portage-ng --merge
>>> Emerging : portage://virtual/szip-2.1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sci-libs/libaec-1.1.4
│ └─ file ─┤ 2.21 Mb libaec-v1.1.4.tar.bz2
└─step 2─┤ install portage://sci-libs/libaec-1.1.4
│ └─ conf ─┤ USE = "szip -test"
│ │ SLOT = "0/2"
└─step 3─┤ run portage://sci-libs/libaec-1.1.4
└─step 4─┤ install portage://virtual/szip-2.1
│ └─ conf ─┤ SLOT = "0/2"
└─step 5─┤ run portage://virtual/szip-2.1
Total: 5 actions (1 download, 2 installs, 2 runs), grouped into 5 steps.
2.21 Mb to be downloaded.