-setup to handle the fact we're calling it from ubiquity to setup keyboards early on during the install process.

[Launchpad Janitor (janitor)]

This bug was fixed in the package console-setup - 1.142ubuntu4

---------------
console-setup (1.142ubuntu4) yakkety; urgency=medium

  * debian/keyboard-configuration.postinst: we shouldn't fail if
    dpkg-maintscript-helpers can't figure out the package for removal of
    console-setup and keyboard-setup init scripts -- in ubiquity we won't have
    the outer checked directory /lib/debian-installer.d; and we won't have any
    files to remove on account of likely being a new install. (LP: #1578285)

 -- Mathieu Trudel-Lapierre <email address hidden> Wed, 08 Jun 2016 14:39:12 -0400