Updating dpkg-buildflags to enable reproducible=+fixfilepath by default

[Vagrant Cascadian]

On 2020-11-14, Sune Vuorela wrote:
> On 2020-11-13, Vagrant Cascadian <vagrant at reproducible-builds.org> wrote:
>> If it could be fixed at the core for QFINDTESTDATA, that would be nicer
>> than fixing 20-30 packages individually, though we're not there right
>> now.
>
> Unfortunately, only like 10% of the relevant packages have test suites
> enabled and run, because gettings things to work reliable is sometimes
> hard.

That is a a bit of a surprise!

So, based on your estimate and the current packages known to be
affected, Debian might have an additional 300 packages that might
someday enable test suites. That is ~1% of the archive that would need
to make a one-line change in debian/rules if the maintainers enable test
suites for those packages.

Are there any templates or documentation used for such packages that
might be able to facilitate the process?


> Adding more hurdles does not help. 
> I think this is a hurdle we do not need.

To me, a one-line change in packaging seems like a quite small hurdle in
the short-term, but clearly you do not agree.

So it really comes down to applying opt-in patches for hundreds (maybe
thousands) of packages, or an opt-out change for somewhere in the
ballpark of tens or hundreds of packages.

Long-term, of course it would be more ideal to fix QFINDTESTDATA to be
compatible with -ffile-prefix-map/-fmacro-prefix-map compiler flags
being used to strip the build path from the compiled outputs; this would
solve the issue for potentially hundreds of packages and would make the
issue essentially moot.


live well,
  vagrant
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