On Wed, Mar 27, 2013 at 01:45:21AM +0100, Bernhard R. Link wrote:
> * Dominic Hargreaves <d...@earth.li> [130326 23:36]:
> > To be clear, the issues is that in the upstream branch, following the
> > import, 'git log' shows the expected history, but 'git log etc' doesn't.
> >
> > Yes, once I'd merged upstream-third-party-source into upstream, as
> > git-dpm seems to expect, I ran git init like this:
> >
> > git-dpm init --record-patch-name --component 
> > ../request-tracker4_4.0.7.orig-third-party-source.tar.gz 
> > ../request-tracker4_4.0.7.orig.tar.gz upstream
> 
> The problem seems to be the following: with components reprepro
> creates one commit for the .orig.tar file imported and nothing else in
> it (so that it can point pristine-tar to that commit as that will
> generate a smaller delta than any other commit with more stuff).
> 
> This commit is then merged into the upstream branch.
> 
> Now if git is asked to look for where that etc directory is from
> looks at the merge, sees that everything is available on the right
> hand side and decides to use that side instead of the other side,
> and thus decides that it suffices to only show that part of the
> merge in the history and not the other side. (usually I'd assume
> git to prefer the most leftish merge and not go into the other
> parent, but perhaps that directory is just too similar to that parent,
> so it no longer looks at the first parent).
> 
> You get to see the parts of the history git considered uninteresting
> that way by adding "--full-history" to git log.
> 
> > I'm still looking for ideas about what to do next. git-dpm people,
> > hoping this will sound familiar to you...
> 
> The situation might be mitigated by having some history for that
> part. If a commit would be created with
> git-dpm import-tar -p upstream/4.0.7 
> ../request-tracker4_equest-tracker4_4.0.10.orig.tar.gz
> and the result of that commit is given via -p to
> git-dpm import-new-upstream --component ...
> then no such commit should be made and the problem should not happen.

Thanks, that has done the trick! Do you think this worth filing as
a bug (even at severity wishlist) on git-dpm so that this can be done
automatically in future?

Cheers,
Dominic.

-- 
Dominic Hargreaves | http://www.larted.org.uk/~dom/
PGP key 5178E2A5 from the.earth.li (keyserver,web,email)

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