From: Guillaume Le Vaillant <glv@posteo.net>
To: "Paul A. Patience" <paul@apatience.com>
Cc: Kaz Kylheku <kaz@kylheku.com>, 49517@debbugs.gnu.org
Subject: [bug#49517] [PATCH] gnu: txr: Build documentation and update to 265.
Date: Mon, 19 Jul 2021 12:08:19 +0000 [thread overview]
Message-ID: <87bl6ycxqk.fsf@kitej> (raw)
In-Reply-To: <jQ1k4B4YWFlW-eDeV_xh7RMYvSc6-z8A8Bhb10wmDzXvNfnRPJ__gAZ25piSnz_wgzPB-pux6m4Aj5aRK7AxeH1P3QjPx8ZPka6QEUpAh50=@apatience.com>
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Paul A. Patience <paul@apatience.com> skribis:
> On Sunday, July 18th, 2021 at 16:27, Kaz Kylheku <kaz@kylheku.com> wrote:
>> Either Ubuntu has a different upstream for these tools, or else they
>> have some patches (which would be worth stealing instead of repeating
>> the work).
>>
>> Moreover, if Ubuntu has patches for this, it might be getting them from
>> Debian.
>
> I know Debian is making great efforts to obtain reproducible builds [1],
> and in fact if you look at the first message of the bug report I
> previously linked [2], they mention that they have been using some
> custom patches to get Ghostscript to produce reproducible output
> (on Debian).
> In fact, we can find some information about Debian's Ghostscript patch
> here [3], though unfortunately the link to the patch is dead.
>
> (There is also more information about reproducible builds here [4].)
>
> Best regards,
> Paul
>
> [1]: https://isdebianreproducibleyet.com/
> [2]: https://bugs.ghostscript.com/show_bug.cgi?id=696765
> [3]: https://wiki.debian.org/ReproducibleBuilds/PdfGeneratedByGhostscript
> [4]: https://wiki.debian.org/ReproducibleBuilds/Howto
So Debian indeed has a patch adding the possibility to set the timestamp
based on SOURCE_DATE_EPOCH (see '2010_add_build_timestamp_setting.patch'
in [1] for example).
Guix also has a patch, but a different one based on GS_GENERATE_UUIDS.
However this patch is missing a part disabling two of the timestamps.
I proposed a patch to fix that (see [2]).
With this fix, 'pdf-clobber-stamps.tl' is not necessary anymore to build
the documentation reproducibly in Guix, but it might still be useful for
some other build environments.
[1] http://security.debian.org/debian-security/pool/updates/main/g/ghostscript/ghostscript_9.26a~dfsg-0+deb9u7.debian.tar.xz
[2] https://bugs.gnu.org/49640
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next prev parent reply other threads:[~2021-07-19 12:09 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-11 0:37 [bug#49517] [PATCH] gnu: txr: Build documentation and update to 265 Paul A. Patience
2021-07-12 1:01 ` Paul A. Patience
2021-07-13 23:45 ` Paul A. Patience
2021-07-17 9:57 ` Guillaume Le Vaillant
2021-07-17 22:51 ` Kaz Kylheku
2021-07-18 3:43 ` Kaz Kylheku
2021-07-18 10:36 ` Guillaume Le Vaillant
2021-07-18 12:59 ` Paul A. Patience
2021-07-20 9:07 ` bug#49517: " Guillaume Le Vaillant
2021-07-18 20:27 ` [bug#49517] " Kaz Kylheku
2021-07-18 21:28 ` Paul A. Patience
2021-07-19 12:08 ` Guillaume Le Vaillant [this message]
2021-07-19 21:31 ` Kaz Kylheku
2021-07-20 9:18 ` Guillaume Le Vaillant
2021-07-19 3:23 ` Kaz Kylheku
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