portage-ng --merge
>>> Emerging : portage://dev-debug/strace-7.2:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-debug/strace-7.2
│ └─ file ─┤ 2.68 Mb strace-7.2.tar.xz
│ 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
└─step 2─┤ install portage://dev-libs/libaio-0.3.113_p8
│ └─ conf ─┤ USE = "-static-libs -test"
└─step 3─┤ install portage://dev-debug/strace-7.2
│ └─ conf ─┤ USE = "aio* ncurses -elfutils -perl -static -test -unwind -verify-sig"
└─step 4─┤ run portage://dev-debug/strace-7.2
Total: 5 actions (2 downloads, 2 installs, 1 run), grouped into 4 steps.
2.75 Mb to be downloaded.