portage-ng / portage / media-gfx / brscan5 / 1.6.2.0-r1
pmerge --pretend --verbose
pmerge: error: no matching ebuilds: '=media-gfx/brscan5-1.6.2.0-r1'

Wall time
0.408 s vs. 1.036 s for portage-ng