portage-ng --merge
>>> Emerging : portage://sys-apps/usbredir-0.13.0-r1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-libs/libusb-1.0.30
│ └─ file ─┤ 640.73 Kb libusb-1.0.30.tar.bz2
│ download portage://sys-apps/usbredir-0.13.0-r1
│ └─ file ─┤ 67.22 Kb usbredir-usbredir-0.13.0.tar.bz2
└─step 2─┤ install portage://dev-libs/libusb-1.0.30
│ └─ conf ─┤ USE = "-debug -doc -examples -static-libs -test -udev -verify-sig"
│ │ SLOT = "1"
└─step 3─┤ run portage://dev-libs/libusb-1.0.30
└─step 4─┤ install portage://virtual/libusb-1-r2
│ └─ conf ─┤ USE = "-udev"
│ │ SLOT = "1"
└─step 5─┤ run portage://virtual/libusb-1-r2
└─step 6─┤ install portage://sys-apps/usbredir-0.13.0-r1
│ └─ conf ─┤ USE = "-test"
└─step 7─┤ run portage://sys-apps/usbredir-0.13.0-r1
Total: 8 actions (2 downloads, 3 installs, 3 runs), grouped into 7 steps.
707.96 Kb to be downloaded.