Preparing to unpack .../boinc-manager_7.4.23+dfsg-2_amd64.deb ...
Unpacking boinc-manager (7.4.23+dfsg-2) ...
Processing triggers for gnome-menus (3.10.1-0ubuntu5) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu3) ...
Processing triggers for bamfdaemon (0.5.1+15.04.20150202-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.58ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.14-0ubuntu1) ...
Processing triggers for man-db (2.7.0.2-5) ...
dpkg: error processing package boinc-client (--configure):
 package boinc-client is not ready for configuration
 cannot configure (current status `half-installed')
dpkg: dependency problems prevent configuration of boinc-manager:
 boinc-manager depends on boinc-client; however:
  Package boinc-client is not installed.

dpkg: error processing package boinc-manager (--configure):
 dependency problems - leaving unconfigured