portage-ng --merge
>>> Emerging : portage://media-video/mjpegtools-2.2.1-r2:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://media-video/mjpegtools-2.2.1-r2
│ └─ file ─┤ 2.22 Mb mjpegtools-2.2.1.tar.gz
└─step 2─┤ install portage://media-video/mjpegtools-2.2.1-r2
│ └─ conf ─┤ USE = "png* -dv -gtk -quicktime -sdl -sdlgfx -static-libs"
│ │ CPU_FLAGS_X86 = "mmx*"
│ │ SLOT = "1/2.2"
└─step 3─┤ run portage://media-video/mjpegtools-2.2.1-r2
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
2.22 Mb to be downloaded.