From 7c36cb21910b415e0eb171d0f6c4dbf72382fdaf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miro=20Hron=C4=8Dok?= <miro@hroncok.cz>
Date: Tue, 10 Mar 2020 11:03:22 +0100
Subject: [PATCH] Don't warn the user about pip._internal.main() entrypoint

In Fedora, we use that in ensurepip and users cannot do anything about it,
this warning is juts moot. Also, the warning breaks CPython test suite.
---
 src/pip/_internal/__init__.py          |  2 +-
 src/pip/_internal/utils/entrypoints.py | 19 ++++++++++---------
 tests/functional/test_cli.py           |  3 ++-
 3 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/src/pip/_internal/__init__.py b/src/pip/_internal/__init__.py
index 3aa8a46..0ec017b 100755
--- a/src/pip/_internal/__init__.py
+++ b/src/pip/_internal/__init__.py
@@ -15,4 +15,4 @@ def main(args=None):
     """
     from pip._internal.utils.entrypoints import _wrapper
 
-    return _wrapper(args)
+    return _wrapper(args, _nowarn=True)
diff --git a/src/pip/_internal/utils/entrypoints.py b/src/pip/_internal/utils/entrypoints.py
index befd01c..d6f3632 100644
--- a/src/pip/_internal/utils/entrypoints.py
+++ b/src/pip/_internal/utils/entrypoints.py
@@ -7,7 +7,7 @@ if MYPY_CHECK_RUNNING:
     from typing import List, Optional
 
 
-def _wrapper(args=None):
+def _wrapper(args=None, _nowarn=False):
     # type: (Optional[List[str]]) -> int
     """Central wrapper for all old entrypoints.
 
@@ -20,12 +20,13 @@ def _wrapper(args=None):
     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"
-    )
+    if not _nowarn:
+        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)
diff --git a/tests/functional/test_cli.py b/tests/functional/test_cli.py
index e416315..7f57f67 100644
--- a/tests/functional/test_cli.py
+++ b/tests/functional/test_cli.py
@@ -31,4 +31,5 @@ def test_entrypoints_work(entrypoint, script):
     result = script.pip("-V")
     result2 = script.run("fake_pip", "-V", allow_stderr_warning=True)
     assert result.stdout == result2.stdout
-    assert "old script wrapper" in result2.stderr
+    if entrypoint[0] != "fake_pip = pip._internal:main":
+        assert "old script wrapper" in result2.stderr
-- 
2.24.1