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[72.10.141.243]) by smtp.gmail.com with ESMTPSA id c20sm3819167qtj.29.2021.01.28.10.43.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Jan 2021 10:43:44 -0800 (PST) From: Maxim Cournoyer To: Ludovic =?utf-8?Q?Court=C3=A8s?= Subject: Re: Building Guile with =?utf-8?B?4oCYLWox4oCZPw==?= References: <87r1mgf19s.fsf@inria.fr> <877do7gw4i.fsf@netris.org> <87im7qfhfe.fsf@gmail.com> <87sg6lnq0j.fsf@gnu.org> Date: Thu, 28 Jan 2021 13:43:43 -0500 In-Reply-To: <87sg6lnq0j.fsf@gnu.org> ("Ludovic =?utf-8?Q?Court=C3=A8s=22'?= =?utf-8?Q?s?= message of "Thu, 28 Jan 2021 14:35:08 +0100") Message-ID: <87wnvwyk9s.fsf@gmail.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2607:f8b0:4864:20::72a; envelope-from=maxim.cournoyer@gmail.com; helo=mail-qk1-x72a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Guix Devel Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-Spam-Score: -0.25 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gmail.com header.s=20161025 header.b=sZ0GvlOK; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of guix-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-devel-bounces@gnu.org X-Migadu-Queue-Id: 524CD9403EA X-Spam-Score: -0.25 X-Migadu-Scanner: scn1.migadu.com X-TUID: 6O6nfyIJ4xjs Hi, Ludovic Court=C3=A8s writes: > Hi Maxim, > > Maxim Cournoyer skribis: > >> Mark H Weaver writes: >> >>> Hi Ludovic, >>> >>> Ludovic Court=C3=A8s writes: >>> >>>> As the saying goes, =E2=80=9Cthe cobbler=E2=80=99s children go barefoo= t=E2=80=9D. Guile/Guix >>>> are no exception since Guile builds are non-reproducible, despite work >>>> done a few years ago: >>>> >>>> https://issues.guix.gnu.org/20272 >>>> >>>> Until it=E2=80=99s fixed in Guile proper, what do you think of buildin= g Guile >>>> 2.0/2.2/3.0 with #:parallel-build? #f ? We could do that in >>>> =E2=80=98core-updates=E2=80=99 now. > > I pushed that as 2ea52f90141974fb5d88b8c6b1785817c4203da4. > >> I'm not too found of it. It'll make the already slow Guile build much >> slower, making the lower strata of core-updates packages more painfully >> slow to build and test. > > Yes, it=E2=80=99s suboptimal. OTOH, as I wrote, I think the slowdown is = not as > important as one might think: a large fraction of the Guile build time > goes into building ice-9/eval.scm and the first few files, which is > already sequential (enforced by Guile=E2=80=99s makefile). I've built Guile many times on core-updates since and it seems to be true, that the build time didn't change noticeably. >> It'll also enable us to overlook the issue for years to come >> (similarly to the fact that the testsuite of the Guix package itself >> hasn't been run in parallel for the last 6 years or so :-)). > > It remains and bug to fix in Guile, no doubt. But we also have to be > pragmatic IMO. I had the feeling this partial fix would cause build the build time to explode, but given it didn't, I'm happy with it. Thanks, Maxim