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==========================
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Using ``bzr version-info``
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==========================
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This document describes ways of using ``bzr version-info`` as part of a
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build process to embed version information into a final project.
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TODO: Figure out how to attach into ``setup.py``
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If using a Makefile to build your project, you can generate the version
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information file as simply as::
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bzr version-info --format=python > library/_version.py
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This generates a file which contains 3 dictionaries:
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* `version_info`: A dictionary containing the basic information about the
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* `revisions`: A dictionary listing all of the revisions in the
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history of the tree, along with the commit times and commit
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message. This defaults to being empty unless ``--all`` or
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``--include-history`` is supplied. This is useful if you want to
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track what bug fixes, etc, might be included in the released
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version. But for many projects it is more information than needed.
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* `file_revisions`: A dictionary listing the last-modified revision
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for all files in the project. This can be used similarly to how
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``$Id$`` keywords are used in CVS-controlled files. The last
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modified date can be determined by looking in the ``revisions``
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map. This is also empty by default, and enabled only by ``--all``
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or ``--include-file-revisions``.
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Most information about the contents of the project can be cheaply
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determined by just reading the revision entry. However, it can be useful
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to know if the working tree was completely up-to-date when it was
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packaged, or if there was a local modification. By supplying either
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``--all`` or ``--check-clean``, ``bzr`` will inspect the working tree, and
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set the ``clean`` flag in ``version_info``, as well as set entries in
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``file_revisions`` as ``modified`` where appropriate.
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vim: tw=74 ft=rst spell spelllang=en_us