Created attachment 412712 [details, diff] Change dependencies to accept nvidia-drivers with tools USE flag If the gl USE flag is set, sys-apps/hwloc (all versions) depend on nvidia-settings only, which became obsolete with the tools USE flag on never nvidia-drivers. Attached is a patch that changes the dependencies to accept both nvidia-settings and nvidia-drivers[tools]. The same applies to conky, see bug 56126. You can test the patched ebuild from my overlay "seden" via layman.
Oh dear. The conky bug is bug 561268 of course.
Just a note: The ebuild currently fails, because the configure script looks for a header which does no longer exist with nvidia-drivers.
hwloc depends on NVCtrl/NVCtrl.h, which is only included in nvidia-settings, but not in the nvidia-drivers package. This is bad.
The newer nvidia-settings packages have been added to portage. This fixes the issue.