Preparing to unpack .../unity-tweak-tool_0.0.6ubuntu3_all.deb ...
Unpacking unity-tweak-tool (0.0.6ubuntu3) ...
Processing triggers for gnome-icon-theme (3.12.0-1ubuntu2) ...
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Processing triggers for bamfdaemon (0.5.2~bzr0+15.10.20150627.1-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.58ubuntu1) ...
dpkg: error processing package libmirclient-dev:amd64 (--configure):
 package libmirclient-dev:amd64 is already installed and configured
dpkg: error processing package libwayland-dev (--configure):
 package libwayland-dev is already installed and configured