Pinning IPython to avoid broken tab-completion behavior (#3415)

Author: jlstevens

conda.recipe/meta.yaml

@@ -28,7 +28,7 @@ requirements:
     - bokeh >=1.0.0,<1.1.0
     - jupyter
     - notebook
-    - ipython >=5.4.0
+    - ipython >=5.4.0,<=7.1.1  # <=7.1.1 due to tab completion regression
 
 test:
   imports:

setup.py

@@ -14,7 +14,8 @@
 extras_require = {}
 
 # Notebook dependencies of IPython 3
-extras_require['notebook-dependencies'] = ['ipython', 'pyzmq', 'jinja2', 'tornado',
+extras_require['notebook-dependencies'] = ['ipython<=7.1.1,>=5.4.0',
+                                           'pyzmq', 'jinja2', 'tornado',
                                            'jsonschema', 'notebook', 'pygments']
 # IPython Notebook + matplotlib
 extras_require['recommended'] = extras_require['notebook-dependencies'] + ['matplotlib>=2.1', 'bokeh>=1.0.0']