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authorLibravatarLibravatar Biswakalyan Bhuyan <biswa@surgot.in> 2022-11-13 23:46:45 +0530
committerLibravatarLibravatar Biswakalyan Bhuyan <biswa@surgot.in> 2022-11-13 23:46:45 +0530
commit9468226a9e2e2ab8cdd599f1d8538e860ca86120 (patch)
tree0a77ada226d6db80639f96b438bf83e4e756edb5 /env/lib/python3.10/site-packages/pip/_internal/utils/entrypoints.py
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+import itertools
+import os
+import shutil
+import sys
+from typing import List, Optional
+
+from pip._internal.cli.main import main
+from pip._internal.utils.compat import WINDOWS
+
+_EXECUTABLE_NAMES = [
+ "pip",
+ f"pip{sys.version_info.major}",
+ f"pip{sys.version_info.major}.{sys.version_info.minor}",
+]
+if WINDOWS:
+ _allowed_extensions = {"", ".exe"}
+ _EXECUTABLE_NAMES = [
+ "".join(parts)
+ for parts in itertools.product(_EXECUTABLE_NAMES, _allowed_extensions)
+ ]
+
+
+def _wrapper(args: Optional[List[str]] = None) -> int:
+ """Central wrapper for all old entrypoints.
+
+ Historically pip has had several entrypoints defined. Because of issues
+ arising from PATH, sys.path, multiple Pythons, their interactions, and most
+ of them having a pip installed, users suffer every time an entrypoint gets
+ moved.
+
+ To alleviate this pain, and provide a mechanism for warning users and
+ directing them to an appropriate place for help, we now define all of
+ our old entrypoints as wrappers for the current one.
+ """
+ sys.stderr.write(
+ "WARNING: pip is being invoked by an old script wrapper. This will "
+ "fail in a future version of pip.\n"
+ "Please see https://github.com/pypa/pip/issues/5599 for advice on "
+ "fixing the underlying issue.\n"
+ "To avoid this problem you can invoke Python with '-m pip' instead of "
+ "running pip directly.\n"
+ )
+ return main(args)
+
+
+def get_best_invocation_for_this_pip() -> str:
+ """Try to figure out the best way to invoke pip in the current environment."""
+ binary_directory = "Scripts" if WINDOWS else "bin"
+ binary_prefix = os.path.join(sys.prefix, binary_directory)
+
+ # Try to use pip[X[.Y]] names, if those executables for this environment are
+ # the first on PATH with that name.
+ path_parts = os.path.normcase(os.environ.get("PATH", "")).split(os.pathsep)
+ exe_are_in_PATH = os.path.normcase(binary_prefix) in path_parts
+ if exe_are_in_PATH:
+ for exe_name in _EXECUTABLE_NAMES:
+ found_executable = shutil.which(exe_name)
+ if found_executable and os.path.samefile(
+ found_executable,
+ os.path.join(binary_prefix, exe_name),
+ ):
+ return exe_name
+
+ # Use the `-m` invocation, if there's no "nice" invocation.
+ return f"{get_best_invocation_for_this_python()} -m pip"
+
+
+def get_best_invocation_for_this_python() -> str:
+ """Try to figure out the best way to invoke the current Python."""
+ exe = sys.executable
+ exe_name = os.path.basename(exe)
+
+ # Try to use the basename, if it's the first executable.
+ found_executable = shutil.which(exe_name)
+ if found_executable and os.path.samefile(found_executable, exe):
+ return exe_name
+
+ # Use the full executable name, because we couldn't find something simpler.
+ return exe