Bug#903011: please consider non-disruptive workaround

[Ryutaroh Matsumoto]

Dear Debian systemd maintainers,
CC: Michael,

This debian bug #903011 seems rather severe to me
as this makes all the per-user resource control unusable
as reported to the upstream at

https://github.com/systemd/systemd/issues/9502
https://github.com/systemd/systemd/issues/9512
https://github.com/systemd/systemd/issues/9578

and the upstream maintainers do not seem eager to address this bug,
though the upstream report 9512 received "bug" and "v240 milestone" tags,
while 9502 and 9578 keep "needs-reporter-feedback" tag despite
sufficient feedbacks.

There is a non-disruptive workaround for this bug, and it
prevents all of the upstream bugs 9502, 9512 and 9578 above:

(1) Make the following file as /lib/systemd/system/user-nonexistent.slice

[Unit]
Description=Dummy Slice for working around the bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903011
Documentation=https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903011
Before=systemd-user-sessions.service systemd-logind.service

[Slice]
Slice=user.slice

[Install]
WantedBy=multi-user.target

(2) Run systemctl enable user-nonexistent.slice


If the debian systemd maintainers

(A) regard this group of three upstream bugs as severe, and
(B) confirm that the above workaround works as expected and is non-disruptive,

I would appreciate it if you consider incorporating
the above workaround until the real cause is fixed in the upstream.

Best regards,
Ryutaroh Matsumoto