pyproject-api

import sys from pathlib import Path import tempfile import shutil # Create a temporary project directory temp_dir = Path(tempfile.mkdtemp()) project_root = temp_dir / "my_project" project_root.mkdir() # Create a minimal pyproject.toml pyproject_toml_content = ''' [build-system] requires = ["my-dummy-backend"] build-backend = "my_dummy_backend:MyDummyBackend" [project] name = "my-example-package" version = "0.0.1" ''' (project_root / "pyproject.toml").write_text(pyproject_toml_content) # Create a dummy build backend module (my_dummy_backend.py) backend_module_content = ''' from pathlib import Path class MyDummyBackend: def __init__(self, directory): # pyproject-api passes the project directory self.directory = Path(directory) self.name = "my-example-package" def get_requires_for_build_wheel(self, config_settings=None): return [] def build_wheel(self, wheel_directory, config_settings=None, metadata_directory=None): # Simulate building a wheel file wheel_name = f"{self.name}-0.0.1-py3-none-any.whl" (Path(wheel_directory) / wheel_name).touch() return wheel_name ''' (project_root / "my_dummy_backend.py").write_text(backend_module_content) from pyproject_api import Frontend, BackendFailed print(f"Created temporary project at: {project_root}") try: # Initialize the Frontend to interact with our dummy project # backend_paths is crucial to make 'my_dummy_backend' importable frontend = Frontend( root=project_root, backend_paths=[project_root], backend_module="my_dummy_backend", backend_obj="MyDummyBackend", # The class name to instantiate requires=[], # Our dummy backend doesn't have build requirements itself reuse_backend=False ) # Get build requirements (should be empty for our dummy backend) build_requirements = frontend.get_requires_for_build_wheel() print(f"Build requirements reported by backend: {build_requirements.requires}") # Build a wheel build_dir = temp_dir / "dist" build_dir.mkdir() print(f"Attempting to build wheel into: {build_dir}") wheel_result = frontend.build_wheel(build_dir) print(f"Successfully built wheel: {wheel_result.path.name}") print(f"Wheel file location: {wheel_result.path}") except BackendFailed as e: print(f"Backend operation failed: {e.exc_msg}") print(f"Backend stdout: {e.out}") print(f"Backend stderr: {e.err}") except Exception as e: print(f"An unexpected error occurred: {e}") finally: # Clean up the temporary directory if temp_dir.exists(): shutil.rmtree(temp_dir) print(f"Cleaned up temporary directory: {temp_dir}")