GNU bug report logs - #41785
[PATCH] DRAFT services: Add 'hurd-in-vm service-type'.

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From: Ludovic Courtès <ludo <at> gnu.org>
To: Mathieu Othacehe <othacehe <at> gnu.org>
Cc: 41785 <at> debbugs.gnu.org, "Jan \(janneke\) Nieuwenhuizen" <janneke <at> gnu.org>
Subject: [bug#41785] [PATCH v3 2/2] services: Add 'hurd-vm service-type'.
Date: Sat, 13 Jun 2020 16:35:04 +0200

Hi,

Mathieu Othacehe <othacehe <at> gnu.org> skribis:

> +(define-syntax-rule (maybe-with-target image exp ...)
> +  (let ((target (image-target image)))
> +    (if target
> +        (with-parameters ((%current-target-system target))
> +          exp ...)
> +        (begin
> +          exp ...))))

I think you don’t need the ‘if’ here.  But then maybe you don’t need the
macro either since you can always write:

  (with-parameters ((%current-target-system (image-target image)))
    …)

Anyway, all this looks great to me! :-)

Ludo’.

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