Re: [Xen-devel] Repositories and build system

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

Dan Magenheimer wrote:

>>> "Pull and build all latest known stable components
>>> that work with xen-unstable changeset 19314"
>> That would require formal, machine-readable tracking of the
>> inter-version dependencies.  Since at the moment we can't reliably
>> accidentally avoid introducing cross-version breakage I don't think we
>> can reliably avoid buggy metadata either.
> 
> Understood.  But it is a big loss to be unable to do a bisect
> search for a bug.  With the proliferation of repositories
> and components, it may become necessary to impose some discipline
> to avoid the introduction of (undocumented) locksteps.
> 


I agree.
In fact I think we should start to write in clear letters when a commit
breaks xen\qemu compatibility, specifying the required changeset in the
other repository.
We could formally introduce this practice with the 3.5 development cycle.

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