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From: "Ludovic Courtès" <ludo@gnu.org>
To: Maxime Devos <maximedevos@telenet.be>
Cc: 55898@debbugs.gnu.org, Maxim Cournoyer <maxim.cournoyer@gmail.com>
Subject: bug#55898: Services depending on new Shepherd features may fail until reboot
Date: Tue, 30 Aug 2022 15:50:48 +0200	[thread overview]
Message-ID: <87fshdyh53.fsf@gnu.org> (raw)
In-Reply-To: <c908b6d8-49ce-0eb4-ebe1-011e3c11699c@telenet.be> (Maxime Devos's message of "Tue, 30 Aug 2022 11:35:34 +0200")

Maxime Devos <maximedevos@telenet.be> skribis:

> On 30-08-2022 09:33, Ludovic Courtès wrote:
>
>> So are you suggesting replacing:
>>
>>    (defined? 'make-inetd-constructor)
>>
>> by something like:
>>
>>    (version<? shepherd-version "0.9.0")
>>
>> or is it something different that you have in mind?
>>
>> I’m not sure how this could improve the user experience, unless by
>> “user” you mean the person writing the service?
>
> (defined? '...) does not work in all contexts -- it works on the
> top-level, but not always inside a procedure, as it tests if the thing
> is defined in (current-module), and not whether it is defined in the
> module that calls (defined? '...).

Right, but that’s a bit of a theoretical concern in my view.

Alternatively, one could write:

  (module-defined? (resolve-interface '(shepherd service))
                   'make-inetd-constructor)

Thanks,
Ludo’.




  reply	other threads:[~2022-08-30 13:51 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-11  5:53 bug#55898: jami service failing following 'guix deploy' update Maxim Cournoyer
2022-06-11 14:51 ` Maxime Devos
2022-06-14 19:40   ` Maxim Cournoyer
2022-06-24 17:52     ` Maxim Cournoyer
2022-06-24 18:01     ` bug#55898: jami service failing following reconfigure Maxim Cournoyer
2022-07-06 21:38       ` bug#55898: jami service failing following 'guix deploy' update Maxim Cournoyer
2022-07-06 22:01         ` Maxim Cournoyer
2022-07-20 21:19           ` bug#55898: Services depending on new Shepherd features may fail until reboot Ludovic Courtès
2022-07-21  4:10             ` Maxim Cournoyer
2022-08-29 13:43               ` Ludovic Courtès
2022-08-29 21:06                 ` Maxim Cournoyer
2022-08-30  7:33                   ` Ludovic Courtès
2022-08-30  9:35                     ` Maxime Devos
2022-08-30 13:50                       ` Ludovic Courtès [this message]
2022-09-01 13:18                     ` Maxim Cournoyer
2022-09-01 13:28                       ` Maxime Devos
2022-09-01 13:51                       ` Ludovic Courtès
2022-09-01 19:16                         ` Maxim Cournoyer
2022-09-02  9:10                           ` Ludovic Courtès

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