* bug#48661: reproducibility: build date in modus-themes.info
@ 2021-05-25 21:50 Glenn Morris
2021-05-26 9:15 ` Protesilaos Stavrou
2021-05-26 10:22 ` Kévin Le Gouguec
0 siblings, 2 replies; 4+ messages in thread
From: Glenn Morris @ 2021-05-25 21:50 UTC (permalink / raw)
To: 48661; +Cc: info
Package: emacs
Version: 28.0.50
Severity: minor
doc/misc/modus-themes.org contains this:
This manual was built on {{{export-date}}}.
This makes the generated info file non-reproducible (different every build).
Please consider removing this information.
^ permalink raw reply [flat|nested] 4+ messages in thread* bug#48661: reproducibility: build date in modus-themes.info
2021-05-25 21:50 bug#48661: reproducibility: build date in modus-themes.info Glenn Morris
@ 2021-05-26 9:15 ` Protesilaos Stavrou
2021-05-26 10:22 ` Kévin Le Gouguec
1 sibling, 0 replies; 4+ messages in thread
From: Protesilaos Stavrou @ 2021-05-26 9:15 UTC (permalink / raw)
To: Glenn Morris, 48661-done
On 2021-05-25, 17:50 -0400, Glenn Morris <rgm@gnu.org> wrote:
> Package: emacs
> Version: 28.0.50
> Severity: minor
>
> doc/misc/modus-themes.org contains this:
>
> This manual was built on {{{export-date}}}.
>
> This makes the generated info file non-reproducible (different every build).
> Please consider removing this information.
Thank you! I just installed the changes as commit 5a762c946e.
--
Protesilaos Stavrou
https://protesilaos.com
^ permalink raw reply [flat|nested] 4+ messages in thread* bug#48661: reproducibility: build date in modus-themes.info
2021-05-25 21:50 bug#48661: reproducibility: build date in modus-themes.info Glenn Morris
2021-05-26 9:15 ` Protesilaos Stavrou
@ 2021-05-26 10:22 ` Kévin Le Gouguec
2021-05-26 10:40 ` Andreas Schwab
1 sibling, 1 reply; 4+ messages in thread
From: Kévin Le Gouguec @ 2021-05-26 10:22 UTC (permalink / raw)
To: Glenn Morris; +Cc: info, 48661
Glenn Morris <rgm@gnu.org> writes:
> This manual was built on {{{export-date}}}.
>
> This makes the generated info file non-reproducible (different every build).
> Please consider removing this information.
Question from the peanut gallery: are timestamp information really
verboten in reproducible builds? I was led to believe that the
SOURCE_DATE_EPOCH mechanism was introduced to allow programs to keep
embedding this information, while giving packagers the means to assert
reproducibility.
https://reproducible-builds.org/docs/source-date-epoch/
I am not well-versed on the subject of reproducible builds, so I
apologize if I am misunderstanding the state of things; also, since I
don't think the Emacs build system uses the SOURCE_DATE_EPOCH mechanism,
I realize that this idea might be out of scope for this bug report…
^ permalink raw reply [flat|nested] 4+ messages in thread* bug#48661: reproducibility: build date in modus-themes.info
2021-05-26 10:22 ` Kévin Le Gouguec
@ 2021-05-26 10:40 ` Andreas Schwab
0 siblings, 0 replies; 4+ messages in thread
From: Andreas Schwab @ 2021-05-26 10:40 UTC (permalink / raw)
To: Kévin Le Gouguec; +Cc: Glenn Morris, info, 48661
On Mai 26 2021, Kévin Le Gouguec wrote:
> Question from the peanut gallery: are timestamp information really
> verboten in reproducible builds? I was led to believe that the
> SOURCE_DATE_EPOCH mechanism was introduced to allow programs to keep
> embedding this information, while giving packagers the means to assert
> reproducibility.
That requires support for SOURCE_DATE_EPOCH in each place a timestamp is
generated. For example, gcc does that for __DATE__ and __TIME__. If
org wants to keep the timestamp it should add support for
SOURCE_DATE_EPOCH.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-05-26 10:40 UTC | newest]
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2021-05-25 21:50 bug#48661: reproducibility: build date in modus-themes.info Glenn Morris
2021-05-26 9:15 ` Protesilaos Stavrou
2021-05-26 10:22 ` Kévin Le Gouguec
2021-05-26 10:40 ` Andreas Schwab
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