>>> 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

Total: 5 actions (1 useflag, 4 downloads), grouped into 2 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