Tagging builds in subversion

At the end of every build I like to add a tag to the project source repository. Although the build log contains the revision of the source being built and so the build can be re-created, I like the fact that all the information about the source and the build is in one place.

  <target name="tag-build" description="tag the build revision" >
     <svn javahl="false">
        <status path="${basedir}" revisionProperty="svn.revision" />
     </svn>
     <echo message="Tagging revision ${svn.revision} as tag ${label}" />
     <svn username="cruise" password="cruise" javahl="false">
        <copy srcURL="http://repository/path/trunk" revision="${svn.revision}" destUrl="http://repository/path/tags/${label}" message="Cruise: Tagging build ${label}" />
     </svn>
  </target>