Bug#846365: debrepro: warn about faketime and allow alternative values

[Antonio Terceiro]

Hi,

On Wed, Nov 30, 2016 at 07:11:00PM +0000, Ximin Luo wrote:
> Antonio Terceiro:
> > On Wed, Nov 30, 2016 at 05:52:04PM +0100, Ximin Luo wrote:
> >> Package: devscripts
> >> Version: 2.16.10
> >> Severity: normal
> >> Tags: patch
> >>
> >> Dear Maintainer,
> >>
> >> Running debrepro on glibc causes an infinite loop in the second build (13
> >> days+ build before I interrupted it). I didn't yet figure out the root cause
> >> of this in the glibc buildscripts, but faketime causing problems like this is
> >> a known issue with it, and people are not really expected to work around it.
> >>
> >> So debrepro should at least document this, and ideally make it possible to
> >> disable the time variation or do something else for it. For example, I could
> >> make the glibc build work by instead using:
> >>
> >>   vary 'fakeroot debian/rules binary' \
> >>     'faketime "@$SOURCE_DATE_EPOCH" fakeroot debian/rules binary'
> > 
> > the current version is not calling debian/rules directly anymore, nor has
> > $SOURCE_DATE_EPOCH. it looks like this:
> > 
> >   vary 'dpkg-buildpackage -b -us -uc' \
> >     'faketime +213days+7hours+13minutes dpkg-buildpackage -b -us -uc'
> > 
> > can you please make sure you are running the latest version, and if so, let me
> > now if it still doesn't work for you?
> > 
> 
> Hi Antonio, the bug is about the +213days value, so based on what you
> described it would still exist in the new version. I will test it
> again to confirm, but this will take a few more days.
> 
> The suggested fix is to use a value that is in the past instead of the
> future, but still after the latest entry in d/changelog. One doesn't
> have to set SOURCE_DATE_EPOCH, merely calling dpkg-parsechangelog
> would be fine.

Can you try this instead:

future=$(date -d '+213days+7hours+13minutes' +%s)
faketime "@$future" dpkg-buildpackage -b -us -uc

?
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