Update extras_require to include requirements for examples

etstool.py

@@ -116,6 +116,8 @@
 }
 
 # Additional toolkit-independent dependencies for demo testing
+# This should correspond to the "examples" dependencies in extras_requires but
+# the following names are used by EDM.
 test_dependencies = {
     "apptools",
     "chaco",

traitsui/__init__.py

@@ -27,7 +27,18 @@
     "pyqt": ["pyqt>=4.10", "pygments"],
     "pyqt5": ["pyqt5", "pygments"],
     "pyside2": ["pyside2", "shiboken2", "pygments"],
-    "demo": ["configobj", "docutils"],
+    "demo": [
+        # to be deprecated, see enthought/traitsui#950
+        "configobj", "docutils",
+    ],
+    "examples": [
+        # Dependencies for examples
+        "apptools",
+        "chaco",   # for a very simple example, see enthought/traitsui#1139
+        "h5py",
+        "numpy",
+        "tables",
+    ],
     "test": ["packaging"],
 }