>>> Emerging : portage://sci-libs/netcdf-4.9.3-r3:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ useflag portage://sci-libs/hdf5-1.14.6-r2 (-threads)

 └─step  2─┤ download  portage://dev-libs/libzip-1.12.1
             │           └─ file ─┤ 794.32 Kb  	 libzip-1.12.1.tar.xz
             │ download  portage://sci-libs/hdf5-1.14.6-r2
             │           └─ file ─┤ 37.47 Mb  	 hdf5-1.14.6.tar.gz
             │ download  portage://sci-libs/libaec-1.1.4
             │           └─ file ─┤ 2.21 Mb  	 libaec-v1.1.4.tar.bz2
             │ download  portage://sci-libs/netcdf-4.9.3-r3
             │           └─ file ─┤ 12.62 Mb  	 netcdf-c-4.9.3.tar.gz

 └─step  3─┤ install   portage://dev-libs/libzip-1.12.1
             │           └─ conf ─┤ USE = "bzip2 ssl -gnutls -lzma -test -tools -zstd"
             │                    │ SLOT = "0/5"
             │ install   portage://sci-libs/hdf5-1.14.6-r2 (USE modified)
             │           └─ conf ─┤ USE = "-threads zlib hl -cxx -debug -fortran -mpi -szip -test -unsupported"
             │                    │ SLOT = "0/310-cmake"

 └─step  4─┤ install   portage://sci-libs/libaec-1.1.4
             │           └─ conf ─┤ USE = "szip -test"
             │                    │ SLOT = "0/2"
             │ run       portage://dev-libs/libzip-1.12.1
             │ run       portage://sci-libs/hdf5-1.14.6-r2 (USE modified)

 └─step  5─┤ run       portage://sci-libs/libaec-1.1.4

 └─step  6─┤ install   portage://virtual/szip-2.1
             │           └─ conf ─┤ SLOT = "0/2"

 └─step  7─┤ run       portage://virtual/szip-2.1

 └─step  8─┤ install   portage://sci-libs/netcdf-4.9.3-r3
             │           └─ conf ─┤ USE = "bzip2 dap hdf5 -blosc -doc -examples -hdf -logging -mpi -szip -test -zstd"
             │                    │ SLOT = "0/22"

 └─step  9─┤ run     portage://sci-libs/netcdf-4.9.3-r3

Total: 15 actions (1 useflag, 4 downloads, 5 installs, 5 runs), grouped into 9 steps.
       53.08 Mb to be downloaded.


>>> Assumptions taken during proving & planning:

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