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Hello Bill,
On 09/04/16 13:36, Bill Allombert wrote:
> On Fri, Apr 01, 2016 at 04:22:03PM +0200, Jerome Benoit wrote:
>> Package: gap-core
>> Version: 4r7p5-2
>> Severity: normal
>>
>> Dear Maintainer,
>>
>> the script /usr/share/gap/etc/convert.pl generates non-reproducible
>> material.
>> The involved code is:
>>
>> ===========8><----------------------------
>> # Printed at the bottom of every page.
>> $footer = "<P>\n" . sansserif( "GAP 4 manual<br>" . `date +"%B %Y"` ) .
>> "</body></html>";
>> -----------><8============================
>
> Hello Jerome,
>
> I do not think this line is an issue but rather the one below:
> $footer = "<P>\n<address>$opt_n manual<br>" .
> `date +"%B %Y"` . "</address></body></html>";
the issue is the date arguments, and it was spot correctly.
>
> I consider applying the attached patch.
> You just have to set the environment variable 'GAP_CONVERT_DATE'
> to the date which is listed in the upstream html files.
>
> Does that work for you ?
No, this does not work for me because it does not work for Debian:
no need to introduce a new environment variable (and certainly not a GAP one),
but instead the change must follow the ReproducibleBuilds TimestampsProposal
[1,2].
So, the subroutine "reprodate" must be slightly modified: numerous examples are
available
via Debian Source [3]. Something as follows may be fine (see attachment):
sub reprodate
{
return `date -u -d $ENV{'SOURCE_DATE_EPOCH'} +"%B %Y"` if
(defined($ENV{'SOURCE_DATE_EPOCH'}));
return `date +"%B %Y"`
}
Best wishes,
Jerome
[1] https://wiki.debian.org/ReproducibleBuilds/TimestampsProposal
[2] https://wiki.debian.org/ReproducibleBuilds/Howto
[3] http://sources.debian.net/
>
> Cheers,
> Bill
>
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#!/usr/bin/perl
##
## examples:
## $ ./adhoc
## $ SOURCE_DATE_EPOCH=@2147483647 ./adhoc
sub reprodate
{
return `date -u -d $ENV{'SOURCE_DATE_EPOCH'} +"%B %Y"` if
(defined($ENV{'SOURCE_DATE_EPOCH'}));
return `date +"%B %Y"`
}
print &reprodate
# eos
