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-lang/ocaml-5.5.1:0/5.5.1::gentoo  USE="ocamlopt -emacs -flambda -latex -test -xemacs" 6457 KiB
[ebuild  N     ] net-libs/zeromq-4.3.5-r1:0/5::gentoo  USE="libbsd sodium -doc -drafts -static-libs -test -unwind" 2471 KiB
[ebuild  N     ] dev-ml/dune-3.23.1:0/3.23.1::gentoo  USE="-emacs -test" 3624 KiB
[ebuild  N     ] dev-ml/findlib-1.9.8-r1:0/1::gentoo  USE="ocamlopt -doc -tk" 269 KiB
[ebuild  N     ] dev-ml/menhir-20250912:0/20250912::gentoo  USE="ocamlopt" 1251 KiB
[ebuild  N     ] dev-ml/num-1.6-r1::gentoo  USE="ocamlopt" 67 KiB
[ebuild  N     ] dev-ml/yojson-3.0.0:0/3.0.0::gentoo  USE="ocamlopt -examples -test" 56 KiB
[ebuild  N     ] dev-ml/dune-build-info-3.21.1:0/3.21.1::gentoo  USE="ocamlopt" 3352 KiB
[ebuild  N     ] dev-ml/result-1.5:0/1.5::gentoo  USE="ocamlopt" 3 KiB
[ebuild  N     ] dev-ml/csexp-1.5.2-r1:0/1.5.2::gentoo  USE="ocamlopt -test" 12 KiB
[ebuild  N     ] dev-ml/dune-configurator-3.21.1:0/3.21.1::gentoo  USE="ocamlopt" 0 KiB
[ebuild  N     ] dev-ml/zmq-5.3.0:0/5.3.0::gentoo  USE="ocamlopt -test" 35 KiB
[ebuild  N     ] sci-mathematics/kind2-1.9.0:0/1.9.0::gentoo  USE="ocamlopt -test" 1963 KiB

Total: 13 packages (13 new), Size of downloads: 19553 KiB