extensions: Specify dependency on typing for py<35 (#4268)

Fixes #4264
python · Nov 20, 2017 · d9581fe · d9581fe
1 parent 608b6a6
commit d9581fe
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/extensions/setup.py b/extensions/setup.py
@@ -40,4 +40,7 @@
     platforms=['POSIX'],
     py_modules=['mypy_extensions'],
     classifiers=classifiers,
+    install_requires=[
+        'typing >= 3.5.3; python_version < "3.5"',
+    ],
 )