portage-ng --merge
>>> Emerging : portage://app-misc/opentmux-0.1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://app-misc/opentmux-0.1
│ └─ file ─┤ 1.30 Mb opentmux-0.1.tar.gz
└─step 2─┤ install portage://app-misc/opentmux-0.1
│ └─ conf ─┤ USE = "-debug -jemalloc -sixel -utempter -vim-syntax"
└─step 3─┤ run portage://app-misc/opentmux-0.1
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
1.30 Mb to be downloaded.