>>> Emerging : portage://net-libs/libtrace-4.0.21:run?{[]}

These are the packages that would be merged, in order:

Calculating dependencies... done!

 └─step  1─┤ useflag portage://app-text/doxygen-1.18.0-r1 (dot)

 └─step  2─┤ download  portage://app-text/doxygen-1.18.0-r1
             │           └─ file ─┤ 9.45 Mb  	 doxygen-1.18.0.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://net-libs/libtrace-4.0.21
             │           └─ file ─┤ 3.57 Mb  	 libtrace-4.0.21.tar.gz
             │ download  portage://net-libs/wandio-4.2.6
             │           └─ file ─┤ 16.39 Mb  	 wandio-4.2.6.tar.gz

 └─step  3─┤ 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  4─┤ install   portage://net-libs/wandio-4.2.6
             │           └─ conf ─┤ USE = "bzip2 http* zlib -lz4 -lzma -lzo -test -zstd"
             │                    │ SLOT = "0/6"

 └─step  5─┤ update    portage://app-text/doxygen-1.18.0-r1 (USE modified)
             │           └─ conf ─┤ USE = "-clang -debug -doc dot -doxysearch -gui -test"
             │                    │ LLVM_SLOT = "22* -18 -19 -20 -21*"
             │ run       portage://net-libs/wandio-4.2.6

 └─step  6─┤ install   portage://net-libs/libtrace-4.0.21
             │           └─ conf ─┤ USE = "ncurses -doc -numa"

 └─step  7─┤ run     portage://net-libs/libtrace-4.0.21

Total: 11 actions (1 useflag, 4 downloads, 3 installs, 1 update, 2 runs), grouped into 7 steps.
       63.44 Mb to be downloaded.


>>> Assumptions taken during proving & planning:

  USE flag change (1 package):
  Add to /etc/portage/package.use:
    app-text/doxygen dot