How to resolve the SVN:externals problem

I am using SVN for my project. I have two repositories called repo1 and repo2. In each repository, I have created a branch called branch1 in both repositories. For one of the modules in branch1 of repo2 called module1, an svn:external has been defined and is set to module1 of branch1 in Repo1.

But Now I created another branch called branch2 in repo1 and repo2 that is a copy of branch1 of both repos. Now my module1 in branch2 of repo2 still points to module1 开发者_开发技巧of branch1 in repo1. But it should refer to module1 of branch2 in repo1.

Is there any way were we can change svn:externals automatically when we do a SVN copy or svn branch?

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I don't think this is possible. I don't think there is a way for svn to know if you want the svn externals to refer to branch2 or branch1.

Update: This discussion looks useful.

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No, what you need is not possible to be done by svn automatically. Creating a branch copies the entire folder in svn as well as all of its external references.

But you may write your own scripts to create the branch and update the externals.

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The definitive resource on svn:externals shows some possibilities for "relative" links. But none of them can cross repository borders the way you want.

This leaves the following options:

• Put the related projects into the same repository and into the same branch directory and use relative svn:external links, or
• Use and/or hack a tool like svncopy which purpose is to deal with svn:externals. This tool is in the subversion source tree in contrib/client-side/svncopy.
• Or you can put branching/tagging into your build system.

None of these options is a nobrainer.