Received: (at 32919) by debbugs.gnu.org; 3 Oct 2018 16:56:39 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Oct 03 12:56:39 2018 Received: from localhost ([127.0.0.1]:35842 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1g7kRz-00055m-FN for submit <at> debbugs.gnu.org; Wed, 03 Oct 2018 12:56:39 -0400 Received: from mail-it1-f178.google.com ([209.85.166.178]:55457) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <boskovits@HIDDEN>) id 1g7kRw-00055W-PP for 32919 <at> debbugs.gnu.org; Wed, 03 Oct 2018 12:56:38 -0400 Received: by mail-it1-f178.google.com with SMTP id c23-v6so9260725itd.5 for <32919 <at> debbugs.gnu.org>; Wed, 03 Oct 2018 09:56:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=KaqNOJOVOOIaVnGLYgkW5C6wFqLBBucsJAEHb2/VN3M=; b=k+qiBWR7VrofW5SwSRnOBvDdGV7ADSMmxKZTOvXBOAnrEwgnwE2j7bfUcQR+ZDehdY 5OkqWJdXZBM6+x4s0xoHs8voUdBcURbiuhMamyOUEQ++fGCTcKajq0bzgky89/EIIuq1 RjCJVee8NaWbpIHgR2a5xrHMQfIwcQI2mpT9/u3xUPQxhgmxdmKwACrRHK0oHotgXvoT GycFnh5yO3f9m9olf9Jmlig+29DoLPLm9PMODL6F0UrDucoTdCQroP13H0r8FlZWsEdL ap52S7hPcPNUcHR8ItiMHD1ZJbjkfw8PfPE9xLti9c3u7lBX02s4tpFX/vDdgIRCBwqP C+YQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=KaqNOJOVOOIaVnGLYgkW5C6wFqLBBucsJAEHb2/VN3M=; b=CxWyPi+nq/+a8DByELYmdVlLSh+mwnNghIeKDdBquaOZDjLqNbzdOqS18EP+0wQzw8 4+MfyjOpFY5zwzN/S53eXcErdTsuNVLlDppUQhmk94FsMxe32t4KLciaOyid2neYVHx9 urY+Sp1bHBr3xp6zRcBm+BrxCLXfZGJiYyTpME/qMbygfxKFeteDgL7RwZ6e/qOVxCVj rC9NfEjt39LgNzr5bg45xKICyDQXWWFn/R0Tvo3kB29XqVa6O/KgwPU7tec9isG59bly SV9Fi1qsrmE0OAp2CN30q2FOS1j88Gcc+xBtahuN1/JVUVyS9D/kBeIwxdQBpg9UCSSi /fXw== X-Gm-Message-State: ABuFfojrR9ou9Tl8rU+h6/WbG2WM3cFzso8utaNHWsDDncvcaGEMIEdp Hx+FLaT93oCaFUz7PXsivtXkVVDhp2hhKorw0Q== X-Google-Smtp-Source: ACcGV62lSjOr4Z7TqGKkmb5YmVw0tlHg6YH5WaCV9hUcQKWIThFt0cx/CbfYUWKYrkpubNCoPr1icE0nyPQzo1tIwI8= X-Received: by 2002:a02:9867:: with SMTP id x36-v6mr1894206jaj.117.1538585790949; Wed, 03 Oct 2018 09:56:30 -0700 (PDT) MIME-Version: 1.0 References: <87va6km333.fsf@HIDDEN> <20181003145335.GB24877@HIDDEN> In-Reply-To: <20181003145335.GB24877@HIDDEN> From: =?UTF-8?Q?G=C3=A1bor_Boskovits?= <boskovits@HIDDEN> Date: Wed, 3 Oct 2018 18:56:19 +0200 Message-ID: <CAE4v=ph+aDO50zc+37TkksiT=sq-R5=DdiHABtyN1qat=+H_ow@HIDDEN> Subject: Re: bug#32919: Golang build cache and content-based staleness in Guix To: Leo Famulari <leo@HIDDEN> Content-Type: multipart/alternative; boundary="00000000000086c52e057755eb39" X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 32919 Cc: Katherine Cox-Buday <cox.katherine.e@HIDDEN>, 32919 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) --00000000000086c52e057755eb39 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Leo Famulari <leo@HIDDEN> ezt =C3=ADrta (id=C5=91pont: 2018. okt. 3.= , Sze, 16:54): > On Tue, Oct 02, 2018 at 04:49:20PM -0500, Katherine Cox-Buday wrote: > > We should perhaps begin thinking about switching the Go build system to > > the 1.11 series of releases. > > I agree. When Go 1.11 was released, Go 1.9 became unsupported upstream, > so we should stop using it. > > The go-build-system as implemented in Guix worked great through Go 1.9. > > Go 1.10 changed how the Go compiler chooses whether or not to re-use > compiled Go objects, using a technique they call "content-based > staleness", which is basically a memoized cache, similar to Guix. [0] > > For us, the downside of that change is that, when building within Guix > using the tools we have now, the Go compiler never re-uses compiled > objects and instead rebuilds everything, every time. That is, the Go > build cache is never hit. It's inefficient but nothing breaks from what > I've seen. > > It would be great if our go-build-system could be updated to work with > the new Go build cache, but in my opinion it's not a blocker. I think we > will have to change it eventually, because they seem to be phasing out > $GOPATH, but we are good for now. > > What do you think? > > I think we should go for it. I don't think the cache issue is a blocker. > [0] > https://bugs.gnu.org/30579 > https://golang.org/doc/go1.10#build > --00000000000086c52e057755eb39 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div class=3D"gmail_quote"><div dir=3D"ltr">Leo Famulari &= lt;<a href=3D"mailto:leo@HIDDEN">leo@HIDDEN</a>> ezt =C3= =ADrta (id=C5=91pont: 2018. okt. 3., Sze, 16:54):<br></div><blockquote clas= s=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pad= ding-left:1ex">On Tue, Oct 02, 2018 at 04:49:20PM -0500, Katherine Cox-Buda= y wrote:<br> > We should perhaps begin thinking about switching the Go build system t= o<br> > the 1.11 series of releases.<br> <br> I agree. When Go 1.11 was released, Go 1.9 became unsupported upstream,<br> so we should stop using it.<br> <br> The go-build-system as implemented in Guix worked great through Go 1.9.<br> <br> Go 1.10 changed how the Go compiler chooses whether or not to re-use<br> compiled Go objects, using a technique they call "content-based<br> staleness", which is basically a memoized cache, similar to Guix. [0]<= br> <br> For us, the downside of that change is that, when building within Guix<br> using the tools we have now, the Go compiler never re-uses compiled<br> objects and instead rebuilds everything, every time. That is, the Go<br> build cache is never hit. It's inefficient but nothing breaks from what= <br> I've seen.<br> <br> It would be great if our go-build-system could be updated to work with<br> the new Go build cache, but in my opinion it's not a blocker. I think w= e<br> will have to change it eventually, because they seem to be phasing out<br> $GOPATH, but we are good for now.<br> <br> What do you think?<br> <br></blockquote><div><br></div><div>I think we should go for it. I don'= ;t think the cache issue is a blocker.</div><div>=C2=A0</div><blockquote cl= ass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;p= adding-left:1ex"> [0]<br> <a href=3D"https://bugs.gnu.org/30579" rel=3D"noreferrer" target=3D"_blank"= >https://bugs.gnu.org/30579</a><br> <a href=3D"https://golang.org/doc/go1.10#build" rel=3D"noreferrer" target= =3D"_blank">https://golang.org/doc/go1.10#build</a><br> </blockquote></div></div> --00000000000086c52e057755eb39--
bug-guix@HIDDEN:bug#32919; Package guix.
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Wed, 3 Oct 2018 10:53:35 -0400 (EDT) Date: Wed, 3 Oct 2018 10:53:35 -0400 From: Leo Famulari <leo@HIDDEN> To: bug-guix@HIDDEN Subject: Golang build cache and content-based staleness in Guix Message-ID: <20181003145335.GB24877@HIDDEN> References: <87va6km333.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="UHN/qo2QbUvPLonB" Content-Disposition: inline In-Reply-To: <87va6km333.fsf@HIDDEN> User-Agent: Mutt/1.10.1 (2018-07-13) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.1 (----) X-Debbugs-Envelope-To: submit Cc: Katherine Cox-Buday <cox.katherine.e@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -5.1 (-----) --UHN/qo2QbUvPLonB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Oct 02, 2018 at 04:49:20PM -0500, Katherine Cox-Buday wrote: > We should perhaps begin thinking about switching the Go build system to > the 1.11 series of releases. I agree. When Go 1.11 was released, Go 1.9 became unsupported upstream, so we should stop using it. The go-build-system as implemented in Guix worked great through Go 1.9. Go 1.10 changed how the Go compiler chooses whether or not to re-use compiled Go objects, using a technique they call "content-based staleness", which is basically a memoized cache, similar to Guix. [0] For us, the downside of that change is that, when building within Guix using the tools we have now, the Go compiler never re-uses compiled objects and instead rebuilds everything, every time. That is, the Go build cache is never hit. It's inefficient but nothing breaks from what I've seen. It would be great if our go-build-system could be updated to work with the new Go build cache, but in my opinion it's not a blocker. I think we will have to change it eventually, because they seem to be phasing out $GOPATH, but we are good for now. What do you think? [0] https://bugs.gnu.org/30579 https://golang.org/doc/go1.10#build --UHN/qo2QbUvPLonB Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEsFFZSPHn08G5gDigJkb6MLrKfwgFAlu01+8ACgkQJkb6MLrK fwhB+xAAuns5YbQRk1tZILYXRLYnFcAv1kpEvu+BG59Kd6MQHw34GpYfykYHffKC ZWkTKk3YgjuB4W+9WzRDpgWUMAYBJgZMQ7D8qTo+tb2F+FeXa55HYIbygJ3LMWbS QE87wkWq/8NSnZlthmlxM8yrKhHNIdBDeeIRpp2y7hV3Ztv07IHWn2fEkZSg7T9n ff3CcAZQK/sK83BR2uG70ImCaUqltZXJUErL2JrMrvkDsobr0iujw3pdBVXbRZIr S+UK06XQ/BORpBAJ99IvitNRRs5fIMtU1U2xZkOk+iGCiUne0MAs4sEIZEyTW393 RuMM9o+n7u7iOQcop45sK6PxxDukuM/Xwg9iFoL8CELRbXg0kLtVhVUfUlGzoJWM rDN0ezJdSqhwUOP6ufCV4U/ZWV8i531XwW3ZDCvQW63jIIfme07FADEaSCmkTAwJ 7ERN8Ae3hbNjfHSJRnzQPSCbeJlMyMT3JnheO2Tks6PcM0gd0jgUp8TvH632Nrcd 1auvGozMIYTGewqrPnYh1G8ljErPb05gqzvybFal3mc64fgVKGpuXc3e9jvUqfXp WsXQfOeydMIXp4UED42gUQhRTEik9UfZFp76KqhC0iDA1jf0IwHT51xxPUdr/bXo Kb9fJxZQrNVA87J6q6f9acsLs4Jzxs8+Tlc+01oXFvlmoKRTpok= =xfUb -----END PGP SIGNATURE----- --UHN/qo2QbUvPLonB--
Leo Famulari <leo@HIDDEN>:bug-guix@HIDDEN.
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