Unpacking nvidia-glx-legacy (from .../nvidia-glx-legacy_1.0.7174-4_i386.deb) ...
dpkg-divert: `diversion of /usr/lib/libGL.so.1 to /usr/lib/nvidia/libGL.so.1.xlibmesa by nvidia-glx-legacy' clashes with `diversion of /usr/lib/libGL.so.1 to /usr/lib/nvidia/libGL.so.1.xlibmesa by nvidia-glx'
dpkg: error processing /var/cache/apt/archives/nvidia-glx-legacy_1.0.7174-4_i386.deb (--unpack):
 subprocess pre-installation script returned error exit status 2