portage-ng --merge
>>> Emerging : portage://sci-physics/xfoil-6.99-r1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sci-physics/xfoil-6.99-r1
│ └─ file ─┤ 4.31 Mb xfoil6.99.tgz
└─step 2─┤ install portage://virtual/fortran-0-r1
│ └─ conf ─┤ USE = "openmp"
└─step 3─┤ run portage://virtual/fortran-0-r1
└─step 4─┤ install portage://sci-physics/xfoil-6.99-r1
│ └─ conf ─┤ USE = "-doc -examples"
└─step 5─┤ run portage://sci-physics/xfoil-6.99-r1
Total: 5 actions (1 download, 2 installs, 2 runs), grouped into 5 steps.
4.31 Mb to be downloaded.