portage-ng --merge
>>> Emerging : portage://sci-libs/ceres-solver-2.2.0-r2:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-cpp/glog-0.6.0-r1
│ └─ file ─┤ 188.74 Kb glog-0.6.0.tar.gz
│ download portage://dev-lang/python-3.15.0
│ └─ file ─┤ 34.04 Mb Python-3.15.0.tar.xz
│ │ 4.52 Kb python-gentoo-patches-3.15.0.tar.xz
│ download portage://sci-libs/ceres-solver-2.2.0-r2
│ └─ file ─┤ 7.28 Mb ceres-solver-2.2.0.tar.gz
└─step 2─┤ install portage://dev-cpp/glog-0.6.0-r1
│ └─ conf ─┤ USE = "libunwind -gflags -llvm-libunwind -test"
│ │ SLOT = "0/1"
│ install portage://dev-lang/python-3.15.0
│ └─ conf ─┤ USE = "gdbm* ncurses pgo* readline sqlite* ssl ensurepip (-jit) -bluetooth -build% -debug -examples -libedit
│ │ -tail-call-interp -test -tk -valgrind -verify-sig"
│ │ LLVM_SLOT = "21%*"
│ │ SLOT = "3.15"
└─step 3─┤ run portage://dev-cpp/glog-0.6.0-r1
└─step 4─┤ install portage://sci-libs/ceres-solver-2.2.0-r2
│ └─ conf ─┤ USE = "schur -doc -examples -gflags -lapack -sparse -test"
│ │ SLOT = "0/1"
└─step 5─┤ run portage://sci-libs/ceres-solver-2.2.0-r2
Total: 8 actions (3 downloads, 3 installs, 2 runs), grouped into 5 steps.
41.51 Mb to be downloaded.