From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp10.migadu.com ([2001:41d0:306:2d92::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms9.migadu.com with LMTPS id gHHOOjBq42RBXwEASxT56A (envelope-from ) for ; Mon, 21 Aug 2023 15:44:17 +0200 Received: from aspmx1.migadu.com ([2001:41d0:306:2d92::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp10.migadu.com with LMTPS id ADeAOTBq42TCagEAG6o9tA (envelope-from ) for ; Mon, 21 Aug 2023 15:44:16 +0200 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 9E17A4554E for ; Mon, 21 Aug 2023 15:44:16 +0200 (CEST) Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=trop.in header.s=gm1 header.b=ZTZldmLI; 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"; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1692625456; 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: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=oMfZkxifIR4TXcYI2TvRId65gGOHpWRnoW9IuxGSPxg=; b=CbbtIn3Mhft6hISMsctUE1JDhBpr58KP57USdi6kC4U1QwtsfDsmspIoDx2/hifT7XxK4Q VuQhY6/tlcnNIIJrfnLo/lMuBX9gprx6TYq5HLNZUoRc0waAMP6TA/S+sBrYAyn773sKKQ 2dVDeBdx+rRIeHhs/TOVBLR4yV4osfAXlNz4ZCFEyxx8rvgpz2pG9zkSwM5sLzAgUsLa52 jX4snRgQcDRw5c1SuNz4+eciUvrg2Xhg9hvNoNhF0u8eIX4uAwyfVqRvEqMbIBi3KT5mWv ySRNCp3VGyXHJnQccPu+BrWHV2xEZFsVIrw70AcAY+bT7K/m5BOqpCn5bwyaXg== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=trop.in header.s=gm1 header.b=ZTZldmLI; 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"; dmarc=none ARC-Seal: i=1; s=key1; d=yhetil.org; t=1692625456; a=rsa-sha256; cv=none; b=mrhRTz3GU6chUg4cEhGiqw5fpS/msiIxpBjtQN9E7MiVmOLbTFS5kQOAhHlM+Y8lIv7uVH Y6wXk4WV+wv3vQ37d7cOGLb+cYfXNtKUsRa+VsswXRqShiuvV5L+MtwTB7fb/sFLse/Lge 6ujkfTUSZJcWbdPmPfuU9+vF8rt4fxiTsJAE/U4CK0oAHiRRv0OghSYZ7VSGCQHSARs0Kr 3hbpjX/JNQAzSwJefLO+v/4Xb9klByAZzD6mRcthPF7lNiJIrBgsQFeBW2p2FX91hXmOUw 8gAF1BhiUWQ5y8/LPLpd458qsqqPIc3BnENiL587E/+o1lC/MWeOD1w7TpC4Tg== Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qY5CO-0001b4-1M; Mon, 21 Aug 2023 09:44:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qY5CL-0001ag-8f for guix-patches@gnu.org; Mon, 21 Aug 2023 09:44:01 -0400 Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qY5CK-0000hX-Ec for guix-patches@gnu.org; Mon, 21 Aug 2023 09:44:01 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1qY5CM-0007Yr-JR for guix-patches@gnu.org; Mon, 21 Aug 2023 09:44:02 -0400 X-Loop: help-debbugs@gnu.org Subject: [bug#65119] [PATCH 0/8] Sharing service code between Home and System Resent-From: Andrew Tropin Original-Sender: "Debbugs-submit" Resent-CC: guix-patches@gnu.org Resent-Date: Mon, 21 Aug 2023 13:44:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 65119 X-GNU-PR-Package: guix-patches X-GNU-PR-Keywords: patch To: =?UTF-8?Q?=E5=AE=8B=E6=96=87=E6=AD=A6?= , Ludovic =?UTF-8?Q?Court=C3=A8s?= Cc: 65119@debbugs.gnu.org, Ludovic =?UTF-8?Q?Court=C3=A8s?= , paren@disroot.org Received: via spool by 65119-submit@debbugs.gnu.org id=B65119.169262541829029 (code B ref 65119); Mon, 21 Aug 2023 13:44:02 +0000 Received: (at 65119) by debbugs.gnu.org; 21 Aug 2023 13:43:38 +0000 Received: from localhost ([127.0.0.1]:55876 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qY5By-0007Y8-8T for submit@debbugs.gnu.org; Mon, 21 Aug 2023 09:43:38 -0400 Received: from relay2-d.mail.gandi.net ([2001:4b98:dc4:8::222]:53825) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qY5Bv-0007Xr-I2 for 65119@debbugs.gnu.org; Mon, 21 Aug 2023 09:43:36 -0400 Received: by mail.gandi.net (Postfix) with ESMTPSA id AD1024000E; Mon, 21 Aug 2023 13:43:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=trop.in; s=gm1; t=1692625407; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=oMfZkxifIR4TXcYI2TvRId65gGOHpWRnoW9IuxGSPxg=; b=ZTZldmLIrrGTYGR7pIQFd0dq6vjSnvvGJ/FeVCgG2hWwqGqdNdzqmSq9WC/foHgZf47nvu hz8ONaGr1ff6RQ9WB65gguA03ssHFU7HiEHE/RjRDt5fd2uz9EXtfQsHPv3eMe/ChWl7T4 RiK322dZOfXjNyRNUrBxMkoIjO6qyDd30JuGy3wdhQTqjoVJH16HQduePNlkX5V40Iffq7 NaktBCtBpyzQjKEUphhdHU/7ojYsap6yrYVpnHGdemwQpSqNbR2Fd2PUeMZ6/LN61jQaGR OnSoHYwGoUEFhQHUXiLFEDNplvgDvq+aR/Gw8ZJbMsG6o0bKRT1qKpKAQjCOUw== From: Andrew Tropin In-Reply-To: <87ttt3a4tm.fsf@envs.net> References: <87ttt3a4tm.fsf@envs.net> Date: Mon, 21 Aug 2023 17:43:21 +0400 Message-ID: <87r0nwh5om.fsf@trop.in> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" X-GND-Sasl: andrew@trop.in 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: , Errors-To: guix-patches-bounces+larch=yhetil.org@gnu.org Sender: guix-patches-bounces+larch=yhetil.org@gnu.org X-Migadu-Country: US X-Migadu-Flow: FLOW_IN X-Migadu-Scanner: mx2.migadu.com X-Migadu-Spam-Score: -1.84 X-Spam-Score: -1.84 X-Migadu-Queue-Id: 9E17A4554E X-TUID: zIBfS3ttNa0A --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2023-08-13 13:28, =E5=AE=8B=E6=96=87=E6=AD=A6 wrote: > Ludovic Court=C3=A8s writes: > >> [...] >> >> This patch lets us map System services to Home and uses the new >> mechanism for three services: mcron, dicod, and syncthing. >> >> services: dicod: Remove Shepherd < 0.9.0 compatibility layer. >> services: dicod: Pre-build the GCIDE index. >> services: syncthing: Use 'match-record'. >> services: Define 'for-home'. >> home: services: Support mapping of System services to Home services. >> home: services: mcron: Define as a mapping of the system service. >> home: services: Add dicod. >> home: services: Add Syncthing. > > I didn't test them, but those changes look good to me! Hi Ludovic, =E5=AE=8B=E6=96=87=E6=AD=A6! Sorry for comming late to the party, I saw this message only a week ago and didn't have time to make an extensive reply yet, so I will share my quick thought on the most problematic part and maybe later will formulate others thoughts in more details. define-service-type-mapping looks imperative and potentially very problematic. Collecting those values in unknown order and applying this implicit transformation making a good room for foot shooting. Imagine someone would like to use his own (let's say) shepherd home service implementation and will add this to one of the source files of their channel: =2D-8<---------------cut here---------------start------------->8--- (define-service-type-mapping shepherd-root-service-type =3D> my-home-shepherd-service-type) =2D-8<---------------cut here---------------end--------------->8--- What happens if somebody will use his channel just for getting some package? Very likely it would break the build or in the worst case it will build with unexpected service implementation under the hood. I had [1][2] and still have concerns about macros and records composability and reusability. I personally don't like excessive usage of them in general. By adding more macros, already quite complex guix services mechanism becomes even more harder to learn, inspect, reason about and work with. In addition to that it has a major technical issue mentioned above. I'm strongly against this change and would suggest to revert it. I hope it doesn't sound rude and I'm really thankful for your work on this, but I just think it's not the right solution, at least yet, in its current form. [1]: https://yhetil.org/guix-devel/878rvp1deg.fsf@trop.in/T/#u [2]: https://yhetil.org/87ild88kax.fsf@trop.in =2D-=20 Best regards, Andrew Tropin --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEKEGaxlA4dEDH6S/6IgjSCVjB3rAFAmTjafkACgkQIgjSCVjB 3rBuEBAAhRuAXkJen8aGjulp58QZFqBnYjrYRFuSC//q0jsaKepGcsNA3XF+qx1l 9/GmN25g7McIkwuMWIqWJY30RMp938637ki1uBNo4zFZBSQKKyPG+LKdNk84kCQk En8TLd0r1xzt3u7Jn6BpJ41Ulx3RSxZwmhuV1Zn2E4aENkbC5IA4/m1raB6hUsy+ zsTRcrvhx13/8V4ZBLu+U6nMi9Y/8FeCXzRJkg8I2ye06zzQAvwwii5fgKfmj6/G B0g/3r21lfUREbs7xikJDluWs4HCCrIayT4B9bB3C2VUaNObVQoUjRqhapHkUFvi RmHSEfPMk7mPCE2M2sgpHOsUcLT3mgwqoF9Q72nr22qf6uDwA483f2ksKR1O6Ul9 Z2z6kE/r86Y1BbCd1rVJohcretu5wDYbQoWVPATHZoCCBath/4BCqvWqqLCOEm/X dF8bv3vuv3wCbfK8DxY7G4CeymlJivCBcp275s74DTkdKUqEPthSe3pddEXJfI1z jEmXjRaIu/kfiGgSDy7AtL4pQESl9StABtnzNFIoVOTLvS+ckZV/KEkrfOS0N7kf ej+PsPhCc/3q0Q5KwrjuMj46kv+/8+FXwHbW5rR6RLiKDKuLn7qYySFukF6UJ871 qqDMGU5401Rpf7a/QLhE8fohpL6eiWDv9nwXqbyg20+cCWfyeV8= =Xiui -----END PGP SIGNATURE----- --=-=-=--