portage-ng --merge
>>> Emerging : portage://dev-libs/nss-3.125:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-libs/nspr-4.40
│ └─ file ─┤ 985.34 Kb nspr-4.40.tar.gz
│ download portage://dev-libs/nss-3.125
│ └─ file ─┤ 74.93 Mb nss-3.125.tar.gz
└─step 2─┤ install portage://dev-libs/nspr-4.40
│ └─ conf ─┤ USE = "-debug"
└─step 3─┤ run portage://dev-libs/nspr-4.40
└─step 4─┤ install portage://dev-libs/nss-3.125
│ └─ conf ─┤ USE = "utils -cacert -test -test-full"
│ │ CPU_FLAGS_X86 = "avx2 sse3*"
└─step 5─┤ run portage://dev-libs/nss-3.125
Total: 6 actions (2 downloads, 2 installs, 2 runs), grouped into 5 steps.
75.89 Mb to be downloaded.