bpo-38809: Windows build scripts use python.exe from virtual envs (GH-17164)

https://bugs.python.org/issue38809
6 years ago · ee703cbb41
2 changed files with 5 additions and 0 deletions
--- a/Misc/NEWS.d/next/Build/2019-11-15-09-25-44.bpo-38809.9jwta6.rst
+++ b/Misc/NEWS.d/next/Build/2019-11-15-09-25-44.bpo-38809.9jwta6.rst
@ -0,0 +1,2 @@
+On Windows, build scripts will now recognize and use python.exe from an
+active virtual env.
--- a/PCbuild/find_python.bat
+++ b/PCbuild/find_python.bat
@ -24,6 +24,9 @@
 :begin_search
@set PYTHON=

+@rem If there is an active virtual env, use that one
+@if NOT "%VIRTUAL_ENV%"=="" (set PYTHON="%VIRTUAL_ENV%\Scripts\python.exe") & (set _Py_Python_Source=found in virtual env) & goto :found
+
@set _Py_EXTERNALS_DIR=%EXTERNALS_DIR%
@if "%_Py_EXTERNALS_DIR%"=="" (set _Py_EXTERNALS_DIR=%~dp0\..\externals)