Bug#718331: lintian: Please allow .deb with uncompressed data.tar member

[Guillem Jover <guillem@debian.org>]

Package: lintian
Version: 2.5.15
Severity: wishlist
Control: block -1 by 718329 718330

Hi!

The lintian checks seems to reject uncompressed data.tar .deb members,
as specified by deb(5), which have been supported since dpkg 1.10.24.

At least the kernel team is currently using «dpkg-deb -Zgzip -z0» on
linux-source-3.10, which generates an uncompressed data.tar.gz member
(which TBH in a strict sense it's bogus for dpkg to create), because
otherwise dak rejects uncompressed .deb data.tar members by way of
lintian.

Take into account that the Debian archive should probably continue
rejecting those for now until at least python-apt and apt are fixed to
support these members. I guess this could be fixed in lintian, and still
get dak to reject them, in such case please ignore the blocks.

dpkg-deb calls that "compressor" «none», in case you'd like to have
some term consistency.

In any case uncompressed data.tar members are useful in general, when
the contents are all already compressed and there's no gain in
recompressing the member again. AFAIK debdelta is also using those
when reconstructing .debs to feed to dpkg, to avoid duped work.

Thanks,
Guillem