[ros-users] multiple released stacks in git repositories?

[Ruben Smits]

On Wednesday 19 January 2011 07:43:20 Steven Bellens wrote:
> 2011/1/19 Ken Tossell <ktossell at umd.edu>:
> > Hi,
> > 
> > I'm trying to find out the best way to manage released stacks using
> > Git. Git's versioning is based on repository-wide tags and branches,
> > whereas the build system expects to use path-based, stack-specific
> > tags like in SVN.
> > 
> > It would be nice to keep multiple related stacks in one Git
> > repository, and I think having just a few branches (master,
> > unstable_released, cturtle, cturtle_released) for the whole repository
> > could work, but there's the issue of version tags (stack A would get
> > tagged along with stack B), and the build system requires the stack to
> > be at the root of the repository.
> > 
> > Additionally, while a stack maintainer could manually port the changes
> > in stack_a from the cturtle branch into the cturtle_release branch,
> > the release scripts would also copy all of the other cturtle stacks
> > into cturtle_release at the same time.
> > 
> > Has anyone come up with good ROS release practices for Git without
> > splitting up their repository?
> 
> The git submodule functionality offers what you need, I think:
> 
> http://www.kernel.org/pub/software/scm/git/docs/git-submodule.html
> 
> We're currently converting our svn repos to git as well and use the
> submodule a lot: all stacks reside in separate repositories, and we
> have one global repo which just links to all these repos using git
> submodules. Major disadvantage is the fact that you have to use it to
> point at a specific commit and you can't point to e.g. a branch or a
> tag.

You can perfectly make it point to a specific tag which makes it very easy to 
only include working (release) tags in your global repository.

Ruben

> regards,
> 
> Steven
> 
> > Thanks
> >  - Ken
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