[petsc-dev] Updating MOAB version during download

[Satish Balay]

On Mon, 16 Jun 2014, Satish Balay wrote:

> On Mon, 16 Jun 2014, Vijay S. Mahadevan wrote:
> 
> > >    It is not the "default", it would be in certain branches, the issue comes up when those certain branches are merged into master. Then does master somehow lock onto the current commit of moab so that further changes don't break master. (Meanwhile other petsc branches may be tracking the further moab changes)
> > >
> > >    You are not thinking properly in terms of multiple petsc branches that may be tracking branches in other packages git repositories. How do we handle that with master and next?
> > 
> > Barry, I like this capability of tracking different dependency branch
> > based on the current feature branch but what gets confusing is when
> > you merge onto master or next. This assumes that if dmmoab-feature-1
> > tracks v4.6.1 and dmmoab-feature-2 tracks v4.6, then dmmoab-feature-2
> 
> Here I'm assuming you mean:
> 
> in 'dmmoab-feature-1' moab.py has url=v4.6.1
> [this url was updated either in dmmoab-feature-1 or a prior commit in master]
> 
> in 'dmmoab-feature-2' moab.py has url=v4.6
> [this url was updated either in dmmoab-feature-2 or a prior commit in
> master. But mostlikely its already in master]
> 
> > cannot be merged before dmmoab-feature-1 unless moab.py is changed
> > appropriately ? It should be fine for almost all use cases but just
> > trying to understand this statement better.
> 
> If I understand this correctly - 'git merge' should take care of it
> [either merge it automatically - if there is a conflict - prompt you
> to resolve it ] The order of merges shouldn't matter. [at the end of
> merge url=v4.6.1]
>

BTW: My assumption above is v4.6 and v4.6.1 have the same API.

If there is API change there are many possibilities dependin upon
the order of things.

If dmmoab-feature-1 (with v4.6.1) landed first in petsc-next/master
then you might have to upgrade dmmoab-feature-2 to v4.6.1 first and
then merge to next/master

Also I'm not sure how the current covention of url='latest-moab' would
help here. [if we have the constraint that url='latest-moab' should
not get into master]

Satish