Fix version (#113)

* fix version

* Update conf.py

Author: malmans2

datatree/__init__.py

@@ -1,15 +1,20 @@
-# flake8: noqa
-# Ignoring F401: imported but unused
-
-from pkg_resources import DistributionNotFound, get_distribution
-
 # import public API
 from .datatree import DataTree
 from .io import open_datatree
 from .mapping import TreeIsomorphismError, map_over_subtree
 
 try:
-    __version__ = get_distribution(__name__).version
-except DistributionNotFound:  # noqa: F401; pragma: no cover
-    # package is not installed
-    pass
+    # NOTE: the `_version.py` file must not be present in the git repository
+    #   as it is generated by setuptools at install time
+    from ._version import __version__
+except ImportError:  # pragma: no cover
+    # Local copy or not installed with setuptools
+    __version__ = "999"
+
+__all__ = (
+    "DataTree",
+    "open_datatree",
+    "TreeIsomorphismError",
+    "map_over_subtree",
+    "__version__",
+)

datatree/tests/test_version.py

@@ -0,0 +1,5 @@
+import datatree
+
+
+def test_version():
+    assert datatree.__version__ != "999"

dev-requirements.txt

@@ -78,9 +78,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = "0.0.1"  # datatree.__version__
+version = datatree.__version__
 # The full version, including alpha/beta/rc tags.
-release = "0.0.1"  # datatree.__version__
+release = datatree.__version__
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

docs/source/conf.py

@@ -0,0 +1,14 @@
+[build-system]
+requires = [
+    "setuptools>=42",
+    "wheel",
+    "setuptools_scm[toml]>=3.4",
+    "setuptools_scm_git_archive",
+]
+
+[tool.setuptools_scm]
+write_to = "datatree/_version.py"
+write_to_template = '''
+# Do not change! Do not track in version control!
+__version__ = "{version}"
+'''

pyproject.toml

@@ -1,3 +1,36 @@
+[metadata]
+name = xarray-datatree
+description = Hierarchical tree-like data structures for xarray
+long_description_content_type=text/markdown
+long_description = file: README.md
+url = https://github.com/xarray-contrib/datatree
+author = Thomas Nicholas
+author_email = [email protected]
+license = Apache
+classifiers =
+    Development Status :: 3 - Alpha
+    Intended Audience :: Science/Research
+    Topic :: Scientific/Engineering
+    License :: OSI Approved :: Apache Software License
+    Operating System :: OS Independent
+    Programming Language :: Python
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
+
+[options]
+packages = find:
+python_requires = >=3.8
+install_requires =
+    xarray >=2022.05.0.dev0
+
+[options.packages.find]
+exclude =
+    docs
+    tests
+    tests.*
+    docs.*
+
 [flake8]
 ignore =
     E203 # whitespace before ':' - doesn't work well with black