portage-ng --merge
>>> Emerging : portage://sys-apps/coreutils-9.9-r12:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sys-apps/coreutils-9.9-r12
│ └─ file ─┤ 6.00 Mb coreutils-9.9.tar.xz
└─step 2─┤ downgrade portage://sys-apps/coreutils-9.9-r12 (replaces pkg://sys-apps/coreutils-9.10)
│ └─ conf ─┤ USE = "acl gmp* nls openssl* xattr* -caps -hostname -kill -multicall -static -test -test-full -vanilla -verify-sig"
└─step 3─┤ run portage://sys-apps/coreutils-9.9-r12
Total: 3 actions (1 download, 1 downgrade, 1 run), grouped into 3 steps.
6.00 Mb to be downloaded.