| # Copyright 2022 The Pigweed Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| # use this file except in compliance with the License. You may obtain a copy of |
| # the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| # License for the specific language governing permissions and limitations under |
| # the License. |
| """Crate a venv.""" |
| |
| import argparse |
| import os |
| import pathlib |
| import platform |
| import shutil |
| import stat |
| import sys |
| import venv |
| |
| |
| def _parse_args() -> argparse.Namespace: |
| parser = argparse.ArgumentParser(description=__doc__) |
| parser.add_argument( |
| '--depfile', |
| type=pathlib.Path, |
| required=True, |
| help='Path at which a depfile should be written.', |
| ) |
| parser.add_argument( |
| '--destination-dir', |
| type=pathlib.Path, |
| required=True, |
| help='Path to venv directory.', |
| ) |
| parser.add_argument( |
| '--stampfile', |
| type=pathlib.Path, |
| required=True, |
| help="Path to this target's stamp file.", |
| ) |
| return parser.parse_args() |
| |
| |
| def _rm_dir(path_to_delete: pathlib.Path) -> None: |
| """Delete a directory recursively. |
| |
| On Windows if a file can't be deleted, mark it as writable then delete. |
| """ |
| |
| def make_writable_and_delete(_func, path, _exc_info): |
| os.chmod(path, stat.S_IWRITE) |
| os.unlink(path) |
| |
| on_rm_error = None |
| if platform.system() == 'Windows': |
| on_rm_error = make_writable_and_delete |
| shutil.rmtree(path_to_delete, onerror=on_rm_error) |
| |
| |
| def main( |
| depfile: pathlib.Path, |
| destination_dir: pathlib.Path, |
| stampfile: pathlib.Path, |
| ) -> None: |
| # Create the virtualenv. |
| if destination_dir.exists(): |
| _rm_dir(destination_dir) |
| venv.create(destination_dir, symlinks=True, with_pip=True) |
| |
| # Write out the depfile, making sure the Python path is |
| # relative to the outdir so that this doesn't add user-specific |
| # info to the build. |
| out_dir_path = pathlib.Path(os.getcwd()).resolve() |
| python_path = pathlib.Path(sys.executable).resolve() |
| rel_python_path = os.path.relpath(python_path, start=out_dir_path) |
| depfile.write_text(f'{stampfile}: \\\n {rel_python_path}') |
| |
| |
| if __name__ == '__main__': |
| main(**vars(_parse_args())) |