Posted Feb 4, 2013 21:21 UTC (Mon) by anselm (subscriber, #2796)
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You don't need to install systemd in order to install udev. If you start from sources you have to build both but it is perfectly possible to install (or package for installation) udev without anything from systemd.
This has all been explained to death here already.
Poettering: The Biggest Myths
Posted Feb 4, 2013 21:23 UTC (Mon) by raven667 (subscriber, #5198)
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They do share build infrastructure but you can run them independently so running udev doesn't imply running systemd. You're not going to get some kind of systemd cooties from building the shared components you don't end up needing if you just want udev. 8-)