portage-ng --fetchonly
>>> Emerging : portage://dev-ml/opam-file-format-2.1.3:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-lang/ocaml-5.5.1
│ └─ file ─┤ 6.30 Mb ocaml-5.5.1.tar.gz
│ download portage://dev-ml/dune-3.23.1
│ └─ file ─┤ 3.54 Mb dune-3.23.1.tar.gz
│ download portage://dev-ml/opam-file-format-2.1.3
│ └─ file ─┤ 35.41 Kb opam-file-format-2.1.3.tar.gz
Total: 3 actions (3 downloads), grouped into 1 step.
9.88 Mb to be downloaded.