portage-ng --merge
>>> Emerging : portage://x11-themes/fedora-backgrounds-29.1.3:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://x11-themes/fedora-backgrounds-29.1.3
│ └─ file ─┤ 162.25 Mb f29-backgrounds-29.1.3.tar.xz
└─step 2─┤ install portage://x11-themes/fedora-backgrounds-29.1.3
│ └─ conf ─┤ SLOT = "29"
└─step 3─┤ run portage://x11-themes/fedora-backgrounds-29.1.3
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
162.25 Mb to be downloaded.