portage-ng / portage / dev-ml / dune / 3.20.2
pmerge --pretend --verbose
[ebuild  N     ] dev-lang/ocaml-5.5.1:0/5.5.1::gentoo USE="ocamlopt -emacs -flambda -latex -test -xemacs" 6.3 MiB
[ebuild  N     ] dev-ml/dune-3.20.2:0/3.20.2::gentoo USE="-emacs" 2.9 MiB

Total: 2 packages (2 new), Size of downloads: 9.2 MiB


 * Running sanity checks...

 * resolver plan required 9 ops (0.01 seconds)

Wall time
0.435 s vs. 0.012 s for portage-ng