Code review comment for lp:~wgrant/launchpad/distroseries-source-format-selection-db

> Thanks William.
>
> If I understand correctly, this patch says "different releases of a distro
> (Debian or Ubuntu) support different source package formats", and "source
> package format support is determined primarily by distro series".

Those two statements are correct.

> If these two statements are true, I'm happy for this patch to land. I'd really
> like some sort of external reference to back it up though. (How many times can
> I use "Citation needed" outside of a wikipedia article before it becomes
> trite?)

The supported source formats are technically defined by the version of dpkg in
the series, however on top of that it's also a matter of distro policy.

I'm not sure of a better way to do it. This is also how dak does it, but if you
have alternative ideas I would love to know them.