we still need sys

graingert · web-flow · commit d8c836fb0e31 · 2021-03-04T14:47:44.000Z
diff --git a/sniffio/_impl.py b/sniffio/_impl.py
@@ -1,5 +1,6 @@
 from contextvars import ContextVar
 from typing import Optional
+import sys
 
 current_async_library_cvar = ContextVar(
     "current_async_library_cvar", default=None
