b

Author: Behemyth

cppython/build/backend.py

@@ -15,9 +15,7 @@
 logger = logging.getLogger('cppython.build')
 
 
-def _inject_toolchain(
-    config_settings: dict[str, Any] | None, toolchain_file: Path | None
-) -> dict[str, Any]:
+def _inject_toolchain(config_settings: dict[str, Any] | None, toolchain_file: Path | None) -> dict[str, Any]:
     """Inject the toolchain file into config settings for scikit-build-core.
 
     Args:

docs/build-backend/integration.md

@@ -205,11 +205,13 @@ my_project/
 ### Dual Workflow
 
 **Python extension** (uses `cppython.build`):
+
 ```bash
 pip wheel .
 ```
 
 **Standalone C++ build** (uses CMakePresets):
+
 ```bash
 cmake --preset=default
 cmake --build build

examples/conan_cmake/extension/CMakePresets.json

@@ -7,4 +7,4 @@
             "description": "Base preset for all configurations"
         }
     ]
-}
+}

examples/conan_cmake/extension/pyproject.toml

@@ -20,10 +20,7 @@ wheel.packages = ["src/example_extension"]
 # and inject the toolchain file into scikit-build-core
 install-path = "install"
 
-dependencies = [
-    "fmt>=11.0.2",
-    "nanobind>=2.4.0",
-]
+dependencies = ["fmt>=11.0.2", "nanobind>=2.4.0"]
 
 [tool.cppython.generators.cmake]
 # Use the CMakePresets.json in this directory

examples/conan_cmake/extension/src/example_extension/__init__.py

@@ -1,5 +1,5 @@
 """Example Python extension module with C++ backend."""
 
-from example_extension._core import format_greeting, add_numbers
+from example_extension._core import add_numbers, format_greeting
 
-__all__ = ["format_greeting", "add_numbers"]
+__all__ = ['format_greeting', 'add_numbers']

examples/conan_cmake/extension/src/example_extension/_core.cpp

@@ -16,7 +16,8 @@ namespace nb = nanobind;
  * @param name The name to greet
  * @return A formatted greeting string
  */
-std::string format_greeting(const std::string& name) {
+std::string format_greeting(const std::string &name)
+{
     return fmt::format("Hello, {}! This message was formatted by fmt.", name);
 }
 
@@ -27,11 +28,13 @@ std::string format_greeting(const std::string& name) {
  * @param b Second number
  * @return Sum of a and b
  */
-int add_numbers(int a, int b) {
+int add_numbers(int a, int b)
+{
     return a + b;
 }
 
-NB_MODULE(_core, m) {
+NB_MODULE(_core, m)
+{
     m.doc() = "Example extension module built with CPPython + scikit-build-core";
 
     m.def("format_greeting", &format_greeting, nb::arg("name"),

tests/integration/examples/test_conan_cmake.py

@@ -168,7 +168,7 @@ def test_extension(example_runner: CliRunner) -> None:
 
         # Test the installed extension by adding install_target to path
         test_code = (
-            f"import sys; sys.path.insert(0, {str(install_path)!r}); "
+            f'import sys; sys.path.insert(0, {str(install_path)!r}); '
             "import example_extension; print(example_extension.format_greeting('Test'))"
         )
         test_result = subprocess.run(