portage-ng / portage / dev-ml / camlp4 / 5.3_p1
pmerge --pretend --verbose
[ebuild  N     ] dev-lang/ocaml-5.3.0-r1:0/5.3.0::gentoo USE="ocamlopt -emacs -flambda -latex -test -xemacs" 6.0 MiB
[ebuild  N     ] dev-ml/dune-3.23.1:0/3.23.1::gentoo USE="-emacs -test" 3.5 MiB
[ebuild  N     ] dev-ml/camlp-streams-5.0.1::gentoo USE="ocamlopt" 17.0 KiB
[ebuild  N     ] dev-ml/findlib-1.9.8-r1:0/1::gentoo USE="ocamlopt -doc -tk" 268.2 KiB
[ebuild  N     ] dev-ml/ocamlbuild-0.16.1:0/0.16.1::gentoo USE="ocamlopt" 197.7 KiB
[ebuild  N     ] dev-ml/camlp4-5.3_p1:0/5.3_p1::gentoo USE="ocamlopt" 638.3 KiB

Total: 6 packages (6 new), Size of downloads: 10.6 MiB


 * Running sanity checks...

 * resolver plan required 26 ops (0.02 seconds)

Wall time
0.446 s vs. 0.055 s for portage-ng