8000 gh-94280: Require Python 3.9 or higher to compile CPython on Windows … · python/cpython@acc6468 · GitHub
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gh-94280: Require Python 3.9 or higher to compile CPython on Windows (GH-94281)
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‎Misc/NEWS.d/next/Build/2022-06-25-23-25-47.gh-issue-94280.YhEyW_.rst

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Updated pegen regeneration script on Windows to find and use Python 3.9 or
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higher. Prior to this, pegen regeneration already required 3.9 or higher,
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but the script may have used lower versions of Python.

‎PCbuild/find_python.bat

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@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"
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@rem If HOST_PYTHON is recent enough, use that
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@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
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@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
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@rem If py.exe finds a recent enough version, use that one
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@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
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@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
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@if NOT exist "%_Py_EXTERNALS_DIR%" mkdir "%_Py_EXTERNALS_DIR%"
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@set _Py_NUGET=%NUGET%

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