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Pulling a subdirectory into it's own repository with full history

From: Terence Lewis <tlewis_at_tsti.co.za>
Date: 2006-07-10 12:27:52 CEST

I've got a repository that includes a whole bunch of programs all related to
the same project. However, one of the modules is more reusable than I'd
originally anticipated, and I'd like to move it out into its own repository
(I don't want this project to "own" the module anymore). The problem is I'd
then like to remove it from the old repository and write a script to draw
the latest version from the new repository. This means I need to carry the
entire history for the folder into the new repository.
What is the best way to go about achieving this? My initial ideas are:
1) Make a copy on the server of the repository and remove everything except
this module from the copy. This works, (I've tried it), but I've got a
situation now where I've got a huge repository with almost 3000 commits in
it, for a tiny little 16 Kb dll that's going to be reused in other projects.
I.e it works, but it's ugly, and I have to wade through tons of unrelated
and confusing commit logs.
2) Make a branch in the original repository, and delete everything else out
of the branch. Then create a new repository and use a svn:externals to make
the new repository draw the files in from the branch in the old repository.
3) Some form of scripted approach where the script can export the successive
versions of the module from the old repository, and then check them into the
new repository using the original commit messages.
Does anybody have any suggestions or lessons learned I can benefit from?
Terence Lewis
Received on Mon Jul 10 13:37:43 2006

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