>>> Emerging : portage://sci-physics/fastjet-3.4.3:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ useflag portage://sci-physics/fastjet-3.4.3 (python_single_target_python3_13)

 └─step  2─┤ download  portage://sci-physics/fastjet-3.4.3
             │           └─ file ─┤ 2.85 Mb  	 fastjet-3.4.3.tar.gz
             │ download  portage://sci-physics/siscone-3.1.2-r1
             │           └─ file ─┤ 569.43 Kb  	 siscone-3.1.2.tar.gz

Total: 3 actions (1 useflag, 2 downloads), grouped into 2 steps.
       3.40 Mb to be downloaded.


>>> Assumptions taken during proving & planning:

  USE flag change (1 package):
  Add to /etc/portage/package.use:
    sci-physics/fastjet python_single_target_python3_13