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Re: overriding essential-services

From: Ludovic Courtès
Subject: Re: overriding essential-services
Date: Tue, 22 Aug 2017 11:46:00 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux)

Ricardo Wurmus <address@hidden> skribis:

> Alex Kost <address@hidden> writes:
>> Ricardo Wurmus (2017-08-11 22:26 +0200) wrote:
>>> Hi Guix,
>>> I want to make sure that /etc/environment includes GUILE_LOAD_PATH and
>>> GUILE_LOAD_COMPILED_PATH, because that’s needed for offloading.
>>> “/etc/environment” is created by the “session-environment-service”
>>> service, which is part of “essential-services”.  It is not part of
>>> %base-services, so I cannot catch it with “modify-services” and extend
>>> it.
>>> How would I go about extending it?
>> There is probably no convenient way now.

What about:

  (services (cons (simple-service 'my-env
                                     . ,(file-append guile-2.2 "/share/foo"))))

It seems to do the job.

> And maybe we could avoid essential-services altogether and make these
> services explicit, so that they can be modified with “modify-services”.
> Right now they are special in that they are always added to whatever
> services the user defines.

I don’t like ‘essential-services’ either, but I like that we have a
high-level ‘operating-system’ structure (in theory we could have just
one big ‘service’ structure and that’d be enough, but it’d be less
pleasant to work with.)  Not sure how to address this.



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