From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?utf-8?Q?Cl=C3=A9ment?= Lassieur <clement@lassieur.org>
Subject: Re: is using eval good style in guile?
Date: Sat, 26 Nov 2016 22:55:58 +0100
Message-ID: <87ziklx5w1.fsf@lassieur.org>
References: <20161016143347.38d8a6f2@polymos.lepiller.eu>
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	<87y41aklqp.fsf@gnu.org> <20161027195949.354cae8e@lepiller.eu>
	<87pomhse6w.fsf@gnu.org>
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	<87lgx0txz0.fsf@gnu.org>
	<c897d4ab-9f45-18af-4dce-f53258126a0f@crazy-compilers.com>
	<87h97n1iu0.fsf@gnu.org> <20161104190129.684844b4@lepiller.eu>
	<b4538183-4ee2-fffb-a2c3-96eb3323231d@crazy-compilers.com>
	<20161104231253.4b52d70f@lepiller.eu>
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	<a5516b77-aec8-393f-307a-1fd125826f38@tobias.gr>
	<87wpgg1q7s.fsf@gnu.org> <20161120134958.109870e3@lepiller.eu>
	<cb5f030f-645f-bb6d-43d5-24f4667522ba@crazy-compilers.com>
	<b8ab2d264e32fe097196722b346f1c25@lepiller.eu>
	<87ziknvnis.fsf@lassieur.org> <583824AC.5080509@goebel-consult.de>
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To: Andy Wingo <wingo@igalia.com>
Cc: guix-devel@gnu.org, Hartmut Goebel <h.goebel@goebel-consult.de>

Andy Wingo <wingo@igalia.com> writes:

> On Fri 25 Nov 2016 12:46, Hartmut Goebel <h.goebel@goebel-consult.de> w=
rites:
>
>> Am 25.11.2016 um 11:53 schrieb Cl=C3=A9ment Lassieur:
>>> I think you are looking for "eval".
>>>
>>> (define (list->define-configuration stem fields)
>>>   (eval `(define-configuration ,stem ,@fields) (current-module)))
>>
>> I'm curious: In other programming languages, using eval is regarded ba=
d
>> programming style. Is this different in guile?
>
> No.  Eval is generally bad style :)  If it can be avoided it should be
> avoided.  I think since this is a definition form, macros are the
> appropriate thing if possible (I haven't seen the larger patch).

Oh sorry for that then. The larger patch is there:
http://lists.gnu.org/archive/html/guix-devel/2016-11/msg01048.html