$ sudo apt install unity8-autopilot
[sudo] password for phablet: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 unity8-autopilot : Depends: ubuntu-ui-toolkit-autopilot (>= 1.2.1485+15.04.20150417.1-0ubuntu1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

===================

phablet@ubuntu-phablet:~$ sudo apt install unity8-autopilot ubuntu-ui-toolkit-autopilot ubuntu-ui-toolkit-examples=1.3.1688+15.10.20151018.1-0ubuntu1 qtdeclarative5-ubuntu-ui-toolkit-plugin=1.3.1688+15.10.20151018.1-0ubuntu1 ubuntu-ui-toolkit-theme=1.3.1688+15.10.20151018
.1-0ubuntu1
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  autopilot-qt4 autopilot-qt5 binutils dpkg-dev gir1.2-gdkpixbuf-2.0 gir1.2-notify-0.7 libaudio2 libautopilot-qt libfontenc1 libgl1-mesa-glx libjs-jquery libjs-underscore liblttng-ctl0 libmng2 libqt4-dbus libqt4-declarative libqt4-network libqt4-script libqt4-sql
  libqt4-xml libqt4-xmlpatterns libqt5quicktest5 libqtcore4 libqtdbus4 libqtgui4 libwebp5 libwebpmux1 libxaw7 libxcb-dri3-0 libxcb-glx0 libxcb-present0 libxfont1 libxkbfile1 libxmu6 libxmuu1 libxpathselect1.4v5 libxpm4 libxshmfence1 libxt6 libxxf86vm1 lttng-tools make
  ofono-phonesim patch python3-autopilot python3-autopilot-trace python3-babeltrace python3-dateutil python3-decorator python3-evdev python3-extras python3-fixtures python3-junitxml python3-linecache2 python3-mimeparse python3-pbr python3-pil python3-psutil
  python3-subunit python3-testscenarios python3-testtools python3-traceback2 python3-unittest2 qdbus qml-module-qttest qtcore4-l10n qttestability-autopilot ubuntu-app-launch-profiler ubuntu-keyboard-autopilot ubuntu-keyboard-tests ubuntu-ui-toolkit-tools unity8-fake-env
  url-dispatcher-tools x11-xkb-utils xauth xserver-common xvfb
Suggested packages:
  binutils-doc debian-keyring nas javascript-common libqt4-declarative-folderlistmodel libqt4-declarative-gestures libqt4-declarative-particles libqt4-declarative-shaders qt4-qmlviewer libqt4-dev libicu52 qt4-qtconfig lttng-modules-dkms make-doc ed diffutils-doc
  python-pil-doc python3-pil-dbg python-psutil-doc python-testtools-doc
Recommended packages:
  gcc c-compiler build-essential fakeroot libalgorithm-merge-perl libqt4-sql-mysql libqt4-sql-odbc libqt4-sql-psql libqt4-sql-sqlite babeltrace gir1.2-gconf-2.0 gir1.2-gtk-3.0 gir1.2-ibus-1.0 libautopilot-gtk python3-xlib recordmydesktop ubuntu-ui-toolkit-doc
  xfonts-base
The following NEW packages will be installed:
  autopilot-qt4 autopilot-qt5 binutils dpkg-dev gir1.2-gdkpixbuf-2.0 gir1.2-notify-0.7 libaudio2 libautopilot-qt libfontenc1 libgl1-mesa-glx libjs-jquery libjs-underscore liblttng-ctl0 libmng2 libqt4-dbus libqt4-declarative libqt4-network libqt4-script libqt4-sql
  libqt4-xml libqt4-xmlpatterns libqt5quicktest5 libqtcore4 libqtdbus4 libqtgui4 libwebp5 libwebpmux1 libxaw7 libxcb-dri3-0 libxcb-glx0 libxcb-present0 libxfont1 libxkbfile1 libxmu6 libxmuu1 libxpathselect1.4v5 libxpm4 libxshmfence1 libxt6 libxxf86vm1 lttng-tools make
  ofono-phonesim patch python3-autopilot python3-autopilot-trace python3-babeltrace python3-dateutil python3-decorator python3-evdev python3-extras python3-fixtures python3-junitxml python3-linecache2 python3-mimeparse python3-pbr python3-pil python3-psutil
  python3-subunit python3-testscenarios python3-testtools python3-traceback2 python3-unittest2 qdbus qml-module-qttest qtcore4-l10n qttestability-autopilot ubuntu-app-launch-profiler ubuntu-keyboard-autopilot ubuntu-keyboard-tests ubuntu-ui-toolkit-autopilot
  ubuntu-ui-toolkit-examples ubuntu-ui-toolkit-tools unity8-autopilot unity8-fake-env url-dispatcher-tools x11-xkb-utils xauth xserver-common xvfb
The following packages will be upgraded:
  qtdeclarative5-ubuntu-ui-toolkit-plugin ubuntu-ui-toolkit-theme
2 upgraded, 80 newly installed, 0 to remove and 0 not upgraded.
Need to get 18,5 MB of archives.
After this operation, 61,2 MB of additional disk space will be used.
Do you want to continue? [Y/n]