portage-ng --merge
>>> Emerging : portage://dev-perl/BerkeleyDB-0.670.0:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-perl/BerkeleyDB-0.670.0
│ └─ file ─┤ 291.17 Kb BerkeleyDB-0.67.tar.gz
│ download portage://sys-libs/db-6.0.35-r5
│ └─ file ─┤ 34.84 Mb db-6.0.35.tar.gz
└─step 2─┤ install portage://sys-libs/db-6.0.35-r5
│ └─ conf ─┤ USE = "-cxx -doc -examples -tcl -test"
│ │ SLOT = "6.0"
└─step 3─┤ run portage://sys-libs/db-6.0.35-r5
└─step 4─┤ install portage://dev-perl/BerkeleyDB-0.670.0
│ └─ conf ─┤ USE = "-test"
│ │ PERL_FEATURES = "ithreads -quadmath"
└─step 5─┤ run portage://dev-perl/BerkeleyDB-0.670.0
Total: 6 actions (2 downloads, 2 installs, 2 runs), grouped into 5 steps.
35.12 Mb to be downloaded.