update pypi publish workflow (#120)

Author: andersy005

.github/workflows/pypipublish.yaml

@@ -1,21 +1,85 @@
-name: Upload Python Package
-
+name: Build distribution
 on:
   release:
-    types: [created]
+    types:
+      - published
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
 jobs:
-  deploy:
+  build-artifacts:
+    runs-on: ubuntu-latest
+    if: github.repository == 'xarray-contrib/datatree'
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-python@v2
+        name: Install Python
+        with:
+          python-version: 3.8
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install build
+
+      - name: Build tarball and wheels
+        run: |
+          git clean -xdf
+          git restore -SW .
+          python -m build --sdist --wheel .
+
+
+      - uses: actions/upload-artifact@v2
+        with:
+          name: releases
+          path: dist
+
+  test-built-dist:
+    needs: build-artifacts
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-python@v2
+        name: Install Python
+        with:
+          python-version: '3.10'
+      - uses: actions/download-artifact@v2
+        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
+        if: github.event_name == 'push'
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install dist/xarray-datatree*.whl
+          python -c "import datatree; print(datatree.__version__)"
+
+  upload-to-pypi:
+    needs: test-built-dist
+    if: github.event_name == 'release'
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - name: Build distributions
-      run: |
-        $CONDA/bin/python -m pip install build
-        $CONDA/bin/python -m build
-    - name: Publish a Python distribution to PyPI
-      if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
-      uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        user: ${{ secrets.PYPI_USERNAME }}
-        password: ${{ secrets.PYPI_PASSWORD }}
+      - uses: actions/download-artifact@v2
+        with:
+          name: releases
+          path: dist
+      - name: Publish package to PyPI
+        uses: pypa/[email protected]
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_PASSWORD }}
+          verbose: true

pyproject.toml

@@ -4,6 +4,7 @@ requires = [
     "wheel",
     "setuptools_scm[toml]>=3.4",
     "setuptools_scm_git_archive",
+    "check-manifest"
 ]
 
 [tool.setuptools_scm]