portage-ng --merge
>>> Emerging : portage://net-libs/libtorrent-0.15.7:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://net-libs/libtorrent-0.15.7
│ └─ file ─┤ 851.93 Kb libtorrent-0.15.7.tar.gz
│ download portage://net-libs/udns-0.6
│ └─ file ─┤ 83.13 Kb udns-0.6.tar.gz
└─step 2─┤ install portage://net-libs/udns-0.6
│ └─ conf ─┤ USE = "ipv6 tools"
└─step 3─┤ run portage://net-libs/udns-0.6
└─step 4─┤ install portage://net-libs/libtorrent-0.15.7
│ └─ conf ─┤ USE = "-debug -test"
└─step 5─┤ run portage://net-libs/libtorrent-0.15.7
Total: 6 actions (2 downloads, 2 installs, 2 runs), grouped into 5 steps.
935.07 Kb to be downloaded.