The packages of Enlightenment Window Manager located in SparkyLinux repository can be installed on Sparky and Debian 'testing'/'unstable' “Sid” installations. It is not compatible with Debian 'stable' so can't be installed on it. Never tried to install on Ubuntu based Linux distributions, but some guys provide PPA repository for *buntu systems.
sudo apt-get update sudo apt-get install enlightenment
The 'enlightenment' package installs a 'polkit' back end such as:
policykit-1-gnome polkit-kde-agent-1 mate-polkit lxqt-policykit lxsession (provides lxpolkit)
Make sure that your Enlightenment installation enabled one of the above tools at the start up.
To do it manually, go to Settings→ Apps→ Startup Applications. Find one of the tools on “System” or “Applications” list and add it to the startup (check in “Order” tab after).
The second way to do so is edition (or creating if doesn't exist) a file:
Then add a '.desktop' file of the above tools, 'polkit' for example: