>>> Emerging : portage://sci-physics/bullet-3.21:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ download  portage://sci-physics/bullet-3.21
             │           └─ file ─┤ 126.88 Mb  	 bullet-3.21.tar.gz

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