From f3592aef055391c95bd6beb7fb38f54b8d9cd4c3 Mon Sep 17 00:00:00 2001
From: RoomWithOutRoof <166608075+Jah-yee@users.noreply.github.com>
Date: Thu, 19 Mar 2026 07:20:34 +0800
Subject: [PATCH 1/2] Fix sysconfig.get_platform() for truncated sys.version on
 Windows

On Windows, sysconfig.get_platform() checks for 'amd64' in sys.version to
detect 64-bit builds. However, sys.version can be truncated (e.g., ~100 chars
on clang builds), causing 'amd64' to be missing and returning 'win32' incorrectly.

This fix adds sys.maxsize > 2**32 as a fallback check, which is reliable even
when sys.version is truncated. Also reorders arm64 check before arm32 for
proper precedence.

Fixes: python/cpython#145410
---
 Lib/sysconfig/__init__.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/Lib/sysconfig/__init__.py b/Lib/sysconfig/__init__.py
index 8ff9c99435bb1aa..1f780bc8f44ec00 100644
--- a/Lib/sysconfig/__init__.py
+++ b/Lib/sysconfig/__init__.py
@@ -665,12 +665,17 @@ def get_platform():
 
     For other non-POSIX platforms, currently just returns :data:`sys.platform`."""
     if os.name == 'nt':
+        # Check for architecture in sys.version first, then fall back to sys.maxsize
+        # which is reliable even when sys.version is truncated (e.g., clang builds on Windows)
         if 'amd64' in sys.version.lower():
             return 'win-amd64'
-        if '(arm)' in sys.version.lower():
-            return 'win-arm32'
+        if sys.maxsize > 2**32:
+            # 64-bit Windows where sys.version may be truncated
+            return 'win-amd64'
         if '(arm64)' in sys.version.lower():
             return 'win-arm64'
+        if '(arm)' in sys.version.lower():
+            return 'win-arm32'
         return sys.platform
 
     if os.name != "posix" or not hasattr(os, 'uname'):

From 363651e65195bc5637029eeb08b71aab1f6651e3 Mon Sep 17 00:00:00 2001
From: RoomWithOutRoof <roomwithoutroof@users.noreply.github.com>
Date: Fri, 17 Apr 2026 00:58:34 +0800
Subject: [PATCH 2/2] Fix macOS Python Launcher reported as iOS app in System
 Profiler

Add CFBundleSupportedPlatforms key with MacOSX to the Info.plist to
properly identify the Python Launcher as a macOS application on Apple
Silicon systems.

Fixes python/cpython#137673
---
 Mac/PythonLauncher/Info.plist.in | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Mac/PythonLauncher/Info.plist.in b/Mac/PythonLauncher/Info.plist.in
index ce8f27cd7d4de70..0d090f5a1fef1e7 100644
--- a/Mac/PythonLauncher/Info.plist.in
+++ b/Mac/PythonLauncher/Info.plist.in
@@ -57,6 +57,10 @@
 	<string>%VERSION%</string>
 	<key>CFBundleSignature</key>
 	<string>PytL</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>MacOSX</string>
+	</array>
 	<key>CFBundleVersion</key>
 	<string>%VERSION%</string>
 	<key>NSMainNibFile</key>