Bug#942673: warn about b-d on python3-all-dev and package not building for all supported python versions

["Chris Lamb" <lamby@debian.org>]

Hi again Matthias,

>   - if the binary package python3-* has at least extensions
>     built for one python version,

Ah, I guess this the crux of my question; how might Lintian check this
statically? From the list of filenames in the binary package? Is there
some binary package field I am missing...?

> The error should trigger,
> 
>   - if the .buildinfo lists more than one python3.X-dev,

Using the .buildinfo in Lintian is a little problematic as most
processes, tools and scripts pass the .changes, so if we could weaken
this to source packages that Build-Depend on python-all-dev then that
would actually catch a lot more instances.


Best wishes,

-- 
      ,''`.
     : :'  :     Chris Lamb
     `. `'`      lamby@debian.org 🍥 chris-lamb.co.uk
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