From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp10.migadu.com ([2001:41d0:2:bcc0::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms5.migadu.com with LMTPS id kI3/BWh7tWKrEwEAbAwnHQ (envelope-from ) for ; Fri, 24 Jun 2022 10:52:56 +0200 Received: from aspmx1.migadu.com ([2001:41d0:2:bcc0::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp10.migadu.com with LMTPS id YO4LBWh7tWKs9wAAG6o9tA (envelope-from ) for ; Fri, 24 Jun 2022 10:52:56 +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 B7CC6428A9 for ; Fri, 24 Jun 2022 10:52:55 +0200 (CEST) Received: from localhost ([::1]:55056 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o4f3e-0005Kr-QX for larch@yhetil.org; Fri, 24 Jun 2022 04:52:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40444) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4ejb-00032F-D8 for guix-devel@gnu.org; Fri, 24 Jun 2022 04:32:11 -0400 Received: from andre.telenet-ops.be ([2a02:1800:120:4::f00:15]:50642) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1o4ejT-00069R-Mz for guix-devel@gnu.org; Fri, 24 Jun 2022 04:32:10 -0400 Received: from ptr-bvsjgyhxw7psv60dyze.18120a2.ip6.access.telenet.be ([IPv6:2a02:1811:8c09:9d00:3c5f:2eff:feb0:ba5a]) by andre.telenet-ops.be with bizsmtp id mwXz2700K4UW6Th01wXzYk; Fri, 24 Jun 2022 10:32:00 +0200 Message-ID: <29ca09232b6f9d7efcf820bb142f78d8288e0fe0.camel@telenet.be> Subject: Re: Experimental nar-herder support for serving fixed output files by hash From: Maxime Devos To: Christopher Baines , guix-devel@gnu.org Date: Fri, 24 Jun 2022 10:31:55 +0200 In-Reply-To: <87o7yilbnd.fsf@cbaines.net> References: <87o7yilbnd.fsf@cbaines.net> Content-Type: multipart/signed; micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="=-p140JwJSZN3fV8R4DID7" User-Agent: Evolution 3.38.3-1 MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telenet.be; s=r22; t=1656059520; bh=ws25ObWreEK7vSozta/u0cGKJFrciaIl6bLEHrpbbZE=; h=Subject:From:To:Date:In-Reply-To:References; b=DFkQZKnKkH8oq45LxGn8WmYC6dqv/hBUl6QPieL4kQifP0r1oIKka+ac9qktlgZTX oPAhtfYaxKvto/5PAeRuLMzwVZA9E+VryvaNOpRtUnc+Bze5w4pk6VLGciJCyVMTCP BqDjPr/onKFbMR+CR2dFvgr7CLLixdeotcuiuJNCuIs+oX5pIVcPjZM8f9AsU2eFMU YQFOHnQ66+OpNgL+wRVelAnN0OPAL9gQfC39dRFFm+LwJXW0RLzR3PFQzyoIFImTvX 0p4hQJKUOseOOEpjCmILK82spq+Tj2CMW7B38WwDwYjCw5H0c4MBXVAV7oCDkYku6h XQ+Eoaio189BQ== Received-SPF: pass client-ip=2a02:1800:120:4::f00:15; envelope-from=maximedevos@telenet.be; helo=andre.telenet-ops.be X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: , Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-To: larch@yhetil.org X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1656060775; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; bh=ws25ObWreEK7vSozta/u0cGKJFrciaIl6bLEHrpbbZE=; b=pOTjqWvaIdJbiNtoyCD/VMI2ABkf8pRXw0kxIKvhTjrH5F+7/0qaBnb4zH5qYFFf2ejaBt CogVZLmTnU7NSOS0gIj88T1qlepCjsQ7ULw3PyGm5kVD4GN4qNiZLsnYv9v8RbnbrqYZ+N p93LmKxe23JPC/NOC8uCYayOkRjl49BU6EFM9/e6VOvZKncnaozAdmvZqODk/1ntBm0BHt XhkVTfs8KDhFsFFEXb7xel0qhUVdIzElwqoCosEXhb+5sSvhKtIXlK79zwDSpOooxAcQ04 cOuixwg6tnT1AYuSgDbW3fBHso8/3HY2nvB9BOFJTGuTHJIhIi+FAzDlAWerOg== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1656060775; a=rsa-sha256; cv=none; b=NBUxvd8eqUJmy7bnvjfEMbFl1EScmyAudaYbAVKSRNrM+Ook/hqgEb5zEQyeFJGsfkXU9j SVnr7vHInZat0wAMZk5FVU6CXgbwde+VS3GORLcmoVd4dlntalcOvtyWLTybtz0wczUHka hWmfZUACDsmtB2/Kqs7HVh+y0uo3MmAzhkKgLSgNkgbg5U+VjQkZBrxnanKC83SrlUa1op 7hGjFCQwTlphqQNVAg+eaMrJDIMc4wemDCazAvthmEELgdTOLl0Ht+CCRF4gMy6H4/5z7p ynpxcICONmsfkxdfJ+W2iL+dnpVSM3Mw6yXkpYRj2byK3dda+ZU+YZx1iPjOOQ== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=telenet.be header.s=r22 header.b=DFkQZKnK; dmarc=pass (policy=none) header.from=telenet.be; 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: -11.16 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=telenet.be header.s=r22 header.b=DFkQZKnK; dmarc=pass (policy=none) header.from=telenet.be; 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: B7CC6428A9 X-Spam-Score: -11.16 X-Migadu-Scanner: scn0.migadu.com X-TUID: 0qnRIKezjTDC --=-p140JwJSZN3fV8R4DID7 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Christopher Baines schreef op vr 24-06-2022 om 09:10 [+0100]: > [...] > In terms of next steps, there's some things to do with improving the > implementation, but it would be good to hear if this is actually > worthwile? I wouldn't know about the Guix part, but supporting streaming reading responses in Guile(-Fibers) sounds useful outside Guix as well. IIRC, at some point in the past, I tried doing some streaming of reading responses (or was it writing responses?) and it didn't work out ... I'm not sure what =E2=80=98this=E2=80=99 refers to here: supporting fixed-o= utput derivations in general, or improving the implementation? I don't know the answer on the latter (except for a generic less memory/latency =3D good answer), but I'd like to say that ci.guix.gnu.org's support for fixed-output derivation makes it effectively acts like a mirror for all source code used in Guix, so I'd like to keep that behaviour (*). (There's always SWH, but avoiding a single points of failure would be nice ...) (*) I don't know if a lack of support for fixed-output derivations in nar-herder would affect this ... Greetings, Maxime. --=-p140JwJSZN3fV8R4DID7 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iI0EABYKADUWIQTB8z7iDFKP233XAR9J4+4iGRcl7gUCYrV2exccbWF4aW1lZGV2 b3NAdGVsZW5ldC5iZQAKCRBJ4+4iGRcl7jjKAP4wCISlpAodvU5gGlPtiPKkFqPZ 3sh6wIYUJ7gTLuVBaAD/do9CmwbFC/2TdLJwAOik3RKObvZ9VffJ42Fscl39vwA= =xeLr -----END PGP SIGNATURE----- --=-p140JwJSZN3fV8R4DID7--