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

Calculating dependencies ... done!
Dependency resolution took 1.06 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     ] 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/ocamlbuild-0.16.1:0/0.16.1::gentoo  USE="ocamlopt" 198 KiB
[ebuild  N     ] dev-ml/stdlib-shims-0.3.0::gentoo  USE="ocamlopt" 10 KiB
[ebuild  N     ] dev-ml/result-1.5:0/1.5::gentoo  USE="ocamlopt" 3 KiB
[ebuild  N     ] dev-ml/re-1.14.0:0/1.14.0::gentoo  USE="ocamlopt -test" 109 KiB
[ebuild  N     ] dev-ml/swhid_core-0.1::gentoo  USE="ocamlopt" 46 KiB
[ebuild  N     ] dev-ml/menhir-20250912:0/20250912::gentoo  USE="ocamlopt" 1251 KiB
[ebuild  N     ] dev-ml/patch-3.1.2:0/3.1.2::gentoo  USE="ocamlopt -test" 30 KiB
[ebuild  N     ] dev-ml/topkg-1.1.1:0/1.1.1::gentoo  USE="ocamlopt" 119 KiB
[ebuild  N     ] dev-ml/uchar-0.0.2-r1:0/0.0.2::gentoo  USE="ocamlopt" 22 KiB
[ebuild  N     ] dev-ml/ocaml-sha-1.15.4:0/1.15.4::gentoo  USE="ocamlopt -test" 18 KiB
[ebuild  N     ] dev-ml/opam-file-format-2.2.0-r1:0/2.2.0::gentoo  USE="ocamlopt -test" 32 KiB
[ebuild  N     ] dev-ml/csexp-1.5.2-r1:0/1.5.2::gentoo  USE="ocamlopt -test" 12 KiB
[ebuild  N     ] dev-ml/cmdliner-2.1.0:0/2.1.0::gentoo  USE="ocamlopt" 96 KiB
[ebuild  N     ] dev-ml/dune-configurator-3.21.1:0/3.21.1::gentoo  USE="ocamlopt" 3352 KiB
[ebuild  N     ] dev-ml/uutf-1.0.4-r1:0/1.0.4::gentoo  USE="ocamlopt -doc" 23 KiB
[ebuild  N     ] dev-ml/graphics-5.2.0-r1::gentoo  USE="ocamlopt" 65 KiB
[ebuild  N     ] dev-ml/jsonm-1.0.2:0/1.0.2::gentoo  USE="ocamlopt" 22 KiB
[ebuild  N     ] dev-ml/ocamlgraph-2.2.0:0/2.2.0::gentoo  USE="ocamlopt" 311 KiB
[ebuild  N     ] dev-ml/opam-common-2.5.2:0/2.5.2::gentoo  USE="ocamlopt" 1254 KiB
[ebuild  N     ] dev-ml/opam-installer-2.5.2:0/2.5.2::gentoo  USE="ocamlopt" 0 KiB
[ebuild  N     ] dev-ml/xmlm-1.4.0::gentoo  26 KiB

Total: 24 packages (24 new), Size of downloads: 17337 KiB