feat: add cython pxd for base_scanner

build_ext.py

@@ -0,0 +1,45 @@
+"""Build optional cython modules."""
+
+import logging
+import os
+from distutils.command.build_ext import build_ext
+from typing import Any
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class BuildExt(build_ext):
+    """Build extension."""
+
+    def build_extensions(self) -> None:
+        """Build extensions."""
+        try:
+            super().build_extensions()
+        except Exception as ex:  # nosec
+            _LOGGER.debug("Failed to build extensions: %s", ex, exc_info=True)
+            pass
+
+
+def build(setup_kwargs: Any) -> None:
+    """Build optional cython modules."""
+    if os.environ.get("SKIP_CYTHON", False):
+        return
+    try:
+        from Cython.Build import cythonize
+
+        setup_kwargs.update(
+            {
+                "ext_modules": cythonize(
+                    ["src/habluetooth/base_scanner.py"],
+                    compiler_directives={"language_level": "3"},  # Python 3
+                ),
+                "cmdclass": {"build_ext": BuildExt},
+            }
+        )
+        setup_kwargs["exclude_package_data"] = {
+            pkg: ["*.c"] for pkg in setup_kwargs["packages"]
+        }
+    except Exception:
+        if os.environ.get("REQUIRE_CYTHON"):
+            raise
+        pass

pyproject.toml

@@ -18,6 +18,10 @@ packages = [
     { include = "habluetooth", from = "src" },
 ]
 
+[tool.poetry.build]
+generate-setup-file = true
+script = "build_ext.py"
+
 [tool.poetry.urls]
 "Bug Tracker" = "https://github.com/bluetooth-devices/habluetooth/issues"
 "Changelog" = "https://github.com/bluetooth-devices/habluetooth/blob/main/CHANGELOG.md"
@@ -147,5 +151,5 @@ module = "docs.*"
 ignore_errors = true
 
 [build-system]
-requires = ["poetry-core>=1.0.0"]
+requires = ['setuptools>=65.4.1', 'Cython', "poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"