Enable virtual/udev integration (device discovery, power and storage device support, etc)

Packages describing “udev” as local USE flag

Package “udev” Flag Description
app-crypt/zulucrypt Whether udev will be consulted when deciding if a volume is system or not
gnome-base/gvfs Enable udev base replacement code for cdda feature
sys-apps/pcsc-lite Use virtual/libudev rules to handle devices' permissions and hotplug support. Unless you know what you're doing do not disable this flag on Linux kernels. This is provided as an option for completeness.
x11-misc/py3status Install extra requirement dev-python/pyudev to enable udev events monitoring on modules.
app-metrics/collectd Enable optional udev usage in disk plugin; Required for smart plugin
media-tv/kodi Use sys-fs/udev rules to handle devices' permissions and hotplug support. Unless you know what you're doing do not disable this flag on Linux kernels. This is provided as an option for completeness.
games-simulation/flightgear Enable event-based Input devices through virtual/udev
app-emulation/virtualbox Controls installation of special USB udev rules.
dev-libs/libcec Enable detection of USB-CEC port by udev
sys-apps/systemd-utils Enable systemd-udev (userspace device manager)
app-backup/rear Have ReaR start backup when attaching your USB drive.

All packages providing a “udev” USE flag (41)