portage-ng --merge
>>> Emerging : portage://sci-libs/liborigin-3.0.1_p20210828-r1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-cpp/tree-3.18-r1
│ └─ file ─┤ 1.12 Mb tree-3.18.tar.gz
│ download portage://sci-libs/liborigin-3.0.1_p20210828-r1
│ └─ file ─┤ 152.77 Kb liborigin-3.0.1_p20210828.tar.gz
└─step 2─┤ install portage://dev-cpp/tree-3.18-r1
│ └─ conf ─┤ USE = "-doc"
└─step 3─┤ run portage://dev-cpp/tree-3.18-r1
└─step 4─┤ install portage://sci-libs/liborigin-3.0.1_p20210828-r1
│ └─ conf ─┤ USE = "-debug -doc -tools"
│ │ SLOT = "2"
└─step 5─┤ run portage://sci-libs/liborigin-3.0.1_p20210828-r1
Total: 6 actions (2 downloads, 2 installs, 2 runs), grouped into 5 steps.
1.27 Mb to be downloaded.