Since Elementary OS is a Ubuntu based distribution I think it should be fairly easy to install a stable version of Pantheon on Ubuntu (in my case 14.04). I have seen that many people have tried and there are lots of solutions but almost all of them are outdated or suggest pulling a unstable version of Pantheon from the test repository of Elementary.
I tried the following, but it does not work. (resource here)
$ sudo add-apt-repository ppa:elementary-os/stable $ sudo apt-get update $ sudo apt-get install elementary-desktop
However the above leads to a disaster. Somehow Pantheon installs over Unity and the result is a strange mixture between them - The unity launcher with the Pantheon icon pack and font. Of course I tried to log out in order to select the Pantheon shell but it was missing from the list with desktop environments (a system restart did not help as well). Luckily I managed to delete Pantheon and now everything is back to normal but I would like to be able to run it.
TL;DR Is there a way to install a stable version of Pantheon as a separate desktop environment on Ubuntu 14.04?