Bug#793680: libdevice-cdio-perl: please ensure that package is always built from source

[gregor herrmann]

On Sun, 26 Jul 2015 14:24:35 +0100, Chris Lamb wrote:

> While working on the "reproducible builds" effort [1], we have noticed
> that libdevice-cdio-perl could not be built reproducibly, but more
> crucially that the files generated by SWIG are non-deterministically
> re-generated (or not).

Thanks for noticing!
 
> The files in question are lib/perl*.pm. This was detected because SWIG
> was adding a "generated by version X", where X appears to flap between
> the generated versions of the file shipped with libdevice-cdio-perl (as
> it happens, version 1.3.40) and the current version of SWIG in unstable
> (at the time of writing, 2.0.12)
[..]
> .. but I wonder if this is a deeper problem with Module::Build and thus
> affecting the entire archive. For this reason, I have avoided the
> "patch" tag.

This is all handwritten code in Build.PL (with some logic to check if
the files should be recreated) so I don't think we have a general
problem here.

Funny is the commented out line:

   191  #distclean : unlink lib/perliso9660.pm, lib/perlmmc.pm lib/perlcdio.pm

which seems to show that upstream already had the same idea :)


Cheers,
gregor, preparing an upload

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