portage-ng / portage / sci-physics / hepmc / 2.06.11-r1
pmerge --pretend --verbose
[ebuild  N     ] sci-physics/hepmc-2.06.11-r1:2::gentoo USE="-cm -doc -examples -gev -test" 4.7 MiB

Total: 1 package (1 new), Size of downloads: 4.7 MiB


 * Running sanity checks...

 * resolver plan required 4 ops (0.01 seconds)

Wall time
0.432 s vs. 0.008 s for portage-ng