portage-ng / portage / app-crypt / rhash / 1.4.6-r1
emerge -vp

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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild   R    ] app-crypt/rhash-1.4.6-r1:0/1::gentoo  USE="nls ssl -debug -static-libs" CPU_FLAGS_X86="-sha" 451 KiB

Total: 1 package (1 reinstall), Size of downloads: 451 KiB

Wall time
1.997 s vs. 0.003 s for portage-ng