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Switch to setuptools_scm.
A few noteworthy points: - The contents in the sdist now exactly match what `git archive` would include; this avoids having to additionally keep track of things in MANIFEST.in (as noted in contributing.rst). - The `__version__` of an editable install is no longer recomputed at each import (as was done with `versioneer`, but only whenever the project is (re)installed; this can actually save quite a bit of time when working with many editable installs as each version recomputation requires shelling out a subprocess. (If really wanted we could keep the old behavior by optionally adding a runtime dependency on setuptools_scm and calling `setuptools_scm.get_version` in `matplotlib/__init__.py`.)
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‎.flake8

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@@ -35,7 +35,6 @@ exclude =
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doc/gallery
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doc/tutorials
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# External files.
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versioneer.py
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tools/gh_api.py
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tools/github_stats.py
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.tox

‎.git_archival.txt

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ref-names: $Format:%D$

‎.gitattributes

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*.ppm binary
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*.svg binary
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*.svg linguist-language=true
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lib/matplotlib/_version.py export-subst
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.git_archival.txt export-subst

‎.github/workflows/tests.yml

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# Install dependencies from PyPI.
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python -mpip install --upgrade $PRE \
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cycler kiwisolver numpy pillow pyparsing python-dateutil \
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cycler kiwisolver numpy pillow pyparsing python-dateutil setuptools-scm \
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-r requirements/testing/travis_all.txt \
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${{ matrix.extra-requirements }}
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‎.gitignore

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# tox testing tool
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.tox
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setup.cfg
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# generated by setuptools_scm
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lib/matplotlib/_version.py
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# OS generated files #
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######################

‎MANIFEST.in

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‎doc/conf.py

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try:
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SHA = subprocess.check_output(
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['git', 'describe', '--dirty']).decode('utf-8').strip()
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# Catch the case where git is not installed locally, and use the versioneer
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# Catch the case where git is not installed locally, and use the setuptools_scm
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# version number instead
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except (subprocess.CalledProcessError, FileNotFoundError):
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SHA = matplotlib.__version__

‎doc/devel/contributing.rst

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* If you have added new files or directories, or reorganized existing
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ones, make sure the new files are included in the match patterns in
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:file:`MANIFEST.in`, and/or in *package_data* in :file:`setup.py`.
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in *package_data* in :file:`setupext.py`.
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C/C++ extensions
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----------------

‎doc/devel/release_guide.rst

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Congratulations, the scariest part is done!
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.. [#] The tarball that is provided by GitHub is produced using `git
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archive <https://git-scm.com/docs/git-archive>`__. We use
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`versioneer <https://github.com/warner/python-versioneer>`__
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which uses a format string in
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.. [#] The tarball that is provided by GitHub is produced using `git archive`_.
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We use setuptools_scm_ which uses a format string in
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:file:`lib/matplotlib/_version.py` to have ``git`` insert a
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list of references to exported commit (see
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:file:`.gitattributes` for the configuration). This string is
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then used by ``versioneer`` to produce the correct version,
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then used by ``setuptools_scm`` to produce the correct version,
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based on the git tag, when users install from the tarball.
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However, if there is a branch pointed at the tagged commit,
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then the branch name will also be included in the tarball.
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git archive v2.0.0 -o matplotlib-2.0.0.tar.gz --prefix=matplotlib-2.0.0/
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.. _git archive: https://git-scm.com/docs/git-archive
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.. _setuptools_scm: https://github.com/pypa/setuptools_scm
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If this is a final release, also create a 'doc' branch (this is not
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done for pre-releases)::

‎lib/matplotlib/__init__.py

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import tempfile
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import warnings
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import numpy
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# cbook must import matplotlib only within function
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# definitions, so it is safe to import from it here.
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from . import _api, cbook, docstring, rcsetup
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from . import _api, _version, cbook, docstring, rcsetup
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from matplotlib.cbook import MatplotlibDeprecationWarning, sanitize_sequence
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from matplotlib.cbook import mplDeprecation # deprecated
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from matplotlib.rcsetup import validate_backend, cycler
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import numpy
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# Get the version from the _version.py versioneer file. For a git checkout,
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# this is computed based on the number of commits since the last tag.
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from ._version import get_versions
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__version__ = str(get_versions()['version'])
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del get_versions
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_log = logging.getLogger(__name__)
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}"""
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def __getattr__(name):
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if name == "__version__":
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import setuptools_scm
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global __version__ # cache it.
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# Only shell out to a git subprocess if really needed.
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root = Path(__file__).resolve().parents[2]
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if (root / ".git").exists():
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__version__ = setuptools_scm.get_version(
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root=root,
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version_scheme="post-release",
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local_scheme="node-and-date",
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fallback_version=_version.version,
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)
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else: # Get the version from the _version.py setuptools_scm file.
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__version__ = _version.version
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return __version__
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raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
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def _check_versions():
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# Quickfix to ensure Microsoft Visual C++ redistributable
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return inner
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_log.debug('matplotlib version %s', __version__)
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_log.debug('interactive is %s', is_interactive())
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_log.debug('platform is %s', sys.platform)
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_log.debug('loaded modules: %s', list(sys.modules))

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