dev-util/xxdiff
A graphical file and directories comparator and merge tool.
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kde
Global: Adds support for kde-base/kde (K Desktop Enviroment)
python
Global: Adds support/bindings for the Python language
debug
Global: Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see http://www.gentoo.org/proj/en/qa/backtraces.xml