qubes-installer-qubes-os/anaconda/data/systemd/anaconda-pre.service

[Unit]
# This service is to be run before anaconda starts and log data before anaconda changes them
Description=pre-anaconda logging service
Requires=basic.target
After=basic.target
Before=anaconda.target
Wants=instperf.service
Wants=rsyslog.service
Wants=systemd-udev-settle.service
Wants=NetworkManager.service
Wants=plymouth-quit.service plymouth-quit-wait.service
Wants=zram.service
Wants=systemd-logind.service

[Service]
Type=oneshot
ExecStart=/usr/libexec/anaconda/anaconda-pre-log-gen
StardardInput=tty
StandardOutput=journal+console
StandardError=journal+console
TimeoutSec=0