portage-ng --merge
>>> Emerging : portage://media-libs/libdc1394-2.2.6: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://media-libs/libdc1394-2.2.6
│ └─ file ─┤ 597.72 Kb libdc1394-2.2.6.tar.gz
│ │ 2.36 Kb sdl.m4-20140620.tar.xz
│ download portage://sys-libs/libraw1394-2.1.2-r1
│ └─ file ─┤ 305.78 Kb libraw1394-2.1.2.tar.xz
└─step 2─┤ install portage://sys-libs/libraw1394-2.1.2-r1
│ └─ conf ─┤ USE = "-valgrind"
│ 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
│ run portage://sys-libs/libraw1394-2.1.2-r1
└─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://media-libs/libdc1394-2.2.6
│ └─ conf ─┤ USE = "-doc -static-libs"
│ │ SLOT = "2/25"
└─step 7─┤ run portage://media-libs/libdc1394-2.2.6
Total: 11 actions (3 downloads, 4 installs, 4 runs), grouped into 7 steps.
1.51 Mb to be downloaded.