portage-ng --merge
>>> Emerging : portage://sys-fs/aufs-headers-4.14_p20190603:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sys-fs/aufs-headers-4.14_p20190603
│ └─ file ─┤ 3.27 Kb aufs-headers-4.14_p20190603.tar.xz
└─step 2─┤ install portage://sys-fs/aufs-headers-4.14_p20190603
└─step 3─┤ run portage://sys-fs/aufs-headers-4.14_p20190603
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
3.27 Kb to be downloaded.