Fix building of Python package (#121)

* Try to fix building Python package

* Rename github Action

* Test to add an init

* More specific include

* Disable include

* Remove __init__

* Clean up

.github/workflows/package.yml

@@ -0,0 +1,30 @@
+name: Python package
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 2
+
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.10'
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install build virtualenv
+
+    # PyPI package
+    - name: Build
+      run: |
+        python -m build

pyproject.toml

@@ -159,8 +159,7 @@ convention = 'google'
 # ----- setuptools --------------------------------------------------------
 #
 # Find all (sub-)modules of the Python package
-[tool.setuptools.packages]
-find = {namespaces = false}  # Disable implicit namespaces
+[tool.setuptools.packages.find]
 
 [tool.setuptools.dynamic]
 version = {attr = 'sphinxcontrib.katex.__version__'}