portage-ng / portage / dev-lisp / ecl / 24.5.10-r1
emerge -vp

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

Calculating dependencies ... done!
Dependency resolution took 1.05 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libatomic_ops-7.10.0::gentoo  531 KiB
[ebuild  N     ] dev-perl/Text-Unidecode-1.300.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 135 KiB
[ebuild  N     ] dev-libs/boehm-gc-8.2.12::gentoo  USE="large threads -cxx -static-libs" 1204 KiB
[ebuild  N     ] dev-perl/libintl-perl-1.370.0::gentoo  USE="-examples -minimal -test" PERL_FEATURES="ithreads (-debug) -quadmath" 571 KiB
[ebuild  N     ] dev-perl/Unicode-EastAsianWidth-12.0.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 52 KiB
[ebuild  N     ] app-text/texi2html-5.0-r1::gentoo  USE="unicode" 15037 KiB
[ebuild  N     ] dev-lisp/asdf-3.3.5-r1:0/3.3.5-r1::gentoo  USE="-doc -test" 509 KiB
[ebuild  N     ] dev-lisp/uiop-3.3.5::gentoo  102 KiB
[ebuild  N     ] dev-lisp/ecl-24.5.10-r1:0/24.5.10::gentoo  USE="X threads unicode -cxx -debug -emacs -gengc -precisegc" CPU_FLAGS_X86="sse" 7940 KiB
[ebuild  N     ] virtual/commonlisp-0-r1::gentoo  0 KiB

Total: 10 packages (10 new), Size of downloads: 26076 KiB

Wall time
2.024 s vs. 0.079 s for portage-ng