portage-ng / portage / dev-tcltk / tkdnd / 2.9.2-r1
pmerge --pretend --verbose
[ebuild  N     ] dev-lang/tk-8.6.17:0/8.6::gentoo USE="threads truetype (-aqua) -debug -test -xscreensaver" 4.4 MiB
[ebuild  N     ] dev-tcltk/tkdnd-2.9.2-r1::gentoo USE="X threads -debug" 560.3 KiB

Total: 2 packages (2 new), Size of downloads: 4.9 MiB


 * Running sanity checks...

 * resolver plan required 21 ops (0.02 seconds)

Wall time
0.442 s vs. 0.023 s for portage-ng