portage-ng --merge
>>> Emerging : portage://sys-apps/grep-3.11-r1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sys-apps/grep-3.11-r1
│ └─ file ─┤ 1.62 Mb grep-3.11.tar.xz
└─step 2─┤ downgrade portage://sys-apps/grep-3.11-r1 (replaces pkg://sys-apps/grep-3.12)
│ └─ conf ─┤ USE = "nls pcre egrep-fgrep -static -verify-sig"
└─step 3─┤ run portage://sys-apps/grep-3.11-r1
Total: 3 actions (1 download, 1 downgrade, 1 run), grouped into 3 steps.
1.62 Mb to be downloaded.