Fixed _sys_home computation and added diagnostics for Windows buildbot failures.
diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
index 59315f7..e86cb23 100644
--- a/Lib/distutils/sysconfig.py
+++ b/Lib/distutils/sysconfig.py
@@ -50,6 +50,8 @@
if _sys_home and os.name == 'nt' and \
_sys_home.lower().endswith(('pcbuild', 'pcbuild\\amd64')):
_sys_home = os.path.dirname(_sys_home)
+ if _sys_home.endswith('pcbuild'): # must be amd64
+ _sys_home = os.path.dirname(_sys_home)
def _python_build():
if _sys_home:
return _is_python_source_dir(_sys_home)