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RE: [Xen-devel] Repositories and build system

To: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Subject: RE: [Xen-devel] Repositories and build system
From: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
Date: Wed, 29 Apr 2009 10:40:34 -0700 (PDT)
Cc: Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx>, Xen Developers <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>, "Zhai, Edwin" <edwin.zhai@xxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>
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> > "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.

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