Received: (at 61852) by debbugs.gnu.org; 3 Mar 2023 10:45:13 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Mar 03 05:45:13 2023 Received: from localhost ([127.0.0.1]:59709 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1pY2uW-0007Gz-OU for submit <at> debbugs.gnu.org; Fri, 03 Mar 2023 05:45:13 -0500 Received: from eggs.gnu.org ([209.51.188.92]:60436) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <ludo@HIDDEN>) id 1pY2uU-0007Gk-Uv for 61852 <at> debbugs.gnu.org; Fri, 03 Mar 2023 05:45:11 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <ludo@HIDDEN>) id 1pY2uN-0000aA-FD; Fri, 03 Mar 2023 05:45:03 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:In-Reply-To:Date:References:Subject:To: From; bh=CU69ecfKykzE87u0OZlo0G3RsaH5cfXbJNXzYfeZ9Ks=; b=TWtkMsxmsQ3cx0Vxa0xO /GBFCgjbYyxmoYLIqeDQHSKjI2lV9ng6U/NcT0pf/VYUvxEgo09VVnu2qR/ok+RTyej+AO6OJlo0t bS6FzVSkhMWXZf+OvhbNfaxML+X625emuXtG+NsETCpWXr+oEX43gd1StlyRD0mZTxQYubVkcHitW 4z+rJE4bvO7cgpftub96eiDhlvDnLIVsh3y1pQcynzCfWNZfOLagfs+t9s5+ioAcPSJc69EQA7tGe S1N87YsG1Q08ZnsqrJQC1h6JxO3LJSTYFgNupCYXaz0534REphxQviZWsm0m4emI54RRdfX+qkBsC piMtZ1Q8RP0Hcg==; Received: from [193.50.110.138] (helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <ludo@HIDDEN>) id 1pY2uM-0005Qr-Qi; Fri, 03 Mar 2023 05:45:03 -0500 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN> To: Andrew Whatson <whatson@HIDDEN> Subject: Re: bug#61852: =?utf-8?Q?=E2=80=98scheme48-prescheme=E2=80=99?= is not reproducible References: <87zg8yhlcr.fsf@HIDDEN> <ce426348-bd75-a2ed-885b-92f1caf11f37@HIDDEN> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: Tridi 13 =?utf-8?Q?Vent=C3=B4se?= an 231 de la =?utf-8?Q?R=C3=A9volution=2C?= jour de la Fumeterre X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Fri, 03 Mar 2023 11:45:01 +0100 In-Reply-To: <ce426348-bd75-a2ed-885b-92f1caf11f37@HIDDEN> (Andrew Whatson's message of "Tue, 28 Feb 2023 15:55:23 +1000") Message-ID: <878rgeyuz6.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 61852 Cc: 61852 <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: -3.3 (---) Hi, Andrew Whatson <whatson@HIDDEN> skribis: > Comparing hex dumps of the files, there are significant differences, > and a quick dive through the image dumping code leads into VM and > garbage collector details which are over my head. > > I guess patching Scheme 48 to build deterministic images is > out-of-scope and maybe an issue for upstream. Yes, probably! Would you mind reporting it upstream? Thanks, Ludo=E2=80=99.
bug-guix@HIDDEN:bug#61852; Package guix.
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To: =?UTF-8?Q?Ludovic_Court=c3=a8s?= <ludo@HIDDEN>, 61852 <at> debbugs.gnu.org
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Ludovic Courtès wrote:
> Hi again Andrew,
>
> It turns out that the package is not reproducible:
>
> --8<---------------cut here---------------start------------->8---
> $ ./pre-inst-env guix challenge scheme48-prescheme
> /gnu/store/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2 contents differ:
> no local build for '/gnu/store/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2'
> https://ci.guix.gnu.org/nar/lzip/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2: 0fahr4s5qz980zz96xmrwf8r87w56kicxr8s80fvis98q7v5czll
> https://bordeaux.guix.gnu.org/nar/lzip/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2: 0jphmcmijk68phwq93qbzszy5pdmnasa3qdcp2nc5wqc25a7kpxk
> differing file:
> /lib/scheme48-1.9.2/prescheme.image
>
> 1 store items were analyzed:
> - 0 (0.0%) were identical
> - 1 (100.0%) differed
> - 0 (0.0%) were inconclusive
> $ git log |head -1
> commit cf9e0508b26196dc985302776d860a0359652c59
> --8<---------------cut here---------------end--------------->8---
>
> Any idea what might be wrong?
Hmm, interesting!
This is an image produced by Scheme 48 dumping its VM state into a file
which can be loaded later to save parsing/expansion time. This is the
same technique used by Scheme 48 to produce its own initial image. It
looks like the "scheme48" package has the same problem:
```
$ guix challenge scheme48
/gnu/store/9c47l5cn60zrr9sm0hn55zibf8zmv33l-scheme48-1.9.2 contents differ:
local hash: 0pyygj4nf8fw2xpciy81d01r2b2339bxhgpfdn2zq2wqvsn2ycra
https://ci.guix.gnu.org/nar/lzip/9c47l5cn60zrr9sm0hn55zibf8zmv33l-scheme48-1.9.2:
0pyygj4nf8fw2xpciy81d01r2b2339bxhgpfdn2zq2wqvsn2ycra
https://bordeaux.guix.gnu.org/nar/lzip/9c47l5cn60zrr9sm0hn55zibf8zmv33l-scheme48-1.9.2:
12wxxqxmpdqgg2fzbcbm68h1jqynz9gqhxzalyspqq7hh2fgr46k
differing file:
/lib/scheme48-1.9.2/scheme48.image
1 store items were analyzed:
- 0 (0.0%) were identical
- 1 (100.0%) differed
- 0 (0.0%) were inconclusive
```
Comparing hex dumps of the files, there are significant differences, and
a quick dive through the image dumping code leads into VM and garbage
collector details which are over my head.
I guess patching Scheme 48 to build deterministic images is out-of-scope
and maybe an issue for upstream.
> Thanks,
> Ludo’.
Cheers!
Andrew
bug-guix@HIDDEN:bug#61852; Package guix.
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Subject: =?utf-8?Q?=E2=80=98scheme48-prescheme=E2=80=99?= is not reproducible
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Hi again Andrew,
It turns out that the package is not reproducible:
--8<---------------cut here---------------start------------->8---
$ ./pre-inst-env guix challenge scheme48-prescheme
/gnu/store/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2 conten=
ts differ:
no local build for '/gnu/store/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-=
prescheme-1.9.2'
https://ci.guix.gnu.org/nar/lzip/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme4=
8-prescheme-1.9.2: 0fahr4s5qz980zz96xmrwf8r87w56kicxr8s80fvis98q7v5czll
https://bordeaux.guix.gnu.org/nar/lzip/qkby7f4nr3lxlm16zmswmka5hgfs6spw-s=
cheme48-prescheme-1.9.2: 0jphmcmijk68phwq93qbzszy5pdmnasa3qdcp2nc5wqc25a7kp=
xk
differing file:
/lib/scheme48-1.9.2/prescheme.image
1 store items were analyzed:
- 0 (0.0%) were identical
- 1 (100.0%) differed
- 0 (0.0%) were inconclusive
$ git log |head -1
commit cf9e0508b26196dc985302776d860a0359652c59
--8<---------------cut here---------------end--------------->8---
Any idea what might be wrong?
Thanks,
Ludo=E2=80=99.
Ludovic Courtès <ludo@HIDDEN>:whatson@HIDDEN, bug-guix@HIDDEN.
Full text available.whatson@HIDDEN, bug-guix@HIDDEN:bug#61852; Package guix.
Full text available.
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