$ sudo apt-get install avant-window-navigator-bzr awn-core-applets-bzr
Reading package lists... Done
Building dependency tree       
Reading state information... Done
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:
  avant-window-navigator-bzr: Depends: libawn-bzr but it is not going to be installed
                              Depends: libpango1.0-0 (>= 1.18.3) but 1.18.2-0ubuntu1 is to be installed
                              Depends: libawn-bzr (= 0.2.0-bzr151-1) but it is not going to be installed
  awn-core-applets-bzr: Depends: libawn-bzr but it is not going to be installed
                        Depends: libpango1.0-0 (>= 1.18.3) but 1.18.2-0ubuntu1 is to be installed
                        Depends: libawn-bzr but it is not going to be installed
                        Depends: python-libawn-bzr but it is not going to be installed
E: Broken packages