portage-ng / portage / virtual / service-manager / 2
pmerge --pretend --verbose
[ebuild   R    ] virtual/service-manager-2::gentoo USE="(-systemd)"

Total: 1 package (1 reinstall)


 * Running sanity checks...

 * resolver plan required 4 ops (0.00 seconds)

Wall time
0.426 s vs. 0.001 s for portage-ng