portage-ng / portage / app-admin / eselect / 1.4.32
emerge -vp

These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.52 s (backtrack: 0/20).

[ebuild     U  ] app-admin/eselect-1.4.32::gentoo [1.4.31::gentoo] USE="-doc -emacs -vim-syntax" 185 KiB

Total: 1 package (1 upgrade), Size of downloads: 185 KiB

Wall time
2.541 s vs. 0.006 s for portage-ng