robert ~ # emerge -p xfce4-panel
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild U ] xfce-base/libxfce4util-4.4.0-r1 [4.2.3.2]
[ebuild U ] xfce-base/libxfcegui4-4.4.0 [4.2.3] USE="-doc% -startup-notification%"
[ebuild U ] xfce-base/libxfce4mcs-4.4.0 [4.2.3] USE="-doc% -startup-notification%"
[ebuild U ] xfce-base/xfce-mcs-manager-4.4.0 [4.2.3]
[ebuild N ] xfce-base/xfce4-panel-4.4.0 USE="-debug -doc -startup-notification"
[blocks B ] >=xfce-base/xfce4-panel-4.3 (is blocking xfce-extra/xfce4-sensors-0.7.0, xfce-extra/xfce4-xkb-0.3.5)
robert ~ # emerge --unmerge xfce4-panel
--- Couldn't find 'xfce4-panel' to unmerge.
>>> No packages selected for removal by unmerge