Try to build wheels on Windows

.github/workflows/build-wheels.yml

@@ -1,18 +1,18 @@
 name: Build Wheels
 
 # Only run on new tags starting with `v`
-on:
-  push:
-    tags:
-      - 'v*'
+on: push
+  # push:
+  #   tags:
+  #     - 'v*'
 
 jobs:
   build_wheels:
     name: Build wheel on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-18.04, macos-latest]
+        os: [windows-latest]
 
     steps:
     - uses: actions/checkout@v2
@@ -25,6 +25,9 @@ jobs:
         CIBW_BUILD: "cp36-* cp37-* cp38-* cp39-*"
         CIBW_BEFORE_BUILD_MACOS: python -m pip install numpy Cython pybind11 && brew install glm
         CIBW_BEFORE_ALL_LINUX: curl -sL https://github.com/g-truc/glm/releases/download/0.9.9.8/glm-0.9.9.8.zip > glm.zip && unzip -q glm.zip && cp -r glm/glm/ /usr/include/
+        CIBW_BEFORE_BUILD_WINDOWS: curl -sL https://github.com/g-truc/glm/releases/download/0.9.9.8/glm-0.9.9.8.zip > glm.zip && unzip -q glm.zip
+        # CIBW_ENVIRONMENT_WINDOWS: "PIP_GLOBAL_OPTION=\"/I%GITHUB_WORKSPACE%\\glm\\glm\""
+        CIBW_ENVIRONMENT_WINDOWS: "PYDELATIN_INCLUDE_DIRS=./glm/glm"
 
     - uses: actions/setup-python@v1
       name: Install Python
@@ -35,6 +38,11 @@ jobs:
       run: |
         python -m pip install cibuildwheel==1.6.1
 
+    - name: Install Visual C++ for Python 2.7
+      if: startsWith(matrix.os, 'windows')
+      run: |
+        choco install vcpython27 -f -y
+
     - name: Build wheel
       run: |
         python -m cibuildwheel --output-dir wheelhouse
@@ -43,14 +51,6 @@ jobs:
       with:
         path: ./wheelhouse/*.whl
 
-    # - name: Publish wheels to PyPI
-    #   env:
-    #     TWINE_USERNAME: __token__
-    #     TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
-    #   run: |
-    #     python -m pip install twine
-    #     twine upload wheelhouse/*.whl
-
   build_sdist:
     name: Build source distribution
     runs-on: ubuntu-latest
@@ -73,7 +73,7 @@ jobs:
     needs: [build_wheels, build_sdist]
     runs-on: ubuntu-latest
     # upload to PyPI on every tag starting with 'v'
-    # if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/v')
+    if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/v')
     # alternatively, to publish when a GitHub Release is created, use the following rule:
     # if: github.event_name == 'release' && github.event.action == 'published'
     steps:

setup.py

@@ -1,4 +1,6 @@
+import os
 import sys
+from pathlib import Path
 
 import setuptools
 from setuptools import Extension, find_packages, setup
@@ -25,6 +27,11 @@ def __str__(self):
     get_pybind_include()
 ]
 
+# Allow for adding include dir via environment variable
+# This is helpful for Windows CI wheel builds
+if os.getenv('PYDELATIN_INCLUDE_DIRS'):
+    path = os.getenv('PYDELATIN_INCLUDE_DIRS')
+    include_dirs.append(str(Path(path).resolve()))
 
 ext_modules = [
     Extension(