From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp11.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 gPzGNIiH5mG4EwAAgWs5BA (envelope-from ) for ; Tue, 18 Jan 2022 10:25:28 +0100 Received: from aspmx1.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp11.migadu.com with LMTPS id MKtCMoiH5mEPjAAA9RJhRA (envelope-from ) for ; Tue, 18 Jan 2022 10:25:28 +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 23674298A5 for ; Tue, 18 Jan 2022 10:25:28 +0100 (CET) Received: from localhost ([::1]:49852 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1n9kk2-0001QR-UB for larch@yhetil.org; Tue, 18 Jan 2022 04:25:26 -0500 Received: from eggs.gnu.org ([209.51.188.92]:43338) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n9kjh-0001QG-VP for guix-patches@gnu.org; Tue, 18 Jan 2022 04:25:06 -0500 Received: from debbugs.gnu.org ([209.51.188.43]:56078) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1n9kje-00067D-Kf for guix-patches@gnu.org; Tue, 18 Jan 2022 04:25:04 -0500 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1n9kje-0006qt-HW for guix-patches@gnu.org; Tue, 18 Jan 2022 04:25:02 -0500 X-Loop: help-debbugs@gnu.org Subject: [bug#52600] [PATCH] doc: Document (gnu services configuration). Resent-From: Attila Lendvai Original-Sender: "Debbugs-submit" Resent-CC: guix-patches@gnu.org Resent-Date: Tue, 18 Jan 2022 09:25:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 52600 X-GNU-PR-Package: guix-patches X-GNU-PR-Keywords: patch To: Xinglu Chen Cc: Ludovic =?UTF-8?Q?Court=C3=A8s?= , 52600@debbugs.gnu.org, Maxim Cournoyer , Andrew Tropin Received: via spool by 52600-submit@debbugs.gnu.org id=B52600.164249786426289 (code B ref 52600); Tue, 18 Jan 2022 09:25:02 +0000 Received: (at 52600) by debbugs.gnu.org; 18 Jan 2022 09:24:24 +0000 Received: from localhost ([127.0.0.1]:48981 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1n9kj1-0006pu-Ki for submit@debbugs.gnu.org; Tue, 18 Jan 2022 04:24:23 -0500 Received: from mail-4317.proton.ch ([185.70.43.17]:18430) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1n9kiz-0006pg-3H for 52600@debbugs.gnu.org; Tue, 18 Jan 2022 04:24:21 -0500 Date: Tue, 18 Jan 2022 09:24:13 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lendvai.name; s=protonmail3; t=1642497854; bh=7f42WbWDO/ctmYep9j47kdb/IUnVMc8vMjiQC1sWm4E=; h=Date:To:From:Cc:Reply-To:Subject:Message-ID:In-Reply-To: References:From:To:Cc; b=pdKPrCMj+MkfcFZm2GXJc1FM8CTwSW/ip+/ExIrSAABR2vp46uLu7rkMoAPv7xGO5 J5sHfY/Dg4Tlmg4tnaZMB9EEAxa+QdtEK2n9QCZ5NjtuqRyBBkZEWykn56ws2veLaZ ZR/EoIrHVawIT6jM89L6Cn1RE7Y4ow5GnfqhErlWNvnhwZykEfUwUjduO0P3Q3e+FQ Zix3GH0XRsgVu///idrzUjFy/jbcMar4wOlj8Tui4VaSrPeGfATHsoYaanqGY7Dnfp XWdtbrUgbSZqs30O3g0IwGH0LFU+qTmjZROm+s0OfIkUUmefbAAEUmmYlg1dxpswSn PYnlNEtjD8Ykg== From: Attila Lendvai Message-ID: In-Reply-To: <87a6grcwh7.fsf@yoctocell.xyz> References: <665c4d2070de80af1d3594a268f0f6d3fb596d15.1639839498.git.public@yoctocell.xyz> <877dbwz3r7.fsf@gnu.org> <87ilvfd2lx.fsf@yoctocell.xyz> <87a6grcwh7.fsf@yoctocell.xyz> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: guix-patches@gnu.org List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Attila Lendvai Errors-To: guix-patches-bounces+larch=yhetil.org@gnu.org Sender: "Guix-patches" 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=1642497928; h=from:from:sender:sender:reply-to: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:resent-cc: resent-from:resent-sender:resent-message-id:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; bh=7f42WbWDO/ctmYep9j47kdb/IUnVMc8vMjiQC1sWm4E=; b=gnU1T1hR8N1htf3Wh4GPjEoT6c+sFRk4DZwpll6AwaVSThoKpfHKZHQXOPgcprEj/U6ced 9BjSTLCPrNlowOVd33Pd4vFjH3d8PyocKrHbAgPSwajZU2MKoYG4JzWDcsHRJ0JVavvMC8 ZWAXZl1pkbE4yLUufSCXW6yPecPdnxGV+b1zJ13nzkAlOQ+u8zOmgJ7R1p6WsbawKM68xN p/o0K4nl/+kgzF3UNJgWkdn3vGIr7PwGI28OrzoDvjgGutn27K/DvKbe+WnQwEuKLSCJHO LRdx2TpEaFceLoSmpHp3pgMglPDf5HfmV6lOvfhDg3n8o+I+xUnI2fqVOli6AA== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1642497928; a=rsa-sha256; cv=none; b=Fieh4WgcvHT34dSECJ6wf9cevbTMW/iyDlgFdWsrjE+rcbBy1AwiT0EEsxNc25guOqNuBH NlT4aSDFQyOoKXdyXCup0UfcwKc4Rt1/BAKLE6e58J/ZhgKpbTvfNR/wYHt3EfrTWGZVqt a5Oj7wr52KBx2/PJCLM/fALI8N2VyINGh+tlaOYr1wTJiTF26PpSwXpRBvsPXpQ1+hE8wk Z5sif8u4MsirRkvWpIt79Jq9amLGTNweiQjG/0iW9yusRWrVaSUNHMTsqSGmdM5Y5asiP0 JrA5yIJmzkL9+YtlHlF79bcxDh7jEHHqY6Dp1GzvBxcPkjcHwxzg3QVvh7LHag== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=lendvai.name header.s=protonmail3 header.b=pdKPrCMj; dmarc=none; spf=pass (aspmx1.migadu.com: domain of "guix-patches-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-patches-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -0.62 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=lendvai.name header.s=protonmail3 header.b=pdKPrCMj; dmarc=none; spf=pass (aspmx1.migadu.com: domain of "guix-patches-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-patches-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 23674298A5 X-Spam-Score: -0.62 X-Migadu-Scanner: scn1.migadu.com X-TUID: CENaIe1BfZIh > I am not familiar with Guile internals, but I think that > =E2=80=98#=E2=80=99 is just a thing that the pretty-printer = prints. Maybe > we could use =E2=80=9Cproper=E2=80=9D Maybe types, like in SRFI-189[1]? > > [1]: Using https://srfi.schemers.org/srfi-189/srfi-189.html this is indeed a good idea here, thanks for drawing my attention to it! FTR, i have added guile-srfi-189 in this (not yet applied) patch: https://issues.guix.gnu.org/53317 i think Maybe and Nothing covers exactly what i need here. my plan is to get guile-srfi-189 into master, then make sure it can be used in the Guix codebase, and then prepare a patch for the configuration code that uses Nothing to represent unspecified values. -- =E2=80=A2 attila lendvai =E2=80=A2 PGP: 963F 5D5F 45C7 DFCD 0A39 -- Government means never having to say you're sorry=E2=80=A6