portage-ng --merge
>>> Emerging : portage://app-arch/dpkg-1.22.21:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://app-arch/dpkg-1.22.21
│ └─ file ─┤ 5.48 Mb dpkg_1.22.21.tar.xz
└─step 2─┤ install portage://app-arch/dpkg-1.22.21
│ └─ conf ─┤ USE = "bzip2 nls zlib lzma update-alternatives zstd -test"
└─step 3─┤ run portage://app-arch/dpkg-1.22.21
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
5.48 Mb to be downloaded.