TST: use bleeding edge branch for traitlets

tacaswell · rmorshea · commit 5790edc583cf · 2015-10-20T19:47:20.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -64,13 +64,14 @@ install:
     pip install --upgrade setuptools
   # Install only from travis wheelhouse
   - if [ -z "$PRE" ]; then
-        wheelhouse_pip_install python-dateutil $NUMPY $PANDAS pyparsing pillow sphinx!=1.3.0 traitlets>=4.1.0;
+        wheelhouse_pip_install python-dateutil $NUMPY $PANDAS pyparsing pillow sphinx!=1.3.0;
     else
-        pip install $PRE python-dateutil $NUMPY pyparsing pillow sphinx!=1.3.0 traitlets>=4.1.0;
+        pip install $PRE python-dateutil $NUMPY pyparsing pillow sphinx!=1.3.0;
     fi
   # Always install from pypi
   - pip install $PRE pep8 cycler
   - 'pip install https://github.com/tacaswell/nose/zipball/mnt_py36_compat#egg=nose'
+  - 'pip install https://github.com/rmorshea/traitlets/zipball/observe_validate_default#egg=traitlets'
 
   # Install mock on python 2. Python 2.6 requires mock 1.0.1
   # Since later versions have dropped support
