>>> Emerging : portage://dev-libs/mimalloc-3.4.5:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ download  portage://dev-libs/mimalloc-3.4.5
             │           └─ file ─┤ 1.36 Mb  	 mimalloc-3.4.5.tar.gz

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