>>> Emerging : portage://dev-libs/libsigc++-2.12.1:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ download  portage://dev-libs/libsigc++-2.12.1
             │           └─ file ─┤ 4.81 Mb  	 libsigc++-2.12.1.tar.xz

Total: 1 action (1 download), grouped into 1 step.
       4.81 Mb to be downloaded.