PKGBUILDs/extra/qemu/qemu.install

# Arg 1:  the new package version
post_install() {
  # create kvm group
  systemd-sysusers qemu.conf

  # trigger events on modules files when already loaded
  for _f in /sys/devices/virtual/misc/{kvm,vhost-net}; do
    [[ -e "$_f" ]] &&  udevadm trigger "$_f"
  done
  :
}