portage-ng --merge
>>> Emerging : portage://sys-apps/locale-gen-3.8:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sys-apps/locale-gen-3.8
│ └─ file ─┤ 17.18 Kb locale-gen-3.8.tar.bz2
└─step 2─┤ downgrade portage://sys-apps/locale-gen-3.8 (replaces pkg://sys-apps/locale-gen-3.10)
└─step 3─┤ run portage://sys-apps/locale-gen-3.8
Total: 3 actions (1 download, 1 downgrade, 1 run), grouped into 3 steps.
17.18 Kb to be downloaded.