GNU bug report logs - #41207
accountsservice daemon lacks dbus interfaces

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#41207: closed (accountsservice daemon lacks dbus interfaces)
Date: Sun, 30 Jul 2023 13:23:01 +0000

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Your message dated Sun, 30 Jul 2023 09:21:58 -0400
with message-id <87leexsfex.fsf <at> gmail.com>
and subject line Re: bug#41207: accountsservice daemon lacks dbus interfaces
has caused the debbugs.gnu.org bug report #41207,
regarding accountsservice daemon lacks dbus interfaces
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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41207: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=41207
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From: L  p R n  d n    <guix <at> lprndn.info>
To: bug-guix <at> gnu.org
Subject: accountsservice daemon lacks dbus interfaces
Date: Tue, 12 May 2020 14:04:20 +0200

[Message part 3 (text/plain, inline)]

Hello,

The accountsservice service hasn't access to dbus' interfaces throwing
an error when they're needed.The problem, at least, appears with LightDM.
The error looks like:

WARNING: Error updating user /org/freedesktop/Accounts/User1000:
GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No such interface
"org.freedesktop.DisplayManager.AccountsService"

For information, it already occured[0] and was resolved[1][2] in NixOS.

After testing, simply wrapping the accountsservice package with relevant
XDG_DATA_DIRS directories as done in the attached patch resolves the
issue. However, there might be a proper solution I'm not aware of.
Also the patch used in [2] doesn't seem to be needed in Guix.

Have a nice day,

L  p R n  d n

[0]: https://github.com/NixOS/nixpkgs/issues/45059
[1]: https://github.com/NixOS/nixpkgs/pull/45107
[2]: https://github.com/NixOS/nixpkgs/pull/72400

[0001-gnu-accountsservice-Wrap-program.patch (text/x-patch, attachment)]

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From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 41207-done <at> debbugs.gnu.org, L p R n d n <guix <at> lprndn.info>
Subject: Re: bug#41207: accountsservice daemon lacks dbus interfaces
Date: Sun, 30 Jul 2023 09:21:58 -0400

Hi,

Ludovic Courtès <ludo <at> gnu.org> writes:

> Hi,
>
> L  p R n  d n    <guix <at> lprndn.info> skribis:
>
>> Ludovic Courtès <ludo <at> gnu.org> writes:
>>
>>>>> L  p R n  d n    <guix <at> lprndn.info> skribis:
>> [...]
>>>> Not exactly, my understanding is that *accountsservice* doesn't find
>>>> 'org.freedesktop.Accounts.service' which is provided (and asked) by
>>>> lightdm. (I think the error comes from accountsservice)
>>>
>>> But see:
>>>
>>> $ (cd /tmp; tar xf $(guix build -S lightdm))
>>> $ grep -r "Error updating user" /tmp/lightdm-1.30.0/
>>> /tmp/lightdm-1.30.0/common/user-list.c: g_warning ("Error updating
>>> user %s: %s", priv->path, error->message);
>>> /tmp/lightdm-1.30.0/common/user-list.c: g_warning ("Error updating
>>> user %s: %s", priv->path, error->message);
>>> $ (cd /tmp; tar xf $(guix build -S accountsservice))
>>> $ find /tmp/accountsservice-0.6.50/ -name org.freedesktop\*.service.in
>>> /tmp/accountsservice-0.6.50/data/org.freedesktop.Accounts.service.in
>>> $ find $(guix build accountsservice) -name org.freedesktop\*.service
>>> /gnu/store/l9qyf0brhhq7mwcsyhjsh7k0d3ri3ay2-accountsservice-0.6.50/share/dbus-1/system-services/org.freedesktop.Accounts.service
>>>
>>> That’s why I think it’s lightdm (or dbus-daemon?) that fails to find the
>>> .service file.
>>>
>>> ‘accountsservice-service-type’ extends dbus, such that we have
>>> /etc/dbus-1/system-services/org.freedesktop.Accounts.service.  Do you
>>> see this as well?
>>
>> You're right! ;) And probably a dbus-daemon problem from what I
>> understand. But I really don't know what I'm talking about here...
>> However, just to clarify, I think it's not that it's not finding
>> dbus-1/system-services/org.freedesktop.Accounts.service but
>> dbus-1/interfaces/org.freedesktop.Accounts(.Users?).xml. In that case,
>> using #:env-variable for the dbus service might be a possibility.
>> Really, I have quite a lot of files in
>> /run/current-system/profile/share/dbus-1/interfaces but I don't know what are
>> their purpose... :/
>
> I think we’d need to look at the lightdm service to further debug this.
>
> It’s not upstream yet, right?

We now ship a working lightdm service.  I believe this bug report was
fixed in 6aeabba2baa11b4a0a778fc353e62d0fe2f6b5ec ("gnu: lightdm: Build
AccountsService files.").

Closing.

-- 
Thanks,
Maxim

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