0001-Partially-revert-Clean-up-argparse-hacks.patch

From f12b57ec89a6431737e4f473cecabf0d350b0d46 Mon Sep 17 00:00:00 2001
From: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Date: Sat, 15 Feb 2025 20:11:06 +0100
Subject: [PATCH] Partially revert Clean up argparse hacks

---
 mypy/typeshed/stdlib/argparse.pyi | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/mypy/typeshed/stdlib/argparse.pyi b/mypy/typeshed/stdlib/argparse.pyi
index 32beaff14..e97a2d2e1 100644
--- a/mypy/typeshed/stdlib/argparse.pyi
+++ b/mypy/typeshed/stdlib/argparse.pyi
@@ -2,7 +2,7 @@ import sys
 from _typeshed import SupportsWrite, sentinel
 from collections.abc import Callable, Generator, Iterable, Sequence
 from re import Pattern
-from typing import IO, Any, ClassVar, Final, Generic, NoReturn, Protocol, TypeVar, overload
+from typing import IO, Any, ClassVar, Final, Generic, NewType, NoReturn, Protocol, TypeVar, overload
 from typing_extensions import Self, TypeAlias, deprecated
 
 __all__ = [
@@ -36,7 +36,9 @@ ONE_OR_MORE: Final = "+"
 OPTIONAL: Final = "?"
 PARSER: Final = "A..."
 REMAINDER: Final = "..."
-SUPPRESS: Final = "==SUPPRESS=="
+_SUPPRESS_T = NewType("_SUPPRESS_T", str)
+SUPPRESS: _SUPPRESS_T | str  # not using Literal because argparse sometimes compares SUPPRESS with is
+# the | str is there so that foo = argparse.SUPPRESS; foo = "test" checks out in mypy
 ZERO_OR_MORE: Final = "*"
 _UNRECOGNIZED_ARGS_ATTR: Final = "_unrecognized_args"  # undocumented
 
@@ -79,7 +81,7 @@ class _ActionsContainer:
         # more precisely, Literal["?", "*", "+", "...", "A...", "==SUPPRESS=="],
         # but using this would make it hard to annotate callers that don't use a
         # literal argument and for subclasses to override this method.
-        nargs: int | str | None = None,
+        nargs: int | str | _SUPPRESS_T | None = None,
         const: Any = ...,
         default: Any = ...,
         type: _ActionType = ...,
-- 
2.49.0