** Description changed:

  Snappy heavily rely on systemd system session and xenial has systemd by
  default.
+ 
+ [steps to construct systemd-based avila]
+ 
+ 1. flash images built from xenial branch [1] . This should gives a
+ working xenial+upstart avila.
+ 
+ 2. Install systemd-sysv rather than upstart-sysv
+ 2.1. rebuild latest ubuntu-touch package from source [2] with patch [3] 
applied.
+ 2.2 download latest systemd-sysv package [4].
+ 2.3 dpkg -i ubuntu-touch_*.deb systemd-sysv_*.deb
+ 
+ 3. Install android-tools-adbd for systemd
+ 3.1. download prebuilt package [5] or recompile it from source [6] with patch 
[7] applied.
+ 3.2 Install the package from Terminal app because it will break adb 
connection and interrupt the installation process leaving a very bad state of 
the package.
+ 
+ 4. Fix android container
+ 4.1. Install prebuilt package [8] or just correct its systemd service file by 
hand as the merge proposal [9] does.
+ 4.2. fix /etc/mtab entry in /usr/lib/tmpfiles.d/debian.conf by replacing 'L+' 
with 'L'.
+ 
+ 5. Reboot.
+ 
+ [1]: 
https://code.launchpad.net/~avila-private-team/avila-private/+git/platform_manifest/+ref/xenial
+ [2]: 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu/pool/main/u/ubuntu-touch-meta/
+ [3]: 
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1625023/+attachment/4744047/+files/0001-depends-on-systemd-sysv-instead.patch
+ [4]: 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu/pool/main/s/systemd/
+ [5]: 
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1625023/+attachment/4744111/+files/android-tools-adbd_5.1.1r36+git20160322-0ubuntu3.1~overlay1_arm64.deb
+ [6]: 
http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu/pool/main/a/android-tools/
+ [7]: 
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1625023/+attachment/4746154/+files/force-adbd.patch
+ [8]: 
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1625023/+attachment/4746148/+files/lxc-android-config_0.230+16.04.20160728-0ubuntu1_all.deb
+ [9]: 
https://code.launchpad.net/~vicamo/lxc-android-config/fix-systemd-service-startup/+merge/306435

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https://bugs.launchpad.net/bugs/1625023

Title:
  switch to systemd on ubuntu phone xenial

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