Added ipywidgets as explicit dependency

nthiery · nthiery · commit 0183788b329d · 2022-06-19T12:29:36.000+02:00
diff --git a/environment.yml b/environment.yml
@@ -6,3 +6,7 @@ channels:
 
 dependencies:
   - sage
+    # ipywidgets is a Sage dependency, but rendering fails in binder
+    # presumably some extension activation missing.
+    # https://discourse.jupyter.org/t/binder-and-sagemath/11059/8
+  - ipywidgets
