portage-ng / portage / dev-perl / local-lib / 2.0.29-r1
emerge -vp

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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/local-lib-2.0.29-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 63 KiB

Total: 1 package (1 new), Size of downloads: 63 KiB

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