Bug#1101741: isync: please make the build reproducible

[Chris Lamb]

Oswald Buddenhagen wrote:

> On Mon, Mar 31, 2025 at 11:17:15AM +0100, Chris Lamb wrote:
>>+-RELEASE_DATE=`date -r $0 +%F`
>>++RELEASE_DATE=m4_esyscmd([date --utc --date="@${SOURCE_DATE_EPOCH:-$(date 
>>+%s)}" +%Y-%m-%d])
>>
> did you even try to understand what the upstream code does, and why it
> fails here?

Oh sure. But we (RB) have found that using reference filestamps like
this to seed dates tends to be both unpredictable and opaque. Hence
the suggestion to use SOURCE_DATE_EPOCH, which would not require a
Debian-specific change (eg. your "date -r debian/changelog…"), and
could therefore be upstreamed.

(Either way, the current call is missing the --utc/-u flag.)


Best wishes,

-- 
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