Submodule improvements

[Stefan (metze) Metzmacher]

Hi Jelmer,

> ping :)

I hope to find the time to write my findings down this week...

metze

> On Sun, May 24, 2015 at 03:48:32PM +0000, Jelmer Vernooij wrote:
>> On Thu, May 21, 2015 at 02:45:48PM +0200, Andrew Bartlett wrote:
>>> On Mon, 2015-05-18 at 20:23 +0000, Jelmer Vernooij wrote:
>>>> This patchset improves our handling of submodules in our build system,
>>>> by preventing developers build with outdated submodules if there are
>>>> any present. This should hopefully address the concerns that Andrew
>>>> raised in the last thread.
>>>>
>>>> While I was there, I also removed support for running Samba from a
>>>> bzr repository rather than Git. I'm pretty sure I was the only who
>>>> ever used that.
>>>
>>> Thanks Jelmer,
>>>
>>> I've pushed those with my review and then looked with metze to see what
>>> we could do to make this work.  He can speak for himself, but when
>>> demonstrating his concerns to me the major issue that he hit was the
>>> boundary conditions when moving back and forth (such as in a rebase)
>>> over the boundary where a submodule is put into use, with untracked
>>> files appearing.  
>> That should be a temporary issue while we migrate; once we have it's
>> only a minor nuisance (you have to rm -rf third_party/dnspython before
>> switching to an old branch).
>>
>> As a workaround, we could add the submodule in a different path
>> than where the original code used to live so they don't conflict. E.g.
>> bundled/dnspython rather than third_party/dnspython.
>>
>>> We did however show that the issues around initialisation of the
>>> submoudle git modules could be handled fairly well by the fact that
>>> submodule objects live in the .git directory, or a helper script for the
>>> original git clone/fetch.
>> What specifically doesn't work there that isn't handled by
>> --recursive?
>>
>> Cheers,
>>
>> Jelmer
>>
>> -- 
>> Jelmer Vernooij <jelmer at samba.org> - https://jelmer.uk/
> 

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