I've managed to boil this down to a simple test case by installing virt-viewer and nvidia-libopencl1-304 on an Ubuntu 17.04 desktop system the upgrade will fail to be calculable.
I've managed to boil this down to a simple test case by installing virt-viewer and nvidia- libopencl1- 304 on an Ubuntu 17.04 desktop system the upgrade will fail to be calculable.