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Subject: bug#50015: Rust packages are not reproducible
Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Date: Wed, 11 Aug 2021 23:15:09 +0200
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Hello!

Rust packages, which are essentially empty, are not bit-reproducible:

--8<---------------cut here---------------start------------->8---
$ ./pre-inst-env guix challenge rust-rocket-codegen --substitute-urls=3D'ht=
tps://ci.guix.gnu.org https://bordeaux.guix.gnu.org'=20
/gnu/store/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-rocket-codegen-0.4.7 conte=
nts differ:
  no local build for '/gnu/store/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-rock=
et-codegen-0.4.7'
  https://ci.guix.gnu.org/nar/lzip/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-ro=
cket-codegen-0.4.7: 0j6zf2afvc49jnp7i6z7yvbxm0bmw8yc65hz3lncgvw5lc6z1bc1
  https://bordeaux.guix.gnu.org/nar/lzip/09hlac18bwl1kcnhdig7z1v2j8ly1czw-r=
ust-rocket-codegen-0.4.7: 015kb637b56mqcsg3f6x1qggm2bybiszji2069gb913wxbj6r=
s7w
  differing file:
    /share/cargo/registry/rocket_codegen-0.4.7.crate

1 store items were analyzed:
  - 0 (0.0%) were identical
  - 1 (100.0%) differed
  - 0 (0.0%) were inconclusive
ludo@ribbon ~/src/guix$ ./pre-inst-env guix challenge rust-rocket-codegen
/gnu/store/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-rocket-codegen-0.4.7 conte=
nts differ:
  no local build for '/gnu/store/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-rock=
et-codegen-0.4.7'
  https://ci.guix.gnu.org/nar/lzip/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-ro=
cket-codegen-0.4.7: 0j6zf2afvc49jnp7i6z7yvbxm0bmw8yc65hz3lncgvw5lc6z1bc1
  https://bordeaux.guix.gnu.org/nar/lzip/09hlac18bwl1kcnhdig7z1v2j8ly1czw-r=
ust-rocket-codegen-0.4.7: 015kb637b56mqcsg3f6x1qggm2bybiszji2069gb913wxbj6r=
s7w
  differing file:
    /share/cargo/registry/rocket_codegen-0.4.7.crate

1 store items were analyzed:
  - 0 (0.0%) were identical
  - 1 (100.0%) differed
  - 0 (0.0%) were inconclusive
$ git log |head -1
commit 973842acbc2d0dc1ab41738a534d4abda6d9efa7
--8<---------------cut here---------------end--------------->8---

The diffoscope output suggests it=E2=80=99s about timestamps on one file in=
 the
.crate archive:

--8<---------------cut here---------------start------------->8---
=E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82   --- /tmp/guix-directory.ii5wmv/sh=
are/cargo/registry/rocket_codegen-0.4.7.crate
=E2=94=82 =E2=94=82 =E2=94=82 =E2=94=9C=E2=94=80=E2=94=80 +++ /tmp/guix-dir=
ectory.uTTKSw/share/cargo/registry/rocket_codegen-0.4.7.crate
=E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=9C=E2=94=80=E2=94=80 rocket_=
codegen-0.4.7.crate-content
=E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=9C=E2=94=80=E2=94=
=80 file list
=E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 @@ -1,67 +1,67 =
@@
=E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 --rw-r--r--   0=
        0        0     1293 2021-07-27 15:22:18.000000 rocket_codegen-0.4.7=
/Cargo.toml
[=E2=80=A6]
=E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 +-rw-r--r--   0=
        0        0     1293 2021-07-27 22:01:49.000000 rocket_codegen-0.4.7=
/Cargo.toml
--8<---------------cut here---------------end--------------->8---

Does that ring a bell?

Thanks,
Ludo=E2=80=99.

PS: I noticed this via
    <http://data.guix.gnu.org/revision/973842acbc2d0dc1ab41738a534d4abda6d9=
efa7/package-reproducibility>
    with help from Chris.  Fixing this could noticeably improve our
    stats.  :-)

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Subject: bug#50015: Acknowledgement (Rust packages are not reproducible)
Message-ID: <handler.50015.B.162871651929314.ack <at> debbugs.gnu.org>
References: <87czqjk7j6.fsf@HIDDEN>
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X-Gnu-PR-Package: guix
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Date: Wed, 11 Aug 2021 21:16:02 +0000

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Subject: bug#50015: Rust packages are not reproducible
Resent-From: Efraim Flashner <efraim@HIDDEN>
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Date: Thu, 12 Aug 2021 09:44:08 +0300
From: Efraim Flashner <efraim@HIDDEN>
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On Wed, Aug 11, 2021 at 11:15:09PM +0200, Ludovic Court=C3=A8s wrote:
> Hello!
>=20
> Rust packages, which are essentially empty, are not bit-reproducible:
>=20
> --8<---------------cut here---------------start------------->8---
> $ ./pre-inst-env guix challenge rust-rocket-codegen --substitute-urls=3D'=
https://ci.guix.gnu.org https://bordeaux.guix.gnu.org'=20
> /gnu/store/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-rocket-codegen-0.4.7 con=
tents differ:
>   no local build for '/gnu/store/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-ro=
cket-codegen-0.4.7'
>   https://ci.guix.gnu.org/nar/lzip/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-=
rocket-codegen-0.4.7: 0j6zf2afvc49jnp7i6z7yvbxm0bmw8yc65hz3lncgvw5lc6z1bc1
>   https://bordeaux.guix.gnu.org/nar/lzip/09hlac18bwl1kcnhdig7z1v2j8ly1czw=
-rust-rocket-codegen-0.4.7: 015kb637b56mqcsg3f6x1qggm2bybiszji2069gb913wxbj=
6rs7w
>   differing file:
>     /share/cargo/registry/rocket_codegen-0.4.7.crate
>=20
> 1 store items were analyzed:
>   - 0 (0.0%) were identical
>   - 1 (100.0%) differed
>   - 0 (0.0%) were inconclusive
> ludo@ribbon ~/src/guix$ ./pre-inst-env guix challenge rust-rocket-codegen
> /gnu/store/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-rocket-codegen-0.4.7 con=
tents differ:
>   no local build for '/gnu/store/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-ro=
cket-codegen-0.4.7'
>   https://ci.guix.gnu.org/nar/lzip/09hlac18bwl1kcnhdig7z1v2j8ly1czw-rust-=
rocket-codegen-0.4.7: 0j6zf2afvc49jnp7i6z7yvbxm0bmw8yc65hz3lncgvw5lc6z1bc1
>   https://bordeaux.guix.gnu.org/nar/lzip/09hlac18bwl1kcnhdig7z1v2j8ly1czw=
-rust-rocket-codegen-0.4.7: 015kb637b56mqcsg3f6x1qggm2bybiszji2069gb913wxbj=
6rs7w
>   differing file:
>     /share/cargo/registry/rocket_codegen-0.4.7.crate
>=20
> 1 store items were analyzed:
>   - 0 (0.0%) were identical
>   - 1 (100.0%) differed
>   - 0 (0.0%) were inconclusive
> $ git log |head -1
> commit 973842acbc2d0dc1ab41738a534d4abda6d9efa7
> --8<---------------cut here---------------end--------------->8---
>=20
> The diffoscope output suggests it=E2=80=99s about timestamps on one file =
in the
> .crate archive:
>=20
> --8<---------------cut here---------------start------------->8---
> =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82   --- /tmp/guix-directory.ii5wmv/=
share/cargo/registry/rocket_codegen-0.4.7.crate
> =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=9C=E2=94=80=E2=94=80 +++ /tmp/guix-d=
irectory.uTTKSw/share/cargo/registry/rocket_codegen-0.4.7.crate
> =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=9C=E2=94=80=E2=94=80 rocke=
t_codegen-0.4.7.crate-content
> =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=9C=E2=94=80=E2=
=94=80 file list
> =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 @@ -1,67 +1,6=
7 @@
> =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 --rw-r--r--  =
 0        0        0     1293 2021-07-27 15:22:18.000000 rocket_codegen-0.4=
=2E7/Cargo.toml
> [=E2=80=A6]
> =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 =E2=94=82 +-rw-r--r--  =
 0        0        0     1293 2021-07-27 22:01:49.000000 rocket_codegen-0.4=
=2E7/Cargo.toml
> --8<---------------cut here---------------end--------------->8---
>=20
> Does that ring a bell?
>=20
> Thanks,
> Ludo=E2=80=99.
>=20
> PS: I noticed this via
>     <http://data.guix.gnu.org/revision/973842acbc2d0dc1ab41738a534d4abda6=
d9efa7/package-reproducibility>
>     with help from Chris.  Fixing this could noticeably improve our
>     stats.  :-)
>=20

I tried patching this a couple of ways, but it looks like the best
option is going to be a 'patch-and-repack phase after 'install. the
=2Ecrate file is really a gzip tarball, and I suspect that each time we
run 'cargo <something>' the timestamp gets updated.

--=20
Efraim Flashner   <efraim@HIDDEN>   =D7=90=D7=A4=D7=A8=D7=99=D7=9D =
=D7=A4=D7=9C=D7=A9=D7=A0=D7=A8
GPG key =3D A28B F40C 3E55 1372 662D  14F7 41AA E7DC CA3D 8351
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Message sent to bug-guix@HIDDEN:

Subject: bug#50015: Rust packages are not reproducible
Resent-From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Original-Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
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To: Efraim Flashner <efraim@HIDDEN>
Cc: 50015 <at> debbugs.gnu.org
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
References: <87czqjk7j6.fsf@HIDDEN> <YRTDOLDQK3bAV6gK@3900XT>
Date: Thu, 12 Aug 2021 10:06:56 +0200
In-Reply-To: <YRTDOLDQK3bAV6gK@3900XT> (Efraim Flashner's message of "Thu, 12
 Aug 2021 09:44:08 +0300")
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Hello!

Efraim Flashner <efraim@HIDDEN> skribis:

> I tried patching this a couple of ways, but it looks like the best
> option is going to be a 'patch-and-repack phase after 'install. the
> .crate file is really a gzip tarball, and I suspect that each time we
> run 'cargo <something>' the timestamp gets updated.

So that =E2=80=98Cargo.toml=E2=80=99 file is not something taken from the b=
uild tree?
In that case we could reset the timestamp before the tarball is
created.  But otherwise yeah, patch=E2=80=99n=E2=80=99repack.

Ludo=E2=80=99.

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From: Maxim Cournoyer <maxim.cournoyer@HIDDEN>
References: <87czqjk7j6.fsf@HIDDEN> <YRTDOLDQK3bAV6gK@3900XT>
 <874kbvhysf.fsf@HIDDEN>
Date: Tue, 03 Oct 2023 23:30:15 -0400
In-Reply-To: <874kbvhysf.fsf@HIDDEN> ("Ludovic =?UTF-8?Q?Court=C3=A8s?="'s message of "Thu, 12 Aug 2021 10:06:56 +0200")
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Hello,

Ludovic Court=C3=A8s <ludo@HIDDEN> writes:

> Hello!
>
> Efraim Flashner <efraim@HIDDEN> skribis:
>
>> I tried patching this a couple of ways, but it looks like the best
>> option is going to be a 'patch-and-repack phase after 'install. the
>> .crate file is really a gzip tarball, and I suspect that each time we
>> run 'cargo <something>' the timestamp gets updated.
>
> So that =E2=80=98Cargo.toml=E2=80=99 file is not something taken from the=
 build tree?
> In that case we could reset the timestamp before the tarball is
> created.  But otherwise yeah, patch=E2=80=99n=E2=80=99repack.

A better solution would be to have cargo honor SOURCE_DATE_EPOCH,
perhaps?  They'd probably accept such an improvement upstream.

--=20
Thanks,
Maxim

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