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Asked: 2026-05-18T21:10:55+00:00

I have an SVN repository containing several components: LibraryA LibraryB – depends on LibraryA

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I have an SVN repository containing several components:

  • LibraryA
  • LibraryB – depends on LibraryA
  • Application – depends on LibraryB and LibraryA

More detailed structure (branches and tags are not related to the problem):

  • LibraryA
    • LibraryA_code
  • LibraryB
    • LibraryB_code
    • svn:externals to a fixed revision R1 of LibraryA_code
  • Application
    • Application_code
    • svn:externals to a fixed revision R2 of LibraryA_code
    • svn:externals to a fixed revision R3 of LibraryB_code

The problem I’m trying to solve is automatic detection of situation when R2 differs from R1 (breaking expectations of LibraryB_code) and notification about this (e.g. build failure).

I’ll describe in an answer the only solution which I see for now, but I hope for something more elegant 🙂

Environment: Windows, Visual Studio, SVN.

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1 Answer

  1. Editorial Team

    When you modify the svn:externals property of Library B and commit this change, you create a new revision of Library B. This means, the Application repository is still consistent. You
    only need to worry when you modify an svn:externals property of Application itself.

    This case can be dealt with in a repository hook for the Application repository. That hook checks out the specified revision of Library B to a temporary directory and compares its required version of Library A with that of the version required by the application. See Repository Hooks for a list of available hooks.

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