Build a self-contained Win32 Python wheel for Concordance

.github/workflows/ci-linux.yml

@@ -3,7 +3,7 @@ on:
   push:
     branches: [main]
   pull_request:
-
+  workflow_dispatch:
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/ci-macos.yml

@@ -3,6 +3,7 @@ on:
   push:
     branches: [main]
   pull_request:
+  workflow_dispatch:
 jobs:
   build:
     runs-on: macos-latest

.github/workflows/ci-windows.yml

@@ -3,6 +3,7 @@ on:
   push:
     branches: [main]
   pull_request:
+  workflow_dispatch:
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -35,6 +36,14 @@ jobs:
       with:
         name: windows-installer
         path: concordance/win/concordance-installer.exe
+    - name: Build Python wheel
+      run: |
+        pip install build
+        MINGW_SYSROOT_BIN="/usr/i686-w64-mingw32/sys-root/mingw/bin" concordance/win/make_wheel.py
+    - uses: actions/upload-artifact@v4
+      with:
+        name: windows-wheel
+        path: concordance/win/*.whl
   test:
     needs: build
     runs-on: windows-latest
@@ -43,9 +52,22 @@ jobs:
       id: download
       with:
         name: windows-installer
-    - name: Install and test
+    - name: Install and test installer
       run: |
-        ${{steps.download.outputs.download-path}}\concordance-installer.exe /S
+        Start-Process -FilePath ${{steps.download.outputs.download-path}}\concordance-installer.exe -ArgumentList "/S" -NoNewWindow -Wait
         Start-Sleep -Seconds 5
         cd "C:\Program Files (x86)\Concordance"
         .\concordance.exe --version
+    - uses: actions/download-artifact@v4
+      id: downloadwheel
+      with:
+        name: windows-wheel
+    - uses: actions/setup-python@v5
+      with:
+        python-version: '3.12'
+        architecture: 'x86'
+    - name: Install and test wheel
+      run: |
+        pip install (gci ${{steps.downloadwheel.outputs.download-path}}\*.whl).FullName
+        python3 -c 'import libconcord; print(libconcord)'
+

concordance/win/make_wheel.py

@@ -0,0 +1,36 @@
+#!/usr/bin/python3
+
+import os
+import shutil
+import subprocess
+import tempfile
+import glob
+
+cp = subprocess.run([
+    'mingw-ldd',
+    os.path.dirname(os.path.abspath(__file__)) + '/../../libconcord/.libs/libconcord-6.dll',
+    '--dll-lookup-dirs',
+    os.environ['MINGW_SYSROOT_BIN'],
+    os.path.dirname(os.path.abspath(__file__)) + '/../../libconcord/.libs',
+], capture_output=True, check=True, text=True)
+with tempfile.TemporaryDirectory() as tempdir:
+    subdir = os.path.join(tempdir,'libconcord')
+    os.mkdir(subdir)
+    for line in cp.stdout.splitlines():
+        dll = line.split('=>')[1].strip()
+        if dll != 'not found':
+            shutil.copy2(dll, subdir)
+    shutil.copy2(os.path.dirname(os.path.abspath(__file__)) + '/../../libconcord/.libs/libconcord-6.dll', subdir)
+    shutil.copy2(os.path.dirname(os.path.abspath(__file__)) + '/../../libconcord/bindings/python/libconcord.py', subdir + '/__init__.py')
+    shutil.copy2(os.path.dirname(os.path.abspath(__file__)) + '/../../libconcord/bindings/python/setup.py', tempdir)
+    shutil.copy2(os.path.dirname(os.path.abspath(__file__)) + '/../../libconcord/bindings/python/pyproject.toml', tempdir)
+
+    curdir = os.getcwd()
+    os.chdir(tempdir)
+
+    os.environ["WIN32WHEEL"]="1"
+    subprocess.run([ 'python3', '-m', 'build', '-w' ])
+    for file in glob.glob('dist/*.whl'):
+        print("Found wheel: " + file)
+        shutil.copy2(file, os.path.dirname(os.path.abspath(__file__)))
+    os.chdir(curdir)

libconcord/bindings/python/libconcord.py

@@ -37,7 +37,8 @@
 # Load the DLL
 
 if platform.system() == 'Windows':
-    _dll = cdll.LoadLibrary('libconcord.dll')
+    with os.add_dll_directory(os.path.dirname(__file__)):
+        _dll = cdll.LoadLibrary('libconcord-%i.dll' % ABI_VERSION)
 elif platform.system() == 'Darwin':
     _dll = cdll.LoadLibrary('libconcord.%i.dylib' % ABI_VERSION)
 else:

libconcord/bindings/python/setup.py

@@ -18,10 +18,32 @@
 #
 
 from setuptools import setup
+import os
 
-setup(
-    name='libconcord',
-    version='1.5',
-    py_modules=['libconcord'],
-)
+common_name='libconcord'
+common_version='1.5'
+
+if os.environ.get("WIN32WHEEL", None) == "1": 
+    #Win32 Wheel Option Set
+    setup(
+        name=common_name,
+        version=common_version,
+        packages=['libconcord'],
+        zip_safe=False,
+        package_data={
+                '': ['*.dll']
+            },
+        options={
+                "bdist_wheel": {
+                    "plat_name": "win32",
+                },
+            },
+    )
+else:
+    #Default Option Set
+    setup(
+        name=common_name,
+        version=common_version,
+        py_modules=['libconcord'],
+    )