Ludovic Courtès <ludo@HIDDEN>
to control <at> debbugs.gnu.org.
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From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludovic.courtes@HIDDEN>
To: Adam Faiz <adam.faiz@HIDDEN>
Subject: Re: [Shepherd 0.9.3] =?utf-8?B?4oCYc3lzdGVtKuKAmQ==?= replacement
cannot be passed environment variables
References: <7bff0337-5bfd-22d9-8cc2-b7912eef0f66@HIDDEN>
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In-Reply-To: <7bff0337-5bfd-22d9-8cc2-b7912eef0f66@HIDDEN> (Adam Faiz's
message of "Thu, 22 Dec 2022 16:17:59 +0000")
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Adam Faiz <adam.faiz@HIDDEN> skribis:
>> I think we=E2=80=99ll have to add a parameter to =E2=80=98spawn-command=
=E2=80=99 to specify
>> environment variables.
>> Ludo=E2=80=99.
> If you do this, can you add an #:append? flag which adds environment
> variables to the inherited environment instead of specifying the
> variables declaratively? It can be #f by default.
>
> It would be very useful for me using the shepherd as init on a foreign
> distro, so I don't have to use the `env` command.
You could always write something like:
#:environment-variables `("EXTRA_VARIABLE=3Dsomething" ,@(environ))
to append =E2=80=98EXTRA_VARIABLE=E2=80=99 to those of the environment.
So I don=E2=80=99t think we need #:append.
Thanks for your feedback,
Ludo=E2=80=99.
bug-guix@HIDDEN:bug#60106; Package guix.
Full text available.Received: (at 60106) by debbugs.gnu.org; 22 Dec 2022 16:18:15 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Dec 22 11:18:15 2022 Received: from localhost ([127.0.0.1]:35926 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1p8OGs-0000HK-SC for submit <at> debbugs.gnu.org; Thu, 22 Dec 2022 11:18:15 -0500 Received: from knopi.disroot.org ([178.21.23.139]:53474) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <adam.faiz@HIDDEN>) id 1p8OGo-0000Gr-9K for 60106 <at> debbugs.gnu.org; Thu, 22 Dec 2022 11:18:11 -0500 Received: from localhost (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 8632340F25; Thu, 22 Dec 2022 17:18:08 +0100 (CET) X-Virus-Scanned: SPAM Filter at disroot.org Received: from knopi.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id r66vSGWVXhlv; Thu, 22 Dec 2022 17:18:07 +0100 (CET) Message-ID: <7bff0337-5bfd-22d9-8cc2-b7912eef0f66@HIDDEN> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1671725887; bh=e9QYmWo8crXOkI1yEv9oQkI2dZBWbDkI5gECWpcKumQ=; h=Date:To:Subject:From:Cc; b=SAKq1/RNtR9fj0NUspbPEnTyTGIZA/XSLtcb4VVItPy/izfRsBtWUjxjTI2Nao+Xa 7lm9OPLC3JILJEv9wQp3AuuYQY24RwTJsNTW+Sj63lHkIoFD/P6jnCNY6fluRJdHN3 WssnN0d1heOug3mrqAwSHieFtfGda3Df8XNdxxRIGZg8FpqRnmmqQc1Dk6POIVdA+X ZwRbbmx1UNfQ6fwmHgKWDTp2ksDcjL8vUZtNIaZRgTGVQhTfCSX9kxl8wjI4h5Zaer +0l4QIpGLLENNVl5Jwfq+d+k0pKLQ4WvFH6Nxw90+fvtlnH+4UpIpBcfNBZVX9MRwP sOGsx8LoA7Lcw== Date: Thu, 22 Dec 2022 16:17:59 +0000 MIME-Version: 1.0 To: 60106 <at> debbugs.gnu.org Subject: =?UTF-8?B?W1NoZXBoZXJkIDAuOS4zXSDigJhzeXN0ZW0q4oCZIHJlcGxhY2VtZW50?= =?UTF-8?Q?_cannot_be_passed_environment_variables?= Content-Language: en-US From: Adam Faiz <adam.faiz@HIDDEN> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 60106 Cc: ludovic.courtes@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) > I think we’ll have to add a parameter to ‘spawn-command’ to specify > environment variables. > > Ludo’. If you do this, can you add an #:append? flag which adds environment variables to the inherited environment instead of specifying the variables declaratively? It can be #f by default. It would be very useful for me using the shepherd as init on a foreign distro, so I don't have to use the `env` command.
bug-guix@HIDDEN:bug#60106; Package guix.
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From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludovic.courtes@HIDDEN>
To: bug-guix@HIDDEN
Subject: [Shepherd 0.9.3] =?utf-8?B?4oCYc3lzdGVtKuKAmQ==?= replacement
cannot be passed environment variables
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As we found out while debugging <https://issues.guix.gnu.org/60010>, the
Shepherd 0.9.3, with its =E2=80=98system*=E2=80=99 replacement (aka. =E2=80=
=98spawn-command=E2=80=99),
makes it very hard to spawn a command with different environment
variables.
The following options don=E2=80=99t work:
=E2=80=A2 Changing shepherd=E2=80=99s own environment variables with =E2=
=80=98setenv=E2=80=99 for
instance: =E2=80=98spawn-command=E2=80=99 calls =E2=80=98fork+exec-comm=
and=E2=80=99, whose default
#:environment-variables is provided by the
=E2=80=98default-environment-variables=E2=80=99 parameter, which gets i=
ts default
value at when shepherd starts. There=E2=80=99s no environment variable
inheritance, contrary to the real =E2=80=98system*=E2=80=99.
=E2=80=A2 Parameterizing =E2=80=98default-environment-variables=E2=80=99:
(parameterize ((default-environment-variables =E2=80=A6))
(system* =E2=80=A6))
That won=E2=80=99t work because =E2=80=98spawn-command=E2=80=99 delegat=
es to the process
monitoring fiber, which has a different dynamic state and thus
doesn=E2=80=99t see this change.
=E2=80=A2 Even a plain (set! default-environment-variables =E2=80=A6) won=
=E2=80=99t work,
probably due to inlining within (shepherd services).
I think we=E2=80=99ll have to add a parameter to =E2=80=98spawn-command=E2=
=80=99 to specify
environment variables.
Ludo=E2=80=99.
Ludovic Courtès <ludovic.courtes@HIDDEN>:bug-guix@HIDDEN.
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