Hi, the i686 Arch does have udev-compat 150. So I am guess you are building for x86_64 Arch.udev-compat 150 is still in [Testing][1]
Either wait for it or Enable [Testing] Repository [1] http://www.archlinux.org/packages/testing/x86_64/udev-compat/ Regards, Gaurish Sharma www.gaurishsharma.com
