add typing-extensions requirement

dtrodrigues · sebastinas · commit 532dac009bc1 · 2021-11-08T09:12:23.000+01:00
diff --git a/setup.cfg b/setup.cfg
@@ -28,6 +28,7 @@ install_requires =
     pygments
     pyxdg
     requests
+    typing-extensions
 
 [options.extras_require]
 clipboard = pyperclip
