dephtu@dephtop:~$ sudo apt-get install gnome-compiz-manager compiz \
> compiz-gnome
Reading package lists... Done
Building dependency tree       
Reading state information... Done
gnome-compiz-manager is already the newest version.
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  gnome-compiz-manager: Depends: libgnome-compiz-manager but it is not going to be installed
                        Depends: libgnome-compiz-manager but it is not going to be installed
                        Depends: compiz-freedesktop but it is not going to be installed
                        Depends: compiz-freedesktop-gnome but it is not going to be installed
E: Broken packages