portage-ng --merge
>>> Emerging : portage://sci-mathematics/pari-2.15.5:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sci-mathematics/pari-2.15.5
│ └─ file ─┤ 4.95 Mb pari-2.15.5.tar.gz
└─step 2─┤ install portage://sci-mathematics/pari-2.15.5
│ └─ conf ─┤ USE = "X* gmp* threads* -data -doc -examples -fltk -test"
│ │ SLOT = "0/8"
└─step 3─┤ run portage://sci-mathematics/pari-2.15.5
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
4.95 Mb to be downloaded.