Unfortunately avahi can't be removed without also removing emacs

src/freedombone

   fi
   # only enable avahi if we're doing mesh networking
   if [[ $ENABLE_BABEL != "yes" && $ENABLE_BATMAN != "yes" && $ENABLE_CJDNS != "yes" ]]; then
-      # Ensure that avahi is not installed. We only need it for mesh networking
-      # Where there is no conventional DNS resolution
-      apt-get -y remove avahi-*
       return
   fi
   apt-get -y install avahi-utils avahi-autoipd avahi-dnsconfd