portage-ng --merge
>>> Emerging : portage://dev-lang/python-2.7.18_p16-r2:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-lang/python-2.7.18_p16-r2
│ └─ file ─┤ 12.26 Mb Python-2.7.18.tar.xz
│ │ 34.62 Kb python-gentoo-patches-2.7.18_p16.tar.xz
└─step 2─┤ install portage://dev-lang/python-2.7.18_p16-r2
│ └─ conf ─┤ USE = "gdbm* ncurses readline sqlite* ssl xml%* (-berkdb) -bluetooth -examples -valgrind -verify-sig -wininst%"
│ │ SLOT = "2.7"
└─step 3─┤ run portage://dev-lang/python-2.7.18_p16-r2
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
12.29 Mb to be downloaded.