Just bottow the deps from pgi

.travis.yml

@@ -4,7 +4,7 @@ matrix:
       sudo: required
       dist: trusty
       language: generic
-      env: PYTHON="python2" PACKAGES="pep8 pyflakes python-dev python-gi python-gi-cairo python-faulthandler libpython-dev libjpeg-dev python-cairo python-gtk2 python-gobject python-gtksourceview3 python-rsvg"
+      env: PYTHON="python2" PACKAGES="pep8 pyflakes python-gi python-gi-cairo python-faulthandler libpython-dev libjpeg-dev python-cairo python-gtk2 python-gobject python-gtksourceview3 python-rsvg"
     - os: linux
       sudo: required
       dist: trusty
@@ -14,6 +14,7 @@ matrix:
 install:
  - if [ "$PYTHON" == "pypy" ]; then sudo add-apt-repository -y ppa:pypy/ppa; fi
  - sudo apt-get update -q
+ - sudo apt-get install --no-install-recommends -y xvfb gir1.2-gtk-3.0 gobject-introspection libcairo2-dev libglib2.0-dev libgirepository1.0-dev build-essential libcairo2-dbg libglib2.0-0-dbg $(echo $PACKAGES)
  - sudo ./install/install_dependencies.sh
  - virtualenv --python=$PYTHON _venv
  - source _venv/bin/activate