The 169.09 ebuild recently added to portage is just a version bump. It ignores
new features present in the driver for CUDA applications. Bug #199671 has a few
comments to this effect, in particular
http://bugs.gentoo.org/show_bug.cgi?id=199671#c4
Namely, libcuda.so must be installed as well as a couple header files.
Reproducible: Always
Steps to Reproduce:
1. emerge nvidia-drivers
2. ls /usr/lib/libcuda.so
3. ls /usr/include/*cuda*
Actual Results:
No such file or directory
Expected Results:
/usr/lib/libcuda.so
cuda.h cudaGL.h