From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp10.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms0.migadu.com with LMTPS id ED3qCRZc/mECjgAAgWs5BA (envelope-from ) for ; Sat, 05 Feb 2022 12:14:30 +0100 Received: from aspmx1.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp10.migadu.com with LMTPS id gKeeAhZc/mFvhgEAG6o9tA (envelope-from ) for ; Sat, 05 Feb 2022 12:14:30 +0100 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id C2DE021B42 for ; Sat, 5 Feb 2022 12:14:29 +0100 (CET) Received: from localhost ([::1]:50766 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nGJ1R-0003Ej-0Z for larch@yhetil.org; Sat, 05 Feb 2022 06:14:29 -0500 Received: from eggs.gnu.org ([209.51.188.92]:50988) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nGJ0e-0003BE-ML for guix-devel@gnu.org; Sat, 05 Feb 2022 06:13:40 -0500 Received: from [2a0c:e300::1] (port=59966 helo=hera.aquilenet.fr) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nGJ0c-0000l9-EJ for guix-devel@gnu.org; Sat, 05 Feb 2022 06:13:40 -0500 Received: from localhost (localhost [127.0.0.1]) by hera.aquilenet.fr (Postfix) with ESMTP id 383A2285; Sat, 5 Feb 2022 12:13:37 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at aquilenet.fr Received: from hera.aquilenet.fr ([127.0.0.1]) by localhost (hera.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id W0uspDAdr-GP; Sat, 5 Feb 2022 12:13:36 +0100 (CET) Received: from ribbon (91-160-117-201.subs.proxad.net [91.160.117.201]) by hera.aquilenet.fr (Postfix) with ESMTPSA id 887D6193; Sat, 5 Feb 2022 12:13:36 +0100 (CET) From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: Attila Lendvai Subject: Re: using an SRFI that is not available in Guile References: <6vmHCdZdAWsjqvLgmVNEZclQ-JbdRJLfGzLNphX3EbevcslD-_TkMuHA1MwIylOfbe3DkDXYCbx5WT_Q44sC1Qed5MsBUg2xxZKhUbChGGs=@lendvai.name> <87iluhf5ci.fsf@gnu.org> <87o848aua9.fsf@gnu.org> <87ilu9rvit.fsf@gnu.org> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 17 =?utf-8?Q?Pluvi=C3=B4se?= an 230 de la =?utf-8?Q?R=C3=A9volution?= X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Sat, 05 Feb 2022 12:13:36 +0100 In-Reply-To: (Attila Lendvai's message of "Mon, 24 Jan 2022 23:02:16 +0000") Message-ID: <8735kxlg67.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spamd-Bar: / X-Rspamd-Server: hera X-Rspamd-Queue-Id: 383A2285 X-Spamd-Result: default: False [-0.10 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; TO_DN_ALL(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; MID_RHS_MATCH_FROM(0.00)[] X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a0c:e300::1 (failed) Received-SPF: softfail client-ip=2a0c:e300::1; envelope-from=ludo@gnu.org; helo=hera.aquilenet.fr X-Spam_score_int: -4 X-Spam_score: -0.5 X-Spam_bar: / X-Spam_report: (-0.5 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_PASS=-0.001, SPF_SOFTFAIL=0.665, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: guix-devel Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1644059669; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=szD2T5gX1vWU4KZgdJPNm4EdqTpud7WPnnMhqXRk9fQ=; b=uMIWiYGIjr3nhVfGlq3Ih0IQ7TZPms+dvuxnHgEFC/qV6jlbDN5Di5vWWUr4hikbcf8E9U C5xvsGVwaSKz0qvOzeeGgPUa7ABHRcYH0372btmi1H8k/p5aAES8m1HA8e0z9h4ef8C+5r KkReNUE6v4hp8v7KjzdpXS6sP79PVHdczB256S8Eu1740CHqZJu8JWMGTgKPrCCvYLYxV1 geY0DaknM03pWWqwGgSEocFvTrmjy/tF0ms2Nf3kzOm9r5xdrSBTu3WxUWvB+V5lySAQZf IqEbHI3YlZDD2cG5UoDqAajI77MhhFbKoXqYcWdTwY0k6FkxQvAfajDp8PzUOg== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1644059669; a=rsa-sha256; cv=none; b=Kk9fFGF6acGokoI2GUtc6NJuch2IYbyXLzW96HIHRd6SEbP2GsSEk8Kl9OVKCyPWceCT6F kQVkxf1QtRmyTjTxcXF+mm1fLHSmmET6QlVj5cs6u7F7bauJmc9sj2jFDRWfrUQ4Tr/07O QGCDzfYgvDm1yAfI8tyTzsK8nZfAeDo32fnR+0yMuEb+KNaC9T9idw4Eo/x9bB7WzFHmFR ym1DJ/zbhZHkWtllUF3aPIqLumXENO932L5upNvVosJwroVn5Um6AymwGBjEH7/y8rcw6k Y6/X27GZwDTRIM/nRO2TxoJZ+m9bcj+klX7cxg/0Nn5HxQa9SEM2wkbBz/jY0Q== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -4.13 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: C2DE021B42 X-Spam-Score: -4.13 X-Migadu-Scanner: scn0.migadu.com X-TUID: KTUJHbK0h09L Hi, Attila Lendvai skribis: >> Another approach would be to use =E2=80=98define-record-type*=E2=80=99 a= nd record all >> the default values, including those derived from other fields (just like >> the default =E2=80=98home-directory=E2=80=99 field of is = derived from >> =E2=80=98name=E2=80=99.) >> >> Does that make sense? > > > i think it does, but it would enforce a rather different code > organization. right now i have a function called APPLY-CONFIG-DEFAULTS > that is called at the beginning of each entry point to my service > code. it makes sure that the input config is valid, and returns a new > config object that has the defaults filled in. it has corss-referenced > local variables and even some local functions. [...] > Ludovic, you're not too happy about the use of extra dependencies > here, right? if so, can you please advise whether i can proceed with > giving srfi-189 a try and see what it looks like (i.e. it's not off > the table to get it accepted)? or do you have any other ideas? I think I just don=E2=80=99t understand yet how the needs you describe diff= er from those of the already available services. Do you have a preliminary version of the service where you think existing mechanisms are insufficient? Sometimes I find it clearer to discuss concrete cases. Thanks, Ludo=E2=80=99.