XP wasn't a set of practices, or methodology, it was a set of principles. "Value working software" etc. The "methodology" flows from there: only do the things

XP wasn't a set of practices, or methodology, it was a set of principles. "Value working software" etc. The "methodology" flows from there: only do the things that help support the principles, get rid of everything else you can (up to and including many of the scrum rituals/meetings).