portage-ng --merge
>>> Emerging : portage://sci-libs/ccfits-2.5:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-lang/cfortran-20210827-r1
│ └─ file ─┤ 7.91 Kb cfortran_20210827-1.debian.tar.xz
│ │ 92.28 Kb cfortran_20210827.orig.tar.gz
│ download portage://sci-libs/ccfits-2.5
│ └─ file ─┤ 1.35 Mb CCfits-2.5.tar.gz
│ download portage://sci-libs/cfitsio-4.7.0
│ └─ file ─┤ 2.06 Mb cfitsio-4.7.0.tar.gz
└─step 2─┤ install portage://virtual/fortran-0-r1
│ └─ conf ─┤ USE = "openmp"
│ install portage://dev-lang/cfortran-20210827-r1
│ └─ conf ─┤ USE = "-examples -test"
└─step 3─┤ run portage://virtual/fortran-0-r1
└─step 4─┤ install portage://sci-libs/cfitsio-4.7.0
│ └─ conf ─┤ USE = "bzip2 -curl -test -tools"
│ │ SLOT = "0/10-r1"
└─step 5─┤ run portage://sci-libs/cfitsio-4.7.0
└─step 6─┤ install portage://sci-libs/ccfits-2.5
│ └─ conf ─┤ USE = "-doc"
└─step 7─┤ run portage://sci-libs/ccfits-2.5
Total: 10 actions (3 downloads, 4 installs, 3 runs), grouped into 7 steps.
3.51 Mb to be downloaded.