gh-94280: Require Python 3.9 or higher to compile CPython on Windows (GH-94281)

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 (file)
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\r
+higher.  Prior to this, pegen regeneration already required 3.9 or higher,\r
+but the script may have used lower versions of Python.

diff --git a/PCbuild/find_python.bat b/PCbuild/find_python.bat
index fc1049c5508187fcecfd881e72848c35130c7d51..11d6cba7a172c958d919fc616f50918f12786db7 100644 (file)
--- 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%