portage-ng --merge
>>> Emerging : portage://sci-astronomy/wcstools-3.9.5-r1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sci-astronomy/wcstools-3.9.5-r1
│ └─ file ─┤ 8.14 Mb wcstools-3.9.5.tar.gz
└─step 2─┤ install portage://sci-astronomy/wcstools-3.9.5-r1
└─step 3─┤ run portage://sci-astronomy/wcstools-3.9.5-r1
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
8.14 Mb to be downloaded.