Add GitHub workflow for PyPI releases

.github/workflows/pypi-release.yaml

@@ -0,0 +1,102 @@
+name: Build and Upload xbatcher to PyPI
+on:
+  release:
+    types:
+      - published
+  # Runs for pull requests should be disabled other than for testing purposes
+  #pull_request:
+  #  branches:
+  #    - main
+
+permissions:
+  contents: read
+
+jobs:
+  build-artifacts:
+    runs-on: ubuntu-latest
+    if: github.repository == 'xarray-contrib/xbatcher'
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-python@v4
+        name: Install Python
+        with:
+          python-version: 3.8
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install build twine
+
+      # This step is only necessary for testing purposes and for TestPyPI
+      - name: Fix up version string for TestPyPI
+        if: ${{ !startsWith(github.ref, 'refs/tags') }}
+        run: |
+          # Change setuptools-scm local_scheme to "no-local-version" so the
+          # local part of the version isn't included, making the version string
+          # compatible with PyPI.
+          sed --in-place "s/dirty-tag/no-local-version/g" pyproject.toml
+
+      - name: Build tarball and wheels
+        run: |
+          git clean -xdf
+          git restore -SW .
+          python -m build
+      - name: Check built artifacts
+        run: |
+          python -m twine check --strict dist/*
+          pwd
+          if [ -f dist/xbatcher-0.0.0.tar.gz ]; then
+            echo "❌ INVALID VERSION NUMBER"
+            exit 1
+          else
+            echo "✅ Looks good"
+          fi
+      - uses: actions/upload-artifact@v3
+        with:
+          name: releases
+          path: dist
+
+  test-built-dist:
+    needs: build-artifacts
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-python@v4
+        name: Install Python
+        with:
+          python-version: 3.8
+      - uses: actions/download-artifact@v3
+        with:
+          name: releases
+          path: dist
+      - name: List contents of built dist
+        run: |
+          ls -ltrh
+          ls -ltrh dist
+      - name: Verify the built dist/wheel is valid
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install dist/xbatcher*.whl
+          python -m xbatcher.util.print_versions
+      - name: Publish package to TestPyPI
+        uses: pypa/[email protected]
+        with:
+          password: ${{ secrets.TEST_PYPI_API_TOKEN }}
+          repository_url: https://test.pypi.org/legacy/
+          # verbose: true
+
+  upload-to-pypi:
+    needs: test-built-dist
+    if: github.event_name == 'release'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: releases
+          path: dist
+      - name: Publish package to PyPI
+        uses: pypa/[email protected]
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}
+          # verbose: true

doc/contributing.rst

@@ -246,3 +246,5 @@ Continuous integration is done with `GitHub Actions <https://docs.github.com/en/
 There is currently 1 workflow configured:
 
 - `main.yaml <https://github.com/xarray-contrib/xbatcher/blob/main/.github/workflows/main.yaml>`_ - Run test suite with pytest.
+- `pypi-release.yaml <https://github.com/xarray-contrib/xbatcher/blob/main/.github/workflows/pypi-release.yaml>`_ - Publish
+  wheels to TestPyPI and PyPI on a tagged release. The pull request trigger can be uncommented to test a release using Test PyPI.

pyproject.toml

@@ -6,22 +6,23 @@ requires = [
 build-backend = "setuptools.build_meta"
 
 [project]
-name = 'xbatcher'
-description = 'Batch generation from Xarray objects'
+name = "xbatcher"
+description = "Batch generation from Xarray objects"
+readme = "README.rst"
 license = {text = "Apache"}
 authors = [{name = "xbatcher Developers", email = "[email protected]"}]
 requires-python = ">=3.8"
 classifiers = [
-    'Development Status :: 4 - Beta',
+    "Development Status :: 4 - Beta",
     "License :: OSI Approved :: Apache Software License",
-    'Operating System :: OS Independent',
-    'Intended Audience :: Science/Research',
-    'Programming Language :: Python',
-    'Programming Language :: Python :: 3',
-    'Programming Language :: Python :: 3.8',
-    'Programming Language :: Python :: 3.9',
-    'Programming Language :: Python :: 3.10',
-    'Topic :: Scientific/Engineering',
+    "Operating System :: OS Independent",
+    "Intended Audience :: Science/Research",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Topic :: Scientific/Engineering",
 ]
 dynamic = ["version"]
 dependencies = [
@@ -53,12 +54,12 @@ repository = "https://github.com/xarray-contrib/xbatcher"
 include = ["xbatcher*"]
 
 [tool.setuptools_scm]
-version_scheme = 'post-release'
-local_scheme = 'dirty-tag'
+version_scheme = "post-release"
+local_scheme = "dirty-tag"
 fallback_version = "999"
 
 [tool.isort]
-profile = 'black'
+profile = "black"
 known_third_party = ["numpy", "pytest", "setuptools", "sphinx_autosummary_accessors", "torch", "xarray"]
 
 [tool.pytest.ini_options]

xbatcher/util/print_versions.py

@@ -63,3 +63,7 @@ def _get_module_version(modname):
     print("Dependency information:", file=file)
     for modname in deps:
         print(f"  {modname}: {_get_module_version(modname)}", file=file)
+
+
+if __name__ == "__main__":  # pragma: no cover
+    show_versions()