Update CMake and setuptools logic for the Python bindings

.github/workflows/ci.yml

@@ -214,12 +214,12 @@ jobs:
       fail-fast: false
       matrix:
         platform: [macos-latest, ubuntu-latest] #windows-latest,
-        # python-version: [3.5, 3.6, 3.7, 3.8]
-        python-version: [3.6]
+        python-version: [3.6, 3.7, 3.8, 3.9]
     runs-on: ${{ matrix.platform }}
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+      - run: git fetch --prune --unshallow
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with:
@@ -234,14 +234,24 @@ jobs:
         run: brew install eigen
       - name: Setup
         run: |
-          python -m pip install --upgrade pip
-          pip install pytest "pybind11[global]"
-          pip install -r requirements.txt
+          python3 -m pip install --upgrade pip
+          pip3 install build
       - name: Build
-        run: pip install .
+        run: pip3 install -v .[testing]
       - name: Test
         run: pytest
 
+      - name: Build sdist
+        if: contains(matrix.platform, 'ubuntu') && matrix.python-version == '3.6'
+        run: python3 -m build --sdist -o dist/
+      - name: Build wheel
+        run: python3 -m build --wheel -o dist/
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v2
+        with:
+          path: dist/*
+          name: dist
+
   # arm64:
   #   needs: [build-ubuntu]
   #   runs-on: ubuntu-latest

CMakeLists.txt

@@ -61,8 +61,15 @@ option(BUILD_PYTHON_BINDINGS "Build Python bindings with pybind11." OFF)
 option(BUILD_TESTING_PYTHON "Build Python tests only." OFF)
 
 if (BUILD_PYTHON_BINDINGS)
+
+  # Include the vendored FindPython3 resources
+  list(PREPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules")
+
+  find_package(Python3 REQUIRED COMPONENTS Interpreter Development.Module)
   find_package(pybind11 REQUIRED)
+
   add_subdirectory(python)
+
 endif()
 
 ###########

CONTRIBUTING.md

@@ -42,8 +42,7 @@ Let's install all dependencies for development and testing,
 
 ```terminal
 apt install libeigen3-dev
-python3 -m pip install "pybind11[global]" pytest
-python3 -m pip install -r requirements
+python3 -m pip install "pybind11[global]" pytest numpy
 ```
 
 We can now build **manif**, its Python wrappers and all tests,