nixpkgs/upstart-jobs/udev.nix

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{writeText, cleanSource, udev, procps}:
let
conf = writeText "udev.conf" "
udev_rules=\"${cleanSource ./udev-rules}\"
";
in
{
name = "udev";
job = "
start on startup
stop on shutdown
env UDEV_CONFIG_FILE=${conf}
start script
echo '' > /proc/sys/kernel/hotplug
# Start udev.
${udev}/sbin/udevd --daemon
# Let udev create device nodes for all modules that have already
# been loaded into the kernel (or for which support is built into
# the kernel).
${udev}/sbin/udevtrigger
${udev}/sbin/udevsettle # wait for udev to finish
# Kill udev, let Upstart restart and monitor it. (This is nasty,
# but we have to run udevtrigger first. Maybe we can use
# Upstart's `binary' keyword, but it isn't implemented yet.)
if ${procps}/bin/pkill -u root '^udevd$'; then
echo \"couldn't stop udevd\"
fi
initctl emit new-devices
end script
respawn ${udev}/sbin/udevd
";
}