Bsongis/travis fail (#5882)

Travis again here

.travis.yml

@@ -1,22 +1,16 @@
 sudo: required
 dist: trusty
-language: python
+language: cpp
 compiler: gcc
 
-virtualenv:
-  system_site_packages: true
-
-python:
-  - 3.4
-
 env:
   global:
-    #- QT_BASE=53
+    # - QT_BASE=53
     # - QT_BASE=54
     # - QT_BASE=55
     # - QT_BASE=56
-     - QT_BASE=57
-    #- GCC_ARM=/opt/gcc-arm-none-eabi/bin
+    - QT_BASE=57
+    # - GCC_ARM=/opt/gcc-arm-none-eabi/bin
     - AVR_FLAVORS="AVR9X 9X GRUVIN9X MEGA2560"
     - PYTHONPATH=${PYTHONPATH}:/usr/lib/python3/dist-packages
   matrix:
@@ -55,9 +49,11 @@ before_install:
   - if [ "$QT_BASE" = "56" ]; then sudo add-apt-repository ppa:beineri/opt-qt562-trusty -y; fi
   - if [ "$QT_BASE" = "57" ]; then sudo add-apt-repository ppa:beineri/opt-qt571-trusty -y; fi
   - sudo apt-get update -qq
+  - pyenv uninstall -f 2.7.6 && pyenv install 3.5.4 && pyenv global 3.5.4
+  - pip install pyqt5
 
 install:
-  - sudo apt-get --yes --force-yes install python3-pyqt5 curl libmpfr4 libmpc3 libfox-1.6-dev libgtest-dev
+  - sudo apt-get --yes --force-yes install curl libmpfr4 libmpc3 libfox-1.6-dev libgtest-dev
   - |
     if [[ " ${AVR_FLAVORS} " =~ " ${FLAVOR} " || ${FLAVOR} == "ALL" ]]; then
       wget --quiet https://launchpad.net/ubuntu/+source/gcc-avr/1:4.9.2+Atmel3.5.0-1/+build/8403710/+files/gcc-avr_4.9.2+Atmel3.5.0-1_amd64.deb