$ sudo add-apt-repository ppa:gwendal-lebihan-dev/cinnamon-stable
You are about to add the following PPA to your system:
This PPA contains the stable releases of cinnamon for Precise, Quantal, Raring and Saucy.
Cinnamon website : http://cinnamon.linuxmint.com/
More info: https://launchpad.net/~gwendal-lebihan-dev/+archive/cinnamon-stable
Press [ENTER] to continue or ctrl-c to cancel adding it
Traceback (most recent call last):
File "/usr/bin/add-apt-repository", line 164, in <module>
sp = SoftwareProperties(options=options)
File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 105, in __init__
self.reload_sourceslist()
File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 593, in reload_sourceslist
self.distro.get_sources(self.sourceslist)
File "/usr/lib/python3/dist-packages/aptsources/distro.py", line 87, in get_sources
raise NoDistroTemplateException("Error: could not find a "
aptsources.distro.NoDistroTemplateException: Error: could not find a distribution template