patches-applied historical imports (usd import)

[Ian Jackson]

Robie Basak writes ("Re: patches-applied historical imports (usd import)"):
> On Mon, Jan 09, 2017 at 01:45:52PM +0000, Ian Jackson wrote:
> > Ideally you and I could agree on a commit structure for the imported
> > packages, and metadata processing rules, so that the commits are
> > identical (not just the trees).
> 
> By "commits are identical", are you including parent commit hashes? Or
> just everything else?

It's true that not all of the parent hashes could be identical.

dgit imports orig tarballs in a way that is supposed to produce a
stable commit hash for each tarball, so that different revisions of
the same upstream version have the upstream as a common ancestor.

Does Nish's importer try to generate a fast-forwarding upstream
branch ?  If not then part of the imported commit structure could be
the same.

Ian.

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