root@tirion:~# LANG=C apt purge libcuda1-352 nvidia-opencl-icd-352
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  libcuda1-352* nvidia-opencl-icd-352*
0 upgraded, 0 newly installed, 2 to remove and 1 not upgraded.
After this operation, 43,0 kB disk space will be freed.
Do you want to continue? [Y/n] 
(Reading database ... 291301 files and directories currently installed.)
Removing libcuda1-352 (361.45.11-0ubuntu0.16.04.1) ...
Failed to stop var-lib-snapd-lib-gl.mount: Unit var-lib-snapd-lib-gl.mount not loaded.
dpkg: error processing package libcuda1-352 (--remove):
 subprocess installed pre-removal script returned error exit status 5
Failed to get unit file state for var-lib-snapd-lib-gl.mount: No such file or directory
var-lib-snapd-lib-gl.mount is a disabled or a static unit, not starting it.
Removing nvidia-opencl-icd-352 (361.45.11-0ubuntu0.16.04.1) ...
Failed to stop var-lib-snapd-lib-gl.mount: Unit var-lib-snapd-lib-gl.mount not loaded.
dpkg: error processing package nvidia-opencl-icd-352 (--remove):
 subprocess installed pre-removal script returned error exit status 5
Failed to get unit file state for var-lib-snapd-lib-gl.mount: No such file or directory
var-lib-snapd-lib-gl.mount is a disabled or a static unit, not starting it.
Errors were encountered while processing:
 libcuda1-352
 nvidia-opencl-icd-352
E: Sub-process /usr/bin/dpkg returned an error code (1)