--- a/mercurial/rcutil.py Thu Oct 12 19:20:04 2017 -0700
+++ b/mercurial/rcutil.py Thu Oct 12 23:30:46 2017 -0700
@@ -15,7 +15,7 @@
util,
)
-if pycompat.osname == 'nt':
+if pycompat.iswindows:
from . import scmwindows as scmplatform
else:
from . import scmposix as scmplatform