Debug Travis config

Author: sdispater

.travis.yml

@@ -35,6 +35,7 @@ matrix:
 before_install:
   - pip install codecov
   - pip install poetry --pre
+  - echo $(which python$VENV)
 
 install:
   - |
@@ -52,7 +53,7 @@ install:
       fi
   - |
       if ([ "$VENV" != "" ] && [ "$VENV" != "pypy" ]); then
-        virtualenv --python="$(which python$VENV)" "$HOME/virtualenvs/venv-$VENV"
+        virtualenv --python=$(which python$VENV) "$HOME/virtualenvs/venv-$VENV"
         source "$HOME/virtualenvs/venv-$VENV/bin/activate"
       fi
   - $HOME/virtualenv/python$TRAVIS_PYTHON_VERSION/bin/poetry install -v