portage-ng --merge
>>> Emerging : portage://sys-block/blktrace-1.3.0-r1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-libs/libaio-0.3.113_p8
│ └─ file ─┤ 48.81 Kb libaio-0.3.113.tar.gz
│ │ 24.65 Kb libaio_0.3.113-8.debian.tar.xz
│ download portage://sys-block/blktrace-1.3.0-r1
│ └─ file ─┤ 387.37 Kb blktrace-1.3.0.tar.bz2
└─step 2─┤ install portage://dev-libs/libaio-0.3.113_p8
│ └─ conf ─┤ USE = "-static-libs -test"
└─step 3─┤ run portage://dev-libs/libaio-0.3.113_p8
└─step 4─┤ install portage://sys-block/blktrace-1.3.0-r1
│ └─ conf ─┤ USE = "-doc"
└─step 5─┤ run portage://sys-block/blktrace-1.3.0-r1
Total: 6 actions (2 downloads, 2 installs, 2 runs), grouped into 5 steps.
460.83 Kb to be downloaded.