portage-ng --merge
>>> Emerging : portage://sci-astronomy/wcslib-8.3-r1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sci-astronomy/wcslib-8.3-r1
│ └─ file ─┤ 3.09 Mb wcslib-8.3.tar.bz2
└─step 2─┤ install portage://sci-astronomy/wcslib-8.3-r1
│ └─ conf ─┤ USE = "tools -doc -fits -fortran -pgplot -static-libs"
│ │ SLOT = "0/8"
└─step 3─┤ run portage://sci-astronomy/wcslib-8.3-r1
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
3.09 Mb to be downloaded.