portage-ng --merge
>>> Emerging : portage://app-doc/python-docs-2.7.18:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://app-doc/python-docs-2.7.18
│ └─ file ─┤ 4.42 Mb python-2.7.18-docs-html.tar.bz2
└─step 2─┤ install portage://app-doc/python-docs-2.7.18
│ └─ conf ─┤ SLOT = "2.7"
└─step 3─┤ run portage://app-doc/python-docs-2.7.18
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
4.42 Mb to be downloaded.