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From: Danny Milosavljevic <dannym@scratchpost.org>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: 27563@debbugs.gnu.org
Subject: bug#27563: [PATCH v3 0/2] Make ghostscript reproducible.
Date: Fri, 7 Jul 2017 20:20:31 +0200	[thread overview]
Message-ID: <20170707202031.7a4d9c35@scratchpost.org> (raw)
In-Reply-To: <87o9swxhip.fsf@gnu.org>

On Fri, 07 Jul 2017 19:51:10 +0200
ludo@gnu.org (Ludovic Courtès) wrote:

> For CreationDate/ModDate, I think it should honor SOURCE_DATE_EPOCH as
> in
> <https://anonscm.debian.org/git/printing/ghostscript.git/tree/debian/patches/2010_add_build_timestamp_setting.patch?id=e2bf3ad7026afe13636d4937430c3fdae7854078>.

Really?  I've been leaving them off, too.  Especially because of this funny comment in the upstream ghostscript:

/* Initialize the IDs allocated at startup. */
void
pdf_initialize_ids(gx_device_pdf * pdev)
{
...
    /*
     * Acrobat Distiller sets CreationDate and ModDate to the current
     * date and time, rather than (for example) %%CreationDate from the
     * PostScript file.  We think this is wrong, but we do the same.
     */
    {
... proceed to set CreationDate and ModDate to the current time.
    }
}

> For the two UUIDs (and “ID” too?), maybe we can use, say,
> GS_GENERATE_UUIDS; if set to 0 or “no” it’s disable, otherwise it’s
> enabled.

That would look like this:

if (!getenv("GS_GENERATE_UUIDS") || strcmp(getenv("GS_GENERATE_UUIDS"), "0") == 0 || strcmp(getenv("GS_GENERATE_UUIDS"), "no") == 0) ...

> > Also, where would we set it so the build processes of all the other
> > packages actually pick it up?  
> 
> Eventually we can add it to gnu-build-system.scm, but for now, given
> that core-updates is well built, we should add it on a case-by-case
> basis.  I don’t think there are that many packages that produce PDFs,
> but I could be wrong.

Okay :)
	

  reply	other threads:[~2017-07-07 18:21 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-03 18:08 bug#27563: ghostscript-with-cups is not reproducible Danny Milosavljevic
2017-07-03 18:16 ` bug#27563: [PATCH] gnu: ghostscript: Add phase "remove-timestamps" Danny Milosavljevic
2017-07-03 19:18   ` Efraim Flashner
2017-07-05 21:57     ` Ludovic Courtès
2017-07-04 19:08   ` Leo Famulari
2017-07-03 19:46 ` bug#27563: [PATCH v2] gnu: ghostscript: Remove timestamps Danny Milosavljevic
2017-07-06  9:07 ` bug#27563: [PATCH] gnu: ghostscript: Don't write document UUID; use "" as instance UUID Danny Milosavljevic
2017-07-07 11:55   ` Ludovic Courtès
2017-07-07 13:28     ` Danny Milosavljevic
2017-07-06 10:32 ` bug#27563: [PATCH v3 0/2] Make ghostscript reproducible Danny Milosavljevic
2017-07-06 10:32   ` bug#27563: [PATCH v3 1/2] gnu: ghostscript: Don't write document UUID; use "" as instance UUID Danny Milosavljevic
2017-07-06 10:32   ` bug#27563: [PATCH v3 2/2] gnu: ghostscript: Write document ID only when encrypting Danny Milosavljevic
2017-07-07 12:02     ` Ludovic Courtès
2017-07-07 13:21       ` Danny Milosavljevic
2017-07-07 16:21         ` Leo Famulari
2017-07-07 16:42           ` Danny Milosavljevic
2017-07-07 17:24             ` Leo Famulari
2017-07-08 13:50               ` Leo Famulari
2017-07-07 17:45             ` Ludovic Courtès
2017-07-07 12:00   ` bug#27563: [PATCH v3 0/2] Make ghostscript reproducible Ludovic Courtès
2017-07-07 13:25     ` Danny Milosavljevic
2017-07-07 15:18       ` Ludovic Courtès
2017-07-07 15:44         ` Danny Milosavljevic
2017-07-07 17:51           ` Ludovic Courtès
2017-07-07 18:20             ` Danny Milosavljevic [this message]
2017-07-08 14:32               ` Ludovic Courtès
2017-07-09 23:40         ` bug#27563: [PATCH v4 0/3] " Danny Milosavljevic
2017-07-09 23:46           ` bug#27563: [PATCH v4 1/3] gnu: ghostscript: Make "/ID" optional, depending on environment variable Danny Milosavljevic
2017-07-09 23:46             ` bug#27563: [PATCH v4 2/3] gnu: ghostscript: Make XMP UUID headers " Danny Milosavljevic
2017-07-10 15:23               ` Ludovic Courtès
2017-07-09 23:46             ` bug#27563: [PATCH v4 3/3] gnu: ghostscript: Make "/CreationDate", "/ModDate" optoinal, " Danny Milosavljevic
2017-07-10 15:25               ` Ludovic Courtès
2017-07-10 15:21             ` bug#27563: [PATCH v4 1/3] gnu: ghostscript: Make "/ID" optional, " Ludovic Courtès
2017-07-10 16:35           ` bug#27563: [PATCH v4 0/3] Make ghostscript reproducible Danny Milosavljevic
2017-07-07 15:34     ` bug#27563: [PATCH v3 0/2] " Danny Milosavljevic
2017-07-07 17:46       ` Ludovic Courtès
2017-07-06 10:59 ` bug#27563: ghostscript-with-cups is not reproducible Danny Milosavljevic

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