Ignore errors if a dependency is not installed (creating a new
virtualenv from scratch).
@@ -383,8 +383,8 @@ requirements: virtualenv .sdist-requirements install-runners
$(VIRTUALENV_DIR)/bin/pip install "six==1.11.0"
# Fix for Travis CI caching issue
- $(VIRTUALENV_DIR)/bin/pip uninstall -y "pytz"
- $(VIRTUALENV_DIR)/bin/pip uninstall -y "python-dateutil"
+ $(VIRTUALENV_DIR)/bin/pip uninstall -y "pytz" || echo "not installed"
+ $(VIRTUALENV_DIR)/bin/pip uninstall -y "python-dateutil" || echo "not installed"
# Install requirements
#
