$ sudo apt-get install libpulse-dev libdirectfb-dev libaa1-dev libcaca-dev
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:
  libaa1-dev: Depends: libslang2-dev but it is not going to be installed
  libcaca-dev: Depends: libslang2-dev but it is not going to be installed
  libdirectfb-dev: Depends: libfreetype6-dev but it is not going to be installed
                   Depends: libpng12-dev but it is not going to be installed
  libpulse-dev: Depends: libglib2.0-dev but it is not going to be installed
                Depends: libavahi-client-dev but it is not going to be installed
E: Broken packages