Bug#574293: lintian: Add check for missing Vcs-* headers (experimental or pedantic)

[Jari Aalto <jari.aalto@cante.net>]

Raphael Geissert <geissert@debian.org> writes:
> I don't think it would be appropriate for lintian (even at the
> pedantic level) to warn about the lack of vcs headers.

Please consider at least "X" (experimental), or maybe "I". I'm not sure
what is the correct progression in severity: X, I, P ...?

- By A.D 2010 this culd be a signal to maintainers (especially Debian) to
  encourage them to start using services like Alioth.

- Sometimes, developer may have forgot to add Vcs-* headers, when lintian
  wasn't there to notify about them.

>  Maintainers not using a vcs simply won't find any use for it, and
> there's currently no way to indicate that no vcs is used.

It not about lone maintainers, but for others where it would be easier
to provide patches an updates (NMU, bug reports, etc).

It could also be argued that messages like these are not useful:

    P: package: no-upstream-changelog

The upstream could say that he sees no value of keeping ChangeLog for
himself is if he's the sole developer and not participating in a team.

Jari