>>> Emerging : portage://media-libs/vigra-1.11.2_p20240505:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ useflag portage://sci-libs/hdf5-2.2.0 (-hl)

 └─step  2─┤ download  portage://dev-lang/python-3.12.15
             │           └─ file ─┤ 19.86 Mb  	 Python-3.12.15.tar.xz
             │                    │ 13.95 Kb  	 python-gentoo-patches-3.12.15.tar.xz
             │ download  portage://media-libs/vigra-1.11.2_p20240505
             │           └─ file ─┤ 32.63 Mb  	 vigra-1.11.2_p20240505.tar.gz
             │ download  portage://sci-libs/fftw-3.3.10-r1
             │           └─ file ─┤ 3.95 Mb  	 fftw-3.3.10.tar.gz
             │ download  portage://sci-libs/hdf5-2.2.0
             │           └─ file ─┤ 40.18 Mb  	 hdf5-2.2.0.tar.gz

 └─step  3─┤ install   portage://sci-libs/fftw-3.3.10-r1
             │           └─ conf ─┤ USE = "openmp threads* (-zbus) -doc -fortran -mpi -test"
             │                    │ CPU_FLAGS_X86 = "avx avx2 fma3 sse* sse2* -fma4"
             │                    │ SLOT = "3.0/3"
             │ install   portage://sci-libs/hdf5-2.2.0 (USE modified)
             │           └─ conf ─┤ USE = "threads* zlib -hl -cxx -debug -fortran -mpi -szip -test -unsupported"
             │                    │ SLOT = "0/320-cmake"
             │ install   portage://dev-lang/python-3.12.15
             │           └─ conf ─┤ USE = "gdbm* ncurses pgo* readline sqlite* ssl ensurepip -bluetooth -debug -examples -libedit -test -tk -valgrind
             │                    │          -verify-sig"
             │                    │ SLOT = "3.12"

 └─step  4─┤ run       portage://dev-lang/python-3.12.15
             │ run       portage://sci-libs/fftw-3.3.10-r1
             │ run       portage://sci-libs/hdf5-2.2.0 (USE modified)

 └─step  5─┤ install   portage://media-libs/vigra-1.11.2_p20240505
             │           └─ conf ─┤ USE = "jpeg* png* tiff* zlib fftw hdf5 -mpi -openexr -test"
             │                    │ PYTHON_SINGLE_TARGET = "python3_12"

 └─step  6─┤ run     portage://media-libs/vigra-1.11.2_p20240505

Total: 13 actions (1 useflag, 4 downloads, 4 installs, 4 runs), grouped into 6 steps.
       96.64 Mb to be downloaded.


>>> Assumptions taken during proving & planning:

  USE flag change (1 package):
  Add to /etc/portage/package.use:
    sci-libs/hdf5 -hl