portage-ng --merge
>>> Emerging : portage://sci-mathematics/form-5.0.0_beta1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sci-mathematics/form-5.0.0_beta1
│ └─ file ─┤ 1.35 Mb form-5.0.0_beta1.tar.gz
└─step 2─┤ install portage://sci-mathematics/form-5.0.0_beta1
│ └─ conf ─┤ USE = "gmp* threads* zlib -devref -doc -doxygen -emacs -mpi"
└─step 3─┤ run portage://sci-mathematics/form-5.0.0_beta1
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
1.35 Mb to be downloaded.