[Unit]
BindsTo=autostart.target
After=windowmanager.target

[Service]
Type=oneshot
# systemd.service(5):

# > The command to execute may contain spaces, but control characters are not
# > allowed.
ExecStart=/usr/bin/env screencfg "%h/.screencfg/%H/default.yml"
RemainAfterExit=true
PassEnvironment=DISPLAY