portage-ng / portage / sys-kernel / raspberrypi-sources / 6.18.46_p20260824-r1
pmerge --pretend --verbose
pmerge: error: no matching ebuilds: '=sys-kernel/raspberrypi-sources-6.18.46_p20260824-r1'

Wall time
0.411 s vs. 0.016 s for portage-ng