travis: fixes for tox 2.0 (env)

 - write PIP_WHEELHOUSE into travis_pip_install script
 - pass TESTS_SKIP_LIVESERVER/TESTS_USE_PHANTOMJS via "passenv"

tox 2.0 won't use (most of) the parent env anymore by default.

[ci skip]: passed in https://travis-ci.org/yourlabs/django-autocomplete-light/builds/62715708

.travis.yml

@@ -44,17 +44,18 @@ install:
   - mkdir -p bin
   - PATH=$PWD/bin:$PATH
   - PIP_INSTALL=bin/travis_pip_install
+  - PIP_WHEELHOUSE=$PWD/wheelhouse
   - printf '#!/bin/bash -x\n' > $PIP_INSTALL
   - declare -f travis_retry >> $PIP_INSTALL
   - printf '\necho "=====\nUsing pip-wrapper for \"$@\"\n=====\n" >&2\n' >> $PIP_INSTALL
   # Handle "pip install -e" for usedevelop from tox.
   - printf '\nif [ "$1" = "-e" ]; then pip install "$@"; exit $?; fi\n' >> $PIP_INSTALL
   # First try to install from wheelhouse.
-  - printf 'for i in "$@"; do pip install --no-index --find-links=${PIP_WHEELHOUSE} "$i"; done\n' >> $PIP_INSTALL
+  - printf "for i in \"\$@\"; do pip install --no-index --find-links=${PIP_WHEELHOUSE} \"\$i\"; done\n" >> $PIP_INSTALL
   # Then upgrade in case of outdated wheelhouse.
   - printf 'for i in "$@"; do travis_retry pip install --upgrade "$i"; done\n' >> $PIP_INSTALL
   # ..and add the new/current wheels.
-  - printf 'pip wheel --wheel-dir=${PIP_WHEELHOUSE} --find-links=${PIP_WHEELHOUSE} "$@"\n' >> $PIP_INSTALL
+  - printf "pip wheel --wheel-dir=${PIP_WHEELHOUSE} --find-links=${PIP_WHEELHOUSE} \"\$@\"\n" >> $PIP_INSTALL
   - chmod +x $PIP_INSTALL
 
   # Adjust tox.ini.
@@ -70,9 +71,6 @@ install:
   - cat $PIP_INSTALL
   - cat tox.ini
 
-  # Create wheels (skips existing ones from the cached wheelhouse).
-  - export PIP_WHEELHOUSE=$PWD/wheelhouse
-
   - travis_pip_install tox
   - if [ -n "$EXTRAREQ" ]; then travis_pip_install $EXTRAREQ; fi
 

tox.ini

@@ -20,6 +20,7 @@ setenv =
     DJANGO_SETTINGS_MODULE=test_project.settings
     PIP_ALLOW_EXTERNAL=true
     PYTHONPATH=test_project
+passenv = TESTS_SKIP_LIVESERVER TESTS_USE_PHANTOMJS
 
 [testenv:checkqa]
 basepython = python3.4