[git-buildpackage] Would it be possible for pristine-tar to not be an absolute path?

[Guido Günther]

Hi,
On Thu, Jan 11, 2018 at 02:57:03PM -0800, Nish Aravamudan wrote:
> On Sun, Jan 7, 2018 at 11:09 AM, Guido Günther <agx at sigxcpu.org> wrote:
> > Hi,
> > On Fri, Jan 05, 2018 at 09:55:30PM -0800, Nish Aravamudan wrote:
> >> Hi Guido,
> >>
> >> On Wed, Aug 30, 2017 at 12:47 PM, Guido Günther <agx at sigxcpu.org> wrote:
> >>
> >> <snip>
> >>
> >> >> To be clear, we only use gbp for orig tarball handling currently (we
> >> >> import-orig the tarballs published for Debian & Ubuntu, and use
> >> >> buildpackage (eventually export-orig, once it's available) to get the
> >> >> tarballs back out).
> >> >
> >> > gbp export-orig is already in the versions in experimental. It will gain
> >> > some more features in the near future (like checking out arbitrary
> >> > versions without having a working copy).
> >>
> >> Have the parenthetical changes landed yet? Or does both
> >> gbp-buildpackage (when using pristine-tar, or not) and gbp-export-orig
> >> only extract tarballs for HEAD?
> >
> > gbp-buildpackge extracts tarballs for the version you're building (I
> > think that's the only thing that makes sense). gbp export-orig should
> > support exporting any version given a debian revision:
> >
> >     gbp export-orig 10.0.1-1
> >
> > We could assume '-1' if not given:
> >
> >     gbp export-orig 10.0.1
> >
> > I should be a simple as fetching the right DebianSource in main() but I
> > did not get around to look into that.
> 
> I took a quick look at this and DebianSource refers to a GbpVFS
> interface. Is that supposed to be GitVfs? So if a version is provided

That's just a typo in the constructor docs. Thanks for pointing this
out. GitVfs is correct. 

> on the command-line, I would do a lookup from that to a Git tree,
> which I can then instantiate the GitVfs object from?

You don't even need to lookup the tree. Just convert the given version
to tag and then do:

    https://github.com/agx/git-buildpackage/blob/master/gbp/scripts/pq.py#L183

Cheers,
 -- Guido