Xenial overlay PPA: unity8-desktop-session deps conflict with kubuntu-desktop install deps

[Andrea Bernabei]

Environment:
Xenial + Overlay PPA, all packages updated as of 14th Sept 2016

Description:
Team's machine.
It had unity8-desktop-session installed, I tried installing kubuntu-desktop but that failed.

1) Installed kubuntu-desktop and that removed unity8-desktop-session (I did not notice that in the long list of modifications to packages so I let it go on)

2) Tried getting unity8-desktop-session back and had 2 problems:

a) unity-scope-click depends packagekit ---> packagekit can't be installed because python3-aptdaemon.pkcompat Conflicts: packagekit ---> I can't remove python3-aptdaemon.pkcompat because "packagekit-tools Depends: python3-aptdaemon.pkcompat OR packagekit-system-interface OR packagekit"

b) /usr/share/accounts/services/google-im.service is owned by both kde-config-telepathy-accounts and accounts-plugin-google which is required by unity-scope-gdrive

I fixed this by "apt remove unity-scope-gdrive account-plugin-google kde-telepathy-minimal kde-telepathy" otherwise kubuntu-desktop installation would not even complete

After fixing b it let me install unity8-desktop-session warning me that it was uninstalling python3-aptdaemon.pkcompat even though packagekit-tools depends on it