MNT: don't install pyqt by default

it is 'pyqt' not 'pyqt4'...

MNT: debug!

the quotations... it is always the quotations

and those single quotes too...

badly formatted if/elif block?

does whitespace matter?

.travis.yml

@@ -51,10 +51,15 @@ install:
     - conda update conda --yes
     - conda create -n test_env python=${PYTHON} --yes
     - source activate test_env
-    - conda install numpy pyopengl pyqt pytest flake8 six coverage --yes
-    - if [${QT} == 'pyqt']; then
-          conda install pyqt4 --yes;
-      elif [${QT} == 'pyside']; then
+    - conda install numpy pyopengl pytest flake8 six coverage --yes
+    - echo ${QT}
+    - echo ${TEST}
+    - echo ${PYTHON}
+    
+    - if [ "${QT}" == "pyqt" ]; then
+          conda install pyqt --yes;
+      fi;
+    - if [ "${QT}" == "pyside" ]; then
           conda install pyside --yes;
       fi;
     - pip install pytest-xdist # multi-thread py.test