GNU bug report logs - #54293
[WIP] home: Add home-git-service-type

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From: Maxime Devos <maximedevos <at> telenet.be>
To: iyzsong <at> outlook.com, 54293 <at> debbugs.gnu.org
Cc: 宋文武 <iyzsong <at> member.fsf.org>
Subject: [bug#54293] [PATCH v2] home: Add home-git-service-type.
Date: Sat, 12 Mar 2022 11:24:52 +0100

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iyzsong <at> outlook.com schreef op za 12-03-2022 om 10:22 [+0800]:
> +         (merge-options (lambda (options) ;merge options by section
> +                          (fold
> +                           (lambda (e prev)
> +                             (match e
> +                               ((section variables ..1)
> +                                (begin
> +                                  (let ((v (assv-ref prev section)))
> +                                   (assv-set! prev section
> +                                              (if v (append v variables)
> +                                                  variables)))))))
> +                           '() options))))

Seems rather imperative.  Can this be avoided, e.g. using vhashes?
Excerpt from the manual:

> 18.5.1 Programming Paradigm
> ---------------------------
>
> Scheme code in Guix is written in a purely functional style.  One
> exception is code that involves input/output, and procedures that
> implement low-level concepts, such as the ‘memoize’ procedure.

Greetings,
Maxime.

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