What constitutes the "identity" of a changeset?

[Paul Moore]

On 28/03/2008, Paul Moore <p.f.moore at gmail.com> wrote:
> On 28/03/2008, Jelmer Vernooij <jelmer at samba.org> wrote:
>  > Can you provide some more details about this? Was the same conversion
>  >  tool used in both cases? What version of bzr-svn? If you were pulling
>  >  from two svn repositories with the same UUID, this would be a serious
>  >  bzr-svn bug.
>
>  I doubt very much that this was a bzr-svn bug. However, if I do get a
>  chance, I'll try to reproduce what I did and see if I can get the same
>  message. If I do, I'll let you know and you can tell me what I did
>  wrong :-)

I just remembered what I did, and tried it again with the same result.

I have a svn repository at http://lua4nt.googlecode.com/svn/trunk and
a local svncloned mirror at C:\SVN\lua4nt\trunk. If I do a partial
branch from the clone

bzr branch -r 5 file:///C:/SVN/lua4nt/trunk

and then go into the branch and try to pull from the remote repository

bzr pull http://lua4nt.googlecode.com/svn/trunk

I get the error

http://lua4nt.googlecode.com/svn/trunk is permanently redirected to
http://lua4nt.googlecode.com/svn/trunk/
Initialising Subversion metadata cache in C:/Documents and
Settings/Gustav/Application
Data/bazaar/2.0\svn-cache\3b297215-a52e-0410-8a18-b5b094911f1d
bzr: ERROR: These branches have diverged. Use the merge command to
reconcile them.

It seems to me that all this is saying is that bzr-svn cannot tell
that the local mirror and the remote repository are the same, and so
cannot match up the revisions. This is a shame, because it means I
can't create a bzr mirror starting from a local clone (for speed) and
then switch to a remote pull (to allow me to drop the local svn
mirror). But it's not a bug, unless Bazaar's concept of revision
identity *makes* it a bug...

Hope this helps,
Paul.