Bug#829744: Add new-package-should-not-package-python2-module tag

[Chris Lamb <lamby@debian.org>]

Mattias Klose wrote:

> Please only trigger this warning if no corresponding
> python3 module is uploaded (at least until after the
> stretch release).

Are we sure? The idea is to dissuade the Python 2 module from being
packaged in the first place (on the principle that it is one less to
remove later) rather than to promote that the Python 3 module is
also packaged.

Otherwise this tag's semantics are really along the lines of "don't
forget to package the Python 3 version!" which is already somewhat
implicit in the ecosystem and causes us more work down the road.


Regards,

-- 
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     : :'  :     Chris Lamb
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