portage-ng --merge
>>> Emerging : portage://app-benchmarks/stress-ng-0.22.01:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://app-benchmarks/stress-ng-0.22.01
│ └─ file ─┤ 8.17 Mb stress-ng-0.22.01.tar.gz
│ 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─┤ run portage://dev-libs/libaio-0.3.113_p8
└─step 4─┤ install portage://app-benchmarks/stress-ng-0.22.01
│ └─ conf ─┤ USE = "jpeg* -apparmor -keyutils -sctp"
└─step 5─┤ run portage://app-benchmarks/stress-ng-0.22.01
Total: 6 actions (2 downloads, 2 installs, 2 runs), grouped into 5 steps.
8.24 Mb to be downloaded.