From 1e5e38b0ee45f0ebb04d7c24b4abce9f6f6e877e Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Mon, 7 Nov 2022 13:12:56 -0800
Subject: gh-94280: Require Python 3.9 or higher to compile CPython on Windows
 (GH-94281)

(cherry picked from commit acc6468f7ee0d1f22633f0b84df28f69e75f1260)

Co-authored-by: Shixian Li <34830785+znsoooo@users.noreply.github.com>
---
 Misc/NEWS.d/next/Build/2022-06-25-23-25-47.gh-issue-94280.YhEyW_.rst | 3 +++
 PCbuild/find_python.bat                                              | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)
 create mode 100644 Misc/NEWS.d/next/Build/2022-06-25-23-25-47.gh-issue-94280.YhEyW_.rst

diff --git a/Misc/NEWS.d/next/Build/2022-06-25-23-25-47.gh-issue-94280.YhEyW_.rst b/Misc/NEWS.d/next/Build/2022-06-25-23-25-47.gh-issue-94280.YhEyW_.rst
new file mode 100644
index 0000000..1199e84
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2022-06-25-23-25-47.gh-issue-94280.YhEyW_.rst
@@ -0,0 +1,3 @@
+Updated pegen regeneration script on Windows to find and use Python 3.9 or
+higher.  Prior to this, pegen regeneration already required 3.9 or higher,
+but the script may have used lower versions of Python.
diff --git a/PCbuild/find_python.bat b/PCbuild/find_python.bat
index fc1049c..11d6cba 100644
--- a/PCbuild/find_python.bat
+++ b/PCbuild/find_python.bat
@@ -39,10 +39,10 @@
 @if exist "%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe" ("%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe" -Ec "import sys; assert sys.version_info[:2] >= (3, 8)" >nul 2>nul) && (set PYTHON="%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe") && (set _Py_Python_Source=found in externals directory) && goto :found || rmdir /Q /S "%_Py_EXTERNALS_DIR%\pythonx86"
 
 @rem If HOST_PYTHON is recent enough, use that
-@if NOT "%HOST_PYTHON%"=="" @%HOST_PYTHON% -Ec "import sys; assert sys.version_info[:2] >= (3, 8)" >nul 2>nul && (set PYTHON="%HOST_PYTHON%") && (set _Py_Python_Source=found as HOST_PYTHON) && goto :found
+@if NOT "%HOST_PYTHON%"=="" @%HOST_PYTHON% -Ec "import sys; assert sys.version_info[:2] >= (3, 9)" >nul 2>nul && (set PYTHON="%HOST_PYTHON%") && (set _Py_Python_Source=found as HOST_PYTHON) && goto :found
 
 @rem If py.exe finds a recent enough version, use that one
-@for %%p in (3.10 3.9 3.8) do @py -%%p -EV >nul 2>&1 && (set PYTHON=py -%%p) && (set _Py_Python_Source=found %%p with py.exe) && goto :found
+@for %%p in (3.10 3.9) do @py -%%p -EV >nul 2>&1 && (set PYTHON=py -%%p) && (set _Py_Python_Source=found %%p with py.exe) && goto :found
 
 @if NOT exist "%_Py_EXTERNALS_DIR%" mkdir "%_Py_EXTERNALS_DIR%"
 @set _Py_NUGET=%NUGET%
-- 
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