>>> Emerging : portage://dev-lang/fennel-1.4.2-r1:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ useflag portage://dev-lang/fennel-1.4.2-r1 (lua_single_target_lua5-4)

 └─step  2─┤ download  portage://dev-lang/fennel-1.4.2-r1
             │           └─ file ─┤ 294.14 Kb  	 fennel-1.4.2.tar.gz

 └─step  3─┤ install   portage://dev-lang/fennel-1.4.2-r1 (USE modified)
             │           └─ conf ─┤ USE = ""
             │                    │ LUA_SINGLE_TARGET = "-lua5-3 lua5-4 -luajit"
             │                    │ SLOT = "0/1.4.2"

 └─step  4─┤ run     portage://dev-lang/fennel-1.4.2-r1

Total: 4 actions (1 useflag, 1 download, 1 install, 1 run), grouped into 4 steps.
       294.14 Kb to be downloaded.


>>> Assumptions taken during proving & planning:

  USE flag change (1 package):
  Add to /etc/portage/package.use:
    dev-lang/fennel lua_single_target_lua5-4