From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp1 ([2001:41d0:2:bcc0::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms0.migadu.com with LMTPS id +Le1Eu4WYGEI4QAAgWs5BA (envelope-from ) for ; Fri, 08 Oct 2021 12:01:18 +0200 Received: from aspmx1.migadu.com ([2001:41d0:2:bcc0::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp1 with LMTPS id aPheDu4WYGEmcwAAbx9fmQ (envelope-from ) for ; Fri, 08 Oct 2021 10:01:18 +0000 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 8AE89164CD for ; Fri, 8 Oct 2021 12:01:17 +0200 (CEST) Received: from localhost ([::1]:46586 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mYmgm-0001Bh-Kh for larch@yhetil.org; Fri, 08 Oct 2021 06:01:16 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54918) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mYmgY-00019n-Rq for guix-patches@gnu.org; Fri, 08 Oct 2021 06:01:02 -0400 Received: from debbugs.gnu.org ([209.51.188.43]:37657) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mYmgY-0008Cz-Hx for guix-patches@gnu.org; Fri, 08 Oct 2021 06:01:02 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mYmgY-0002O2-Dj for guix-patches@gnu.org; Fri, 08 Oct 2021 06:01:02 -0400 X-Loop: help-debbugs@gnu.org Subject: [bug#50967] file-like objects instead of gexps Resent-From: Andrew Tropin Original-Sender: "Debbugs-submit" Resent-CC: guix-patches@gnu.org Resent-Date: Fri, 08 Oct 2021 10:01:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 50967 X-GNU-PR-Package: guix-patches X-GNU-PR-Keywords: To: Ludovic =?UTF-8?Q?Court=C3=A8s?= Cc: Oleg Pykhalov , Xinglu Chen , 50967@debbugs.gnu.org Received: via spool by 50967-submit@debbugs.gnu.org id=B50967.16336872329107 (code B ref 50967); Fri, 08 Oct 2021 10:01:02 +0000 Received: (at 50967) by debbugs.gnu.org; 8 Oct 2021 10:00:32 +0000 Received: from localhost ([127.0.0.1]:49200 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mYmg1-0002Mn-OM for submit@debbugs.gnu.org; Fri, 08 Oct 2021 06:00:32 -0400 Received: from mail-lf1-f42.google.com ([209.85.167.42]:33778) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mYmfx-0002MW-33 for 50967@debbugs.gnu.org; Fri, 08 Oct 2021 06:00:28 -0400 Received: by mail-lf1-f42.google.com with SMTP id j21so19100639lfe.0 for <50967@debbugs.gnu.org>; Fri, 08 Oct 2021 03:00:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=trop-in.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:in-reply-to:references:date:message-id :mime-version; bh=RlTIhsCoSRUagLa/JUvz8ho0zzOr+tmWlNOOBQb9NqU=; b=cDGW6jsRTJwIj3oLv5tNfPSYcvoTKKXmFd1IUp6CmqfSWZwkr78Yb5EXz3cR1k6crt qSNT47Kv18Za2pwFNEfvNIOB5kh0RL6SuFi3MBNFBrH0au7kCk6b76iYHXlOhAbijI++ s57xsbPIB+a5HflFOi3t3voO26UXDRmQnhQfZYlCFusphXIjpZ45sw+g4K1eI7+6ADSh NDNSSOy4qUXtHlFcU9Ble66hKUYFjK/4ShcXKkgc6aOyCrYYSrDXZOVrTTmTznb6kA12 wBu17ZixoxdggPUogUcuGnXlO8DvZwQD6sSkiVeLG1xhPTGOgPidKea30WWagowNKgUp rvQA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references:date :message-id:mime-version; bh=RlTIhsCoSRUagLa/JUvz8ho0zzOr+tmWlNOOBQb9NqU=; b=RSIElPBbJlOCY9b1zdV6dQTegMZO2fsdntrev+1nhmTqDPP0ub68yVfa+SSzpcBQj8 Yn5fhq4XApjy617GdTQ/ZhMVS6FI/dFT4blSeS0IVmxcL7QHfRWHnr5cJOAFdSnIlnPY 3ygmQAoh3LpbmSZQCElp/DSVeFUR6dxanhxnOfp4T5jI6VEwyRUWQItN90vwYywp2ZNA oNV8p5ZI5OO8waTCjYiPVGJY1wZ23iA+tGN9a4ISk9nvf/GLILkzo61ab8MOO1oN24QX lMpYe5VBY+iSANV5i/jEehfMO5lwX0mcISaX/bEKt9ppmW/6VQiEMf0v5PhbtVvwozBz /0rQ== X-Gm-Message-State: AOAM531UnSTZGCTuluYdrTuzVWfn/QGRa3MxY9ZCO7UGNySWzsOIWgyF 4SYal5UltLUJBGwyPSPdAMOj9g== X-Google-Smtp-Source: ABdhPJxnGkQUV9c+vtOt7+kLPxL8/wiROmgDL3vX+MtklPnhkjaiylp3FKmANY7ybcaqH6Xmj9esuQ== X-Received: by 2002:a2e:534a:: with SMTP id t10mr2594274ljd.407.1633687218629; Fri, 08 Oct 2021 03:00:18 -0700 (PDT) Received: from localhost (109-252-140-132.dynamic.spd-mgts.ru. [109.252.140.132]) by smtp.gmail.com with ESMTPSA id v11sm202610lfi.204.2021.10.08.03.00.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Oct 2021 03:00:18 -0700 (PDT) From: Andrew Tropin In-Reply-To: <87a6jk54ro.fsf@gnu.org> References: <20211002163834.29583-1-go.wigust@gmail.com> <20211002163834.29583-13-go.wigust@gmail.com> <87pmsnnukj.fsf@yoctocell.xyz> <878rz8q42z.fsf_-_@gnu.org> <87czoilgbg.fsf@trop.in> <87a6jk54ro.fsf@gnu.org> Date: Fri, 08 Oct 2021 13:00:14 +0300 Message-ID: <87ily7hm4x.fsf@trop.in> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" 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" X-Migadu-Flow: FLOW_IN ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1633687277; 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=RlTIhsCoSRUagLa/JUvz8ho0zzOr+tmWlNOOBQb9NqU=; b=ZxFtGldIPndjiIWxS2W2L8hY/WJ30Z5U/tD+lB62q3Fe44RVn5wqG2gdQrcbmGkHy75zmF QufDhqWceKbrDzCLihi3ip7X5PAdFDU5cqe9A4C/TskRMUmNIJr2ikOfg76ogOiT/1FKqU /OraBR1lm00DFeTSKMhdpcyyZ0wWB3GA6NNpoDDwe+6Tg14RbHbq1cYFVjH/vLFkbiCWDj vSdqVsQciBN2+6pDQQXi+sPKu+G6VrH5rP+VXvxO7uHwQWDWhbq4zQoxEjj6P9hvy8jrj5 Uv228EEC8Fbnk++sye7CS8qhhyNu/XAaYBz8/96NcIj2PD93DHwYguqSMgdnZQ== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1633687277; a=rsa-sha256; cv=none; b=om0gEkvNxsM9/SahnOiLjeg+WOfYjFCA8sLnCPWnyUMOE//fTK7iEvaCEC/vA3y2Nch2R9 6R6N1+4eUNSvLryGo8U547nWReZ2hi9jJpno+G4LpYNOR5RNaRnkiKTY03zx8yGyUE9q0/ vvR41Ot25wYWhnqCttCQKX+uWcecJIoz4SHMw9lVSa3/QjV71ZBwLlQhahz4OP5oWsw++C oWAgSV2EhvH0Wg3kjZjM0dU+UO5HVdmtRlmqoMJ85+9RYz7cYYg9WiOHT71AC9Pica4gmF wvu9YwSQUovW3LeEk77WXLUfued6jtuJjRhxyCI5BSZnrv6X8PQ0u/j4wQpl6g== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=trop-in.20210112.gappssmtp.com header.s=20210112 header.b=cDGW6jsR; spf=pass (aspmx1.migadu.com: domain of guix-patches-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-patches-bounces@gnu.org X-Migadu-Spam-Score: -0.91 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=trop-in.20210112.gappssmtp.com header.s=20210112 header.b=cDGW6jsR; dmarc=none; spf=pass (aspmx1.migadu.com: domain of guix-patches-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-patches-bounces@gnu.org X-Migadu-Queue-Id: 8AE89164CD X-Spam-Score: -0.91 X-Migadu-Scanner: scn1.migadu.com X-TUID: 58OylsAOFGyx --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2021-10-08 09:56, Ludovic Court=C3=A8s wrote: > Hi Andrew, > > Andrew Tropin skribis: > >> On 2021-10-04 16:04, Ludovic Court=C3=A8s wrote: >> >>> Xinglu Chen skribis: >>> >>>> On Sat, Oct 02 2021, Oleg Pykhalov wrote: >>>> >>>>> * gnu/home/services/configuration.scm (interpose): Include content of= files. >>>>> (string-or-gexp?): Rename to 'file-or-string-or-gexp?' and check for = file-like >>>>> object. >>>> >>>> I would call it =E2=80=98file-like-or-string-or-gexp?=E2=80=99, just = =E2=80=98files=E2=80=99 doesn=E2=80=99t >>>> really make it clear that it should be a =E2=80=9Cfile-like object=E2= =80=9D. >>> >>> As a matter of API, I would make it monomorphic: accept a file-like >>> object, period. This is what=E2=80=99s done for System services (and >>> polymorphic APIs are rare in general in Guix). >> >> At least some of system services are far from ideal, recently I tried to >> add rtmp section to nginx configuration using nginx system service. > > I agree that nginx config is problematic: > > https://issues.guix.gnu.org/37388 > > But IMO that=E2=80=99s off-topic. :-) > Even not taking into account that ngixn-configuration is not ideally implemented, probably it still relevant: 1. Highlights the problem of current service configuration implementation approach with records: we will need to mimic the whole underlying configuration language with records, for some small languages it's possible, but in general it's very thankless job, which also force use to keep an eye on upstream configuration language, possible extensions to it and keep our implementation in sync. In addition to that in most cases provided set of nested records requires destructuring and custom serialization code. Other system services also affected by this issue. 2. Usage of separate config-file fields with file-like object values is problematic: For nginx service it substitutes the whole file, for tor service it will be inserted at the end of the file for service X it will be inserted at the middle. Using a slightly different approach, implemented in many home services we get ultimate configuration flexibility, we don't need to handle existing file as some special case, create a separate field for it and wonder where it should be inserted, when provided. I'll provide more details in a separate thread, but for now just take a look at too implementations of sway services using both approaches: https://notabug.org/jbranso/guix-config/src/master/sway-service.scm#L110 https://git.sr.ht/~abcdw/rde/tree/master/item/gnu/home-services/wm.scm#L33 >> Imagine the following use case: I want to create a home service, which >> accepts a package (zsh plugin) and adds a code for loading this package >> to zshrc, currently it's implemented like that: >> >> https://git.sr.ht/~abcdw/rde/tree/69dd2baf0384c899a4a4f97bdac8bf0b6e499b= 82/item/gnu/home-services/shellutils.scm#L18 >> >> Exteding the service above with `(list zsh-autosuggestions)` will add >> the following line to zshrc: >> >> source /gnu/store/w7d43gk1qszplj9i0rkzqvzz6kp88qfm-zsh-autosuggestions-0= .7.0/share/zsh/plugins/zsh-autosuggestions/zsh-autosuggestions.zsh > > OK. > > Then that=E2=80=99s fine: you can have special code that emits those =E2= =80=9Csource=E2=80=9D > lines in .zshrc while still allowing users to provide their own > file-like object for .zshrc lines they want to add. Again, see how > =E2=80=98torrc=E2=80=99 is generated in =E2=80=98tor-service-type=E2=80= =99. From=20what I understand you want a separate bashrc-file, bash-profile-file and bash-logout-file fields to be present, but where the content of those files should be inserted? At the beginning/end or instead of the rest of configuration? We already can achieve the same result by providing gexp, which will read the content of the file-like object, a very small helper for that (slurp-file-gexp) makes it even easier to do. Such approach is more flexible and doesn't seem much harder. I remember that you had concerns about slurp-file-gexp, but still don't understand what exactly you are concerned about. > > I=E2=80=99m happy to discuss specific service examples in mode details if= you > want. Overall, I=E2=80=99m confident Home services don=E2=80=99t require= any pattern > that=E2=80=99s not already found in one of the many System services. :-) > > HTH, > Ludo=E2=80=99. I'll write a few examples of service configurations and rationale behind the design descisions for that next week, to make the discussion more practically oriented. =2D-=20 Best regards, Andrew Tropin --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEKEGaxlA4dEDH6S/6IgjSCVjB3rAFAmFgFq4ACgkQIgjSCVjB 3rC1CQ//SfnqHSBc7BYNk2QKH6JXmnYOTJCv3Lw1dpBjn3aQ5DNKHMeeW0QgdTVr x7CbXbtdesia0VE5ZH7KuZ7QqW0FIJ3TCDPPQIB0ky2jZKqobJwhdyGdN4fBFpWy QK6BgPYgKkYUTaczgt+E7LMfjIfbUnZ5hjInqTUTD4CZWzHHLGzcX1ngaWPLmtkq XFRdjD6XFGleAkpg2i0Gi4dZAXFU/HmpBCWo2sBzFzy53FGOwzdTwVUffGwMMLcV F6UeBSKNF65mtqBN5P8eK9w86uKCKhL0mX+v7UtoSFeHShvop8+GRET6mlSaeoc5 Fl75TT+NMMQknORMw3cPAWSiS+HuJQTWbP8X1aEOEbKt4H2RoZKo30tZJETRdM3G qAxPeLJBzRoe0xPjupmNEws7Dca58CAsuYRGJu2Eb8sQ2LH7kXJV4oryybWny+n4 deRESz1MdsCUKYb5ze0xI3hfSr/H/rzA+B+94WnA6ZYBdfjXVQugnQ5md3kb3XQl Q3YTu930b8P86c9JR1TSoK+6+k9zLUup+4jKLngJKLSjdpWnmEAG57siKTLufqJb u7sxVMtHdKTIl902aBP1ymaiIk/k5AfAzntACAJSjbUg3kwHl+TPFZXFDBSRQobI nqvA2yNvIaoYKbVVDTiuTiCt2vtIEmcPYA5ELz8C53JwRkrUzZA= =tmb8 -----END PGP SIGNATURE----- --=-=-=--