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@@ -1,78 +1,64 @@ |
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import collections |
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import os |
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import os.path |
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import subprocess |
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import sys |
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import sysconfig |
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import tempfile |
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from contextlib import nullcontext |
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from importlib import resources |
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from pathlib import Path |
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from shutil import copy2 |
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__all__ = ["version", "bootstrap"] |
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_PACKAGE_NAMES = ('pip',) |
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_PIP_VERSION = "23.3.2" |
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_PROJECTS = [ |
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("pip", _PIP_VERSION, "py3"), |
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] |
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# Packages bundled in ensurepip._bundled have wheel_name set. |
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# Packages from WHEEL_PKG_DIR have wheel_path set. |
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_Package = collections.namedtuple('Package', |
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('version', 'wheel_name', 'wheel_path')) |
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# Directory of system wheel packages. Some Linux distribution packaging |
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# policies recommend against bundling dependencies. For example, Fedora |
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# installs wheel packages in the /usr/share/python-wheels/ directory and don't |
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# install the ensurepip._bundled package. |
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_WHEEL_PKG_DIR = sysconfig.get_config_var('WHEEL_PKG_DIR') |
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if (_pkg_dir := sysconfig.get_config_var('WHEEL_PKG_DIR')) is not None: |
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_WHEEL_PKG_DIR = Path(_pkg_dir).resolve() |
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else: |
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_WHEEL_PKG_DIR = None |
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def _find_wheel_pkg_dir_pip(): |
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if _WHEEL_PKG_DIR is None: |
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# NOTE: The compile-time `WHEEL_PKG_DIR` is unset so there is no place |
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# NOTE: for looking up the wheels. |
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return None |
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def _find_packages(path): |
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packages = {} |
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dist_matching_wheels = _WHEEL_PKG_DIR.glob('pip-*.whl') |
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try: |
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filenames = os.listdir(path) |
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except OSError: |
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# Ignore: path doesn't exist or permission error |
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filenames = () |
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# Make the code deterministic if a directory contains multiple wheel files |
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# of the same package, but don't attempt to implement correct version |
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# comparison since this case should not happen. |
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filenames = sorted(filenames) |
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for filename in filenames: |
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# filename is like 'pip-21.2.4-py3-none-any.whl' |
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if not filename.endswith(".whl"): |
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continue |
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for name in _PACKAGE_NAMES: |
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prefix = name + '-' |
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if filename.startswith(prefix): |
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break |
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else: |
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continue |
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# Extract '21.2.4' from 'pip-21.2.4-py3-none-any.whl' |
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version = filename.removeprefix(prefix).partition('-')[0] |
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wheel_path = os.path.join(path, filename) |
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packages[name] = _Package(version, None, wheel_path) |
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return packages |
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def _get_packages(): |
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global _PACKAGES, _WHEEL_PKG_DIR |
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if _PACKAGES is not None: |
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return _PACKAGES |
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packages = {} |
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for name, version, py_tag in _PROJECTS: |
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wheel_name = f"{name}-{version}-{py_tag}-none-any.whl" |
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packages[name] = _Package(version, wheel_name, None) |
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if _WHEEL_PKG_DIR: |
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dir_packages = _find_packages(_WHEEL_PKG_DIR) |
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# only used the wheel package directory if all packages are found there |
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if all(name in dir_packages for name in _PACKAGE_NAMES): |
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packages = dir_packages |
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_PACKAGES = packages |
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return packages |
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_PACKAGES = None |
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last_matching_dist_wheel = sorted(dist_matching_wheels)[-1] |
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except IndexError: |
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# NOTE: `WHEEL_PKG_DIR` does not contain any wheel files for `pip`. |
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return None |
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return nullcontext(last_matching_dist_wheel) |
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def _get_pip_whl_path_ctx(): |
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# Prefer pip from the wheel package directory, if present. |
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if (alternative_pip_wheel_path := _find_wheel_pkg_dir_pip()) is not None: |
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return alternative_pip_wheel_path |
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return resources.as_file( |
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resources.files('ensurepip') |
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/ '_bundled' |
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/ f'pip-{_PIP_VERSION}-py3-none-any.whl' |
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) |
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def _get_pip_version(): |
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with _get_pip_whl_path_ctx() as bundled_wheel_path: |
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wheel_name = bundled_wheel_path.name |
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return ( |
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# Extract '21.2.4' from 'pip-21.2.4-py3-none-any.whl' |
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wheel_name. |
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removeprefix('pip-'). |
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partition('-')[0] |
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) |
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def _run_pip(args, additional_paths=None): |
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@@ -105,7 +91,7 @@ def version(): |
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""" |
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Returns a string specifying the bundled version of pip. |
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""" |
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return _get_packages()['pip'].version |
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return _get_pip_version() |
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def _disable_pip_configuration_settings(): |
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@@ -167,24 +153,10 @@ def _bootstrap(*, root=None, upgrade=False, user=False, |
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with tempfile.TemporaryDirectory() as tmpdir: |
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# Put our bundled wheels into a temporary directory and construct the |
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# additional paths that need added to sys.path |
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additional_paths = [] |
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for name, package in _get_packages().items(): |
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if package.wheel_name: |
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# Use bundled wheel package |
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wheel_name = package.wheel_name |
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wheel_path = resources.files("ensurepip") / "_bundled" / wheel_name |
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whl = wheel_path.read_bytes() |
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else: |
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# Use the wheel package directory |
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with open(package.wheel_path, "rb") as fp: |
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whl = fp.read() |
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wheel_name = os.path.basename(package.wheel_path) |
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filename = os.path.join(tmpdir, wheel_name) |
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with open(filename, "wb") as fp: |
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fp.write(whl) |
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additional_paths.append(filename) |
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tmpdir_path = Path(tmpdir) |
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with _get_pip_whl_path_ctx() as bundled_wheel_path: |
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tmp_wheel_path = tmpdir_path / bundled_wheel_path.name |
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copy2(bundled_wheel_path, tmp_wheel_path) |
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# Construct the arguments to be passed to the pip command |
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args = ["install", "--no-cache-dir", "--no-index", "--find-links", tmpdir] |
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@@ -197,7 +169,8 @@ def _bootstrap(*, root=None, upgrade=False, user=False, |
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if verbosity: |
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args += ["-" + "v" * verbosity] |
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return _run_pip([*args, *_PACKAGE_NAMES], additional_paths) |
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return _run_pip([*args, "pip"], [os.fsdecode(tmp_wheel_path)]) |
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def _uninstall_helper(*, verbosity=0): |
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"""Helper to support a clean default uninstall process on Windows |
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@@ -227,7 +200,7 @@ def _uninstall_helper(*, verbosity=0): |
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if verbosity: |
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args += ["-" + "v" * verbosity] |
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return _run_pip([*args, *reversed(_PACKAGE_NAMES)]) |
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return _run_pip([*args, "pip"]) |
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def _main(argv=None): |
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