- util-linux >= v2.19 (requires fsck -l, agetty -s)
- sulogin (from util-linux >= 2.22 or sysvinit-tools, optional but recommended)
+ util-linux >= v2.19 (requires fsck -l, agetty -s),
+ v2.21 required for tests in test/
+ dbus >= 1.4.0 (strictly speaking optional, but recommended)
+ sulogin (from util-linux >= 2.22 or sysvinit-tools, optional but recommended,
+ required for tests in test/)