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

Calculating dependencies ... done!
Dependency resolution took 1.07 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/ocaml-base64-3.5.2:0/3.5.2::gentoo  USE="ocamlopt -test" 19 KiB
[ebuild  N     ] dev-ml/re-1.14.0:0/1.14.0::gentoo  USE="ocamlopt -test" 109 KiB
[ebuild  N     ] dev-ml/stdlib-shims-0.3.0::gentoo  USE="ocamlopt" 10 KiB
[ebuild  N     ] dev-ml/ocaml-expat-1.3.0:0/1.3.0::gentoo  USE="ocamlopt -doc -test" 57 KiB
[ebuild  N     ] dev-ml/xml-light-2.5:0/2.5::gentoo  USE="ocamlopt" 18 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/cppo-1.8.0:0/1.8.0::gentoo  USE="ocamlopt" 43 KiB
[ebuild  N     ] dev-ml/extlib-1.8.0:0/1.8.0::gentoo  USE="ocamlopt -doc" 89 KiB
[ebuild  N     ] dev-ml/dune-configurator-3.21.1:0/3.21.1::gentoo  USE="ocamlopt" 3352 KiB
[ebuild  N     ] dev-ml/cudf-0.10-r1:0/0.10::gentoo  USE="ocamlopt -llvm-libunwind -test" 47 KiB
[ebuild  N     ] dev-ml/parmap-1.2.5:0/1.2.5::gentoo  USE="ocamlopt" 48 KiB
[ebuild  N     ] dev-ml/graphics-5.2.0-r1::gentoo  USE="ocamlopt" 65 KiB
[ebuild  N     ] dev-ml/ocamlgraph-2.2.0:0/2.2.0::gentoo  USE="ocamlopt" 311 KiB
[ebuild  N     ] dev-ml/dose3-7.0.0-r2:0/7.0.0::gentoo  USE="ocamlopt" 1350 KiB

Total: 19 packages (19 new), Size of downloads: 16072 KiB