[PATCH/RFC] Use submodule for dnspython

[Andrew Bartlett]

On Sun, 2015-05-10 at 20:31 +0200, Stefan (metze) Metzmacher wrote:
> Hi Jelmer,
> 
> > What changes for users
> > ======================
> > 
> > A consequence of this is that if "dnspython" is not installed on the
> > system and if samba wasn't cloned using 'git clone --recursive',
> > the user will get the following message during configure:
> 
> The problem is still that this only works for the current checkout
> and not for all branches/tags (all commits) in a repository.
> Unless this is fixed I'm against using submodules.

I've been chatting with Jelmer about this, and the way I see it, if 'git
checkout' doesn't also make the submodules update to match, then this is
a non-starter.  They need to be a bit more transparent than that, while
gaining us the advantage that we can point to a different revision by
SHA1, not having to import the actual tree and then (in a correctly
paranoid fashion) verify that a delta hasn't been introduced. 

It is this later feature that I'm after from submodules - being able,
for our third party code, to say 'it is JUST what you find at official
repo $HERE, see the SHA1 matches!', rather than re-running the update
script and hoping for no non-while space differences. 

Andrew Bartlett

-- 
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba