[MERGE] Add BzrDir.get_branch_stacked_on_url
robertc at robertcollins.net
Tue Sep 2 02:24:35 BST 2008
On Mon, 2008-09-01 at 20:21 -0400, Aaron Bentley wrote:
> Jonathan Lange wrote:
> > On Tue, Sep 2, 2008 at 9:58 AM, Aaron Bentley <aaron at aaronbentley.com> wrote:
> >> Aaron Bentley has voted comment.
> >> Status is now: Waiting
> >> Comment:
> >> Why? Does Branch.open hit the stacked_on_url?
> > Yes, it does.
> Well, I'm not opposed to this as a stop-gap as long as you file a bug
> that we shouldn't open fallback branches until we know that we need them.
stacked_on_branches are always needed today, for the repository, branch
history etc to operate correctly. The repository has no way to call-back
to the branch to ask for other locations, and I'm not sure that would be
a good way to construct it anyhow.
> The patch as it stands assumes too much about the way branches are
> configured. This would fail spectacularly with a Subversion branch, if
> they supported stacking.
I agree that the BzrDirMetaDir implementation should indirect through
the format object of the branch though I will note that bzr-svn branches
are not a problem: subversion branches have their own BzrDir
implementation which means they already have an indirection point.
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