setup.py: Add requires for installation from tarball

1 files changed, 3 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index a51c434d8..e5453f645 100644
--- a/setup.py
+++ b/setup.py
@@ -79,6 +79,9 @@ extras_require = {
 if sys.platform == 'win32':
     requires.append('colorama>=0.3.5')
 
+if sys.version_info < (3, 5):
+    requires.append('typing')
+
 # Provide a "compile_catalog" command that also creates the translated
 # JavaScript files if Babel is available.