portage-ng --merge
>>> Emerging : portage://sci-biology/mrbayes-3.2.7:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sci-biology/mrbayes-3.2.7
│ └─ file ─┤ 9.33 Mb mrbayes-3.2.7.tar.gz
└─step 2─┤ install portage://sci-biology/mrbayes-3.2.7
│ └─ conf ─┤ USE = "readline -debug -mpi"
└─step 3─┤ run portage://sci-biology/mrbayes-3.2.7
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
9.33 Mb to be downloaded.