Re: organizing multiple repositories with dependencies

> Hilco Wijbenga <hilco.wijbenga@gmail.com> writes:
>
>> I'm assuming that if you have subproject S in umbrella project U and a
>> branch "topic" in U then that same branch should exist in S.
>
> No, I think that is actually very rare.  If topic branches really should
> be mirrored then U and S should be one repository.  They are too closely
> coupled to be separated.  But see the but about git-subtree and topic
> branches below.

>>> Of course, this is entirely driven by git-subtree's model of actually
>>> incorporating subproject history into one big umbrella repository.
>>> There is no separation between the subprojects and umbrella projects.
>>> It's one giant history.  Therefore, push/pull to/from subprojects are
>>> explicit operations.  That's probably not the best model for every
>>> situation but I find it very nice.
>>
>> I do not have enough (okay, any) experience with subtree to comment on
>> that. The first part seems just what I want. I'm not sure about the
>> explicit pushing/pulling part. That sounds too much like asking for
>> the sort of problems that scared us away from submodules. Hopefully,
>> I'm dead wrong. :-)
>
> With subtrees, a topic branch in the umbrella project WILL be reflected
> in the subproject because it is really one big repository.  It's a
> little inconvenient to subtree push a new tag at the moment.  You have
> to do a subtree split to a new branch and then push the branch to the
> original component repository.  That's one thing I want to improve in
> the short term.  I have found a need for then when creating release
> tags.

> But still, it seems odd to me that you'd create a topic branch in U and
> then want to push it to a separate S repository.  Topic branches are by
> nature ephemeral and I have never had a need to do something like that.
> It just seems to go against the grain of what a topic branch is.  As I
> said above, release tags and such are in a different category and that
> is the main target of the subtree push enhancements I want to make.