>>> Emerging : portage://net-libs/libwebsockets-4.5.8-r1:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ useflag portage://net-libs/libwebsockets-4.5.8-r1 (libuv)

 └─step  2─┤ download  portage://net-libs/libwebsockets-4.5.8-r1
             │           └─ file ─┤ 19.23 Mb  	 libwebsockets-4.5.8.tar.gz

Total: 2 actions (1 useflag, 1 download), grouped into 2 steps.
       19.23 Mb to be downloaded.


>>> Assumptions taken during proving & planning:

  USE flag change (1 package):
  Add to /etc/portage/package.use:
    net-libs/libwebsockets libuv