portage-ng --merge
>>> Emerging : portage://dev-libs/spdlog-1.15.3-r1:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://app-text/doxygen-1.16.1
│ └─ file ─┤ 8.55 Mb doxygen-1.16.1.src.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://dev-libs/spdlog-1.15.3-r1
│ └─ file ─┤ 271.18 Kb spdlog-1.15.3.tar.gz
└─step 2─┤ 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"
│ downgrade portage://dev-libs/spdlog-1.15.3-r1 (replaces pkg://dev-libs/spdlog-1.17.0)
│ └─ conf ─┤ USE = "-test"
│ │ SLOT = "0/1.15"
└─step 3─┤ run portage://dev-libs/spdlog-1.15.3-r1
└─step 4─┤ update portage://app-text/doxygen-1.16.1 (replaces pkg://app-text/doxygen-1.16.1) (abi-rebuild: dev-libs/spdlog)
│ └─ conf ─┤ USE = "-clang -debug -doc -dot -doxysearch -gui -test"
│ │ LLVM_SLOT = "22* -18 -19 -20 -21*"
Total: 7 actions (3 downloads, 1 install, 1 update, 1 downgrade, 1 run), grouped into 4 steps.
42.85 Mb to be downloaded.