--- /dev/null
+# This file is part of systemd.
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+
+[Unit]
+Description=User Manager for %I
+After=systemd-user-sessions.service
+
+[Service]
+User=%I
+PAMName=systemd-user
+Type=notify
+ExecStart=-@rootlibexecdir@/systemd --user
+m4_ifdef(`ENABLE_KDBUS',
+Environment=DBUS_SESSION_BUS_ADDRESS=kernel:path=/dev/kdbus/%I-user/bus;unix:path=/run/user/%I/bus
+,m4_dnl
+Environment=DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/%I/bus
+)m4_dnl
+Slice=user-%i.slice