portage-ng / portage / net-analyzer / multipath-tcp-tools / 2018_p12_p21-r1
pmerge --pretend --verbose
pmerge: error: no matching ebuilds: '=net-analyzer/multipath-tcp-tools-2018_p12_p21-r1'

Wall time
0.412 s vs. 0.005 s for portage-ng