[rrdtool-maint] multi-arch:same failures when bin-nmus changelog dates are not the same

[Jean-Michel Vourgère]

Some thoughs:

On arm64 [1] the binnmu .buildinfo contains:
Environment:
 DEB_BUILD_OPTIONS="parallel=3"
 LC_ALL="POSIX"
 SOURCE_DATE_EPOCH="1522153653"

while on armhf [2] the binnmu .buildinfo contains:
Environment:
 DEB_BUILD_OPTIONS="parallel=4"
 LC_ALL="POSIX"
 SOURCE_DATE_EPOCH="1522224789"

/s/b/dpkg-buildpackage does not overwrite SOURCE_DATE_EPOCH if it is already 
defined in the environment.
Also, it looks like it does not parse the changelog.Debian.$arch that are bin-
nmu specifics.

Could it be that the wanna-build stack wrongly define the variable before 
calling dpkg-buildpackage?

Any way, the value must be identical in all architectures. And it's not the 
case.



[1] https://buildd.debian.org/status/fetch.php?
pkg=rrdtool&arch=arm64&ver=1.7.0-1%2Bb1&stamp=1522153882&raw=0
[2] https://buildd.debian.org/status/fetch.php?
pkg=rrdtool&arch=armhf&ver=1.7.0-1%2Bb1&stamp=1522225293&raw=0

On Thursday, 29 March 2018 14:41:28 CEST Jean-Michel Vourgère wrote:
> Hello
> 
> My package rrdtool [1] got some multi-arch failures since last bin-nmu.
> 
> The problem is that pod2man uses the changelog date to generate the man
> footer, and that date is no longer the same on all architectures !
> 
> /usr/share/doc/librrds-perl/changelog.Debian.arm64.gz contains
> rrdtool (1.7.0-1+b1) sid; urgency=low, binary-only=yes
>   * Binary-only non-maintainer upload for arm64; no source changes.
>   * Rebuild without ruby2.3 support.
>  -- arm Build Daemon (arm-conova-01) <buildd_arm64-arm-
> conova-01 at buildd.debian.org>  Tue, 27 Mar 2018 12:27:33 +0000
> 
> 
> while /usr/share/doc/librrds-perl/changelog.Debian.armhf.gz contains
> rrdtool (1.7.0-1+b1) sid; urgency=low, binary-only=yes
>   * Binary-only non-maintainer upload for armhf; no source changes.
>   * Rebuild without ruby2.3 support.
>  -- armhf / armel Build Daemon (hoiby)
> <buildd_armhf-hoiby at buildd.debian.org> Wed, 28 Mar 2018 08:13:09 +0000
> 
> 
> as a result, /usr/share/man/man3/RRDs.3pm.gz differs on arm64 architecture:
> .TH RRDs 3pm "2018-03-27" "perl v5.26.1" "User Contributed Perl
> Documentation" and on armhf architecture:
> .TH RRDs 3pm "2018-03-28" "perl v5.26.1" "User Contributed Perl
> Documentation"
> 
> Ultimately, this makes package librrds-perl is no longer co-installable.
> Multi-arch hinter says:
> librrds-perl conflicts on /usr/share/man/man3/RRDs.3pm.gz on armhf <->
> amd64, arm64, armel, and 6 more
> 
> Please advise how to proceed!
> 
> 
> [1] https://tracker.debian.org/pkg/rrdtool