>>> Emerging : portage://xfce-base/xfconf-4.21.2:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ unmask  portage://xfce-base/xfconf-4.21.2

 └─step  2─┤ download  portage://dev-build/xfce4-dev-tools-4.20.0
             │           └─ file ─┤ 371.43 Kb  	 xfce4-dev-tools-4.20.0.tar.bz2
             │ download  portage://xfce-base/libxfce4util-4.21.0
             │           └─ file ─┤ 112.52 Kb  	 libxfce4util-4.21.0.tar.xz
             │ download  portage://xfce-base/xfconf-4.21.2
             │           └─ file ─┤ 157.62 Kb  	 xfconf-4.21.2.tar.xz

Total: 4 actions (1 unmask, 3 downloads), grouped into 2 steps.
       641.57 Kb to be downloaded.


>>> Assumptions taken during proving & planning:

  Package unmask (1 package):
  Add to /etc/portage/package.unmask:
    =xfce-base/xfconf-4.21.2