Re: how to work in hirarchical git model?

> From: Johan Herland <johan@herland.net>
> 
> On Wednesday 17 December 2008, Gili Pearl wrote:
> > ----- Original Message ----
> >
> > > From: Johannes Sixt 
> > > Gili Pearl schrieb:
> > > > Here is one problem I saw when trying to work in the three-level
> > > > model. At some point, I had the following setup:
> > > >
> > > > top-level : A----B----C----D
> > > >                  \
> > > >                    \
> > > > mid-level1:        K----L----M
> > > >                          \
> > > >                            \
> > > > low-level1:                X----Y
> > > >
> > > > The maintainer of mid-level1 has decided that commits K L M are ready
> > > > to be merged into the top-level repo. So he rebased on top-level
> > > > before asking 'please pull', but after that the low-level was not
> > > > able to rebase on the mid-level any more.
> > >
> > > In this model, the mid-level1 maintainer should *not* rebase against
> > > top-level. Rather, he should ask the top-level maintainer to *merge*
> > > K-L-M.
> >
> > But what if K-L-M conflict with C-D? The one who should take care about
> > it is  the mid-level1 maintainer (or possibly one of the low-level1
> > maintainers).
> 
> If there is a merge conflict, mid-level1 maintainer will typically merge D 
> and M into a new merge commit N:
> 
> top-level : A----B----C----D
>               \              \
>                 \              \
> mid-level1:    K----L----M----N
> 
> ...and then ask top-level maintainer to merge N (which should have no 
> conflicts by now). The merge can also be done by low-level1 developer.
> 
> > > > So what is the right working flow for us?
> > >
> > > The only ones who should be allowed to rebase are developers at the
> > > lowest level. Everyone else should only pull or merge.
> >
> > I still don't see clearly what happens next in the example above when the
> > low level developr wants to push X-Y upstream? On which branch should he
> > rebase? Need he rebase on mid-level (where K-L-M were already
> > merged upstream), or maybe direclty on the top-level??
> 
> If you're a leaf developer (i.e. allowed to rebase), you should rebase 
> against your immediate upstream's branch. In this example, that is 
> mid-level1's branch.
> 
> 
> Have fun!
> 
> ...Johan
> 
> -- 
> Johan Herland, 
> www.herland.net