name : __pip-runner__.py """Execute exactly this copy of pip, within a different environment. This file is named as it is, to ensure that this module can't be imported via an import statement. """ # /!\ This version compatibility check section must be Python 2 compatible. /!\ import sys # Copied from pyproject.toml PYTHON_REQUIRES = (3, 8) def version_str(version): # type: ignore return ".".join(str(v) for v in version) if sys.version_info[:2] < PYTHON_REQUIRES: raise SystemExit( "This version of pip does not support python {} (requires >={}).".format( version_str(sys.version_info[:2]), version_str(PYTHON_REQUIRES) ) ) # From here on, we can use Python 3 features, but the syntax must remain # Python 2 compatible. import runpy # noqa: E402 from importlib.machinery import PathFinder # noqa: E402 from os.path import dirname # noqa: E402 PIP_SOURCES_ROOT = dirname(dirname(__file__)) class PipImportRedirectingFinder: @classmethod def find_spec(self, fullname, path=None, target=None): # type: ignore if fullname != "pip": return None spec = PathFinder.find_spec(fullname, [PIP_SOURCES_ROOT], target) assert spec, (PIP_SOURCES_ROOT, fullname) return spec sys.meta_path.insert(0, PipImportRedirectingFinder()) assert __name__ == "__main__", "Cannot run __pip-runner__.py as a non-main module" runpy.run_module("pip", run_name="__main__", alter_sys=True)