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Sun, 17 Sep 2023 03:01:55 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1qhln7-00074I-Vw for guix-patches@gnu.org; Sun, 17 Sep 2023 03:02:02 -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: Sun, 17 Sep 2023 07:02:01 +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: Ludovic =?UTF-8?Q?Court=C3=A8s?= Cc: 65119@debbugs.gnu.org, =?UTF-8?Q?=E5=AE=8B=E6=96=87=E6=AD=A6?= , paren@disroot.org Received: via spool by 65119-submit@debbugs.gnu.org id=B65119.169493410827146 (code B ref 65119); Sun, 17 Sep 2023 07:02:01 +0000 Received: (at 65119) by debbugs.gnu.org; 17 Sep 2023 07:01:48 +0000 Received: from localhost ([127.0.0.1]:48946 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qhlmt-00073m-HD for submit@debbugs.gnu.org; Sun, 17 Sep 2023 03:01:47 -0400 Received: from relay1-d.mail.gandi.net ([2001:4b98:dc4:8::221]:35575) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qhlmo-00073W-67 for 65119@debbugs.gnu.org; Sun, 17 Sep 2023 03:01:46 -0400 Received: by mail.gandi.net (Postfix) with ESMTPSA id 46887240006; Sun, 17 Sep 2023 07:01:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=trop.in; s=gm1; t=1694934088; 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=nMxj/ppAGv/TrqawVU3bEKtie3w8WXAehKdr0hq2rGE=; b=OsV2c4gnWTrO3t9gkeoP1aUwm2mZfzLG/pExSVIgEu3ViOIagpwt8wyiIeIerTqW2mw4rp quO4hnlDzerrzBsYLe9/bS8lq80lj5fyD0a+XINxeWS8tUZzP+oGOeU9MIyMTeJouOOt/9 TsIlKccaaRT/7bGhlxofIK9h/Vg+jXbx6wUG40c+qHm/1CytuwHZxDAU3uj2itT3vGAHgW 0FOw4ETLgYSD0ILadIGc7wlDXTMWrrmtpkWhKyE57ajT4kJ9oUnl/MjkN5VSRclLlHG2h2 kNtIpz+A9kLsVk/gvIf9NnLXH5RYUCGarEgg2/J/qtilUZPT/a0vkffCFffGnw== From: Andrew Tropin In-Reply-To: <87led9lufr.fsf@gnu.org> References: <87ttt3a4tm.fsf@envs.net> <87r0nwh5om.fsf@trop.in> <87jztn3uz1.fsf@gnu.org> <87ttsnoct1.fsf@trop.in> <87wmx0z4u4.fsf@gnu.org> <874jk3sk57.fsf@trop.in> <87led9lufr.fsf@gnu.org> Date: Sun, 17 Sep 2023 11:01:12 +0400 Message-ID: <87msxlxozr.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-Flow: FLOW_IN X-Migadu-Country: US X-Migadu-Scanner: mx1.migadu.com X-Migadu-Spam-Score: -2.61 X-Spam-Score: -2.61 X-Migadu-Queue-Id: 7EC5D58D4F X-TUID: kbCpbwW3J9A8 --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2023-09-13 21:55, Ludovic Court=C3=A8s wrote: > Andrew Tropin skribis: > >> 1. One of the possible options is to use free-style configurations for >> services, so we can reuse a lot of code and drastically decrease >> duplication (only the service definition itself and a one configuration >> record) and maintanance burden. > > We=E2=80=99ve had this discussion before; in the case of key/value-style > configuration, I=E2=80=99m against =E2=80=9Cfree-style configuration=E2= =80=9D (nginx > configuration is a bit different). > > With free-style configuration (I assume you have alists/sexps in mind), > you might end up generating invalid config files, or get obscure error > messages, or whatever; I=E2=80=99ve used Gnus for decades (!), any Gnus u= ser > will know what I mean. This is Scheme, not Emacs Lisp/Common Lisp. > > [...] > >> 2. Another option is to rethink service extension mechanism a little bit >> and maybe make it more polymorphic. >> https://lists.sr.ht/~abcdw/rde-devel/%3C87sg56g97i.fsf%40trop.in%3E > > I very much support experimentation in this area; I=E2=80=99m sure there= =E2=80=99s room > for improvement (like Julien=E2=80=99s extension points, which you referr= ed to > in the message above). > > I=E2=80=99m not sure how that relates to factorizing Home/System services= though. > > [...] > >> My point here is: let's solve this issue on another level of >> abstraction, by improving service extension mechanism, not by creating a >> new level of abstraction (as we did in rde or in this patch series) to >> cover the wholes in the previous level. > > Do you have ideas on how you=E2=80=99d change service extension to support > Home/System factorization? > I'll write an example to demonstrate the high-level idea: We have =2D-8<---------------cut here---------------start------------->8--- (extensions (list (service-extension account-service-type (const %dicod-accounts)) (service-extension shepherd-root-service-type dicod-shepherd-service))) =2D-8<---------------cut here---------------end--------------->8--- We can do =2D-8<---------------cut here---------------start------------->8--- (home-environment (services (list (service dicod-service-type))) (service-mapping `((,shepherd-root-service-type . ,home-shepherd-service-type) (,account-service-type . ,ignore-service-type)))) =2D-8<---------------cut here---------------end--------------->8--- Now you can use the same service type and configuration record in both operating-system and home-environment and use/ignore/interpret the configuration fields values based on the environment we are building this thing for. Of course service-mapping default value can be generated upfront and stored in %guix-home-service-mapping or something like that. This way we will get rid of almost all home- services and related configurations. Keep in mind that it's a raw idea, not a well-designed solution yet. >> I would be glad to cooperate on this and design possible improvements. > > I interpret this sentence as you suggesting that you=E2=80=99re outside t= he > project=E2=80=94even though my perception is that you=E2=80=99ve been par= t of it for > some time, even before you got commit rights. So do feel at Home! > (Pun intended. :-)) My point was that rde home and system services are not affected much by code duplication due to factorization through free-style serializers and this problem is low priority for me at the moment. However in long term the proper solution would be benefitial for both guix and rde. The reason I'm suggesting to revert this patch series is because it feels to me as a partial solution on the wrong level of abstraction, which cures the symptoms and also introduces shortcomings and potentially makes it harder to introduce a proper solution in the future. If this problem is urgent/demanding for you, please invite me for working or collaborating on the solution explicitly, I plan work on it anyway, but probably not earlier than the next year. I catched this thread accidentially BTW, thanks to =E5=AE=8B=E6=96=87=E6=AD=A6 for CCing m= e. =2D-=20 Best regards, Andrew Tropin --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEKEGaxlA4dEDH6S/6IgjSCVjB3rAFAmUGpDgACgkQIgjSCVjB 3rBi3A//W2L5/mk67cXgCfnk9tgCPtPuhZIH+FBx2EwKG9Bncq/d6cgkTKt2x/Ye 67YBY+oacunl6ND2OIoEUyk5JQsiAmLIaefFVRNPCKYr8cAnxDnVM8oPL20flMcK b8rhi1uVFWyjUpp5WhaXwj+yTr2qxbSTNww5rDhLsoQVQNgVcJCvgUn2Deyx/PsJ U+Sam32hs1WK+YroWaok+80RcCGJvjavg5mY4k8eNBzl+Cytqazc01116nRf9J7v LHwDPJvVnUZGvbsBGmMTAQOu/Dy1fGDKEvogfAYBoNJT+U5goY+DJTcMgZXVZkes e0V6t5KsYkNJS4vkuSBuJDFtaONQsM7Fbd3ZoacEfa028Uq/dCvP0arMyJ/iyiHf E93fcQUBNYCV2LJxJHAMfoP3/Zm0Yw2COMcrLsckrCsfgnsNYagPSfqp1+k/q+AJ KnU3AduoGTAl92lXAUA5OdA6WkyJAjV31Ugp2AG4oK8uTduIip+RMMsIVNYELjqE iyshDeBsqWVieDhpzjceSz0I1PoH9bF+HxcPDppqsq50eTvYn9H0SAPbgpPUab/T NYvhH/g6SL1sPO4BO09lubby/P7bvGsdb6u4G6l/Ssm8RasMH/NA/dfjUQAvRm32 PRrWD8/SfESAcsbUqGATr8+A7pixZ1LCA5Uz4Asd55lDasp2r/Y= =TXaR -----END PGP SIGNATURE----- --=-=-=--