>>> Emerging : portage://xfce-base/tumbler-4.21.1:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ unmask  portage://xfce-base/tumbler-4.21.1

 └─step  2─┤ download  portage://app-text/docbook-xml-dtd-4.3-r2
             │           └─ file ─┤ 81.90 Kb  	 docbook-xml-4.3.zip
             │ download  portage://dev-build/xfce4-dev-tools-4.20.0
             │           └─ file ─┤ 371.43 Kb  	 xfce4-dev-tools-4.20.0.tar.bz2
             │ download  portage://x11-libs/gdk-pixbuf-2.44.8
             │           └─ file ─┤ 5.76 Mb  	 gdk-pixbuf-2.44.8.tar.xz
             │ download  portage://xfce-base/libxfce4util-4.21.0
             │           └─ file ─┤ 112.52 Kb  	 libxfce4util-4.21.0.tar.xz
             │ download  portage://xfce-base/tumbler-4.21.1
             │           └─ file ─┤ 137.86 Kb  	 tumbler-4.21.1.tar.xz

Total: 6 actions (1 unmask, 5 downloads), grouped into 2 steps.
       6.45 Mb to be downloaded.


>>> Assumptions taken during proving & planning:

  Package unmask (1 package):
  Add to /etc/portage/package.unmask:
    =xfce-base/tumbler-4.21.1