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python-versiontools supports Python 3, so there's no reason to limit it to Python 2 only. Reviewed-by: Yegor Yefremov <yegorslists@googlemail.com> Signed-off-by: Matthew Carruth <carruthm@gmail.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>