Update travis.yml so coverage works and also to load pyicu; this entails

moving to the 'trusty' distribution which has Python 3.3 (coverage needs
3.3 or more) and also a Python 3 version of pyicu. This doesn't use the
virtualenv at all, so the various pip installs are removed. There are
still some minor omissions, noted in FIXMEs; in particular, the code
should be tested under Python 3.2 (which is the minimum Gramps
requirement).

.travis.yml

@@ -1,11 +1,39 @@
+#
+# Gramps - a GTK+/GNOME based genealogy program
+#
+# Copyright (C) 2015-2015  Doug Blank
+# Copyright (C) 2016       DaAwesomeP
+# Copyright (C) 2016       QuLogic
+# Copyright (C) 2016       Tim G L Lyons
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
 # After changing this file, check it on:
 #   http://lint.travis-ci.org/
 
+sudo: required
+dist: trusty
 language: python
 python:
- - 3.4
-sudo: false
-cache: pip
+ - 3.3 # This is irrelevant, because the virtualenv is not used at all
+
+# FIXME: The minimum requirement for Gramps is Python 3.2, so a test environment
+# for Python 3.2 should be added to this environment which is Python 3.3. It
+# will not be possible to run coverage under Python 3.2, because coverage is
+# Python 3.3 (or above) only.
+
 addons:
   apt:
     packages:
@@ -23,35 +51,61 @@ addons:
     - python3-dev
     - python3-nose
     - python3-mock
+    - python3-pyicu
+    - python3-coverage
 
 before_install:
- - pip install --upgrade pip
- - pip install --upgrade setuptools wheel nose coverage codecov
 
 install:
- - travis_retry pip install --upgrade pillow
- - travis_retry pip install pyicu==1.8
+# The working directory is set to /home/travis/build/gramps-project/gramps
+# by the automatic git checkout.
 
- # - cd $TRAVIS_BUILD_DIR
- # $TRAVIS_BUILD_DIR is set to the location of the cloned repository:
- # for example: /home/travis/build/gramps-project/gramps
+# Download Sean Ross-Ross's Pure Python module containing a framework to
+# manipulate and analyze python astÕs and bytecode. This is loaded to 
+# /home/travis/build/gramps-project/gramps/meta
+# FIXME: This should be loaded from the release directory at
+# https://pypi.python.org/pypi/meta
  - git clone -b master https://github.com/srossross/meta
+
+# Build Gramps package. This seems to copy everything to
+# /home/travis/build/scripts-3.3
  - python setup.py build
 
 before_script:
-#    - sudo Xvfb :99 -ac &
-#    - export DISPLAY=:99
+# Create the Gramps database directory.
  - mkdir -p ~/.gramps/grampsdb/
+# set PYTHONPATH so the directly installed module (meta) is picked up from
+# /home/travis/build/gramps-project/gramps/meta
+ - export PYTHONPATH=meta
+# set module exclusions. --exclude=TestUser because of older version of mock
+# without configure_mock
+ - export EXCLUDE="--exclude=TestcaseGenerator --exclude=vcard
+   --exclude=merge_ref_test --exclude=user_test --exclude=constfunc_test.py"
+# set GRAMPS_RESOURCES for locale, data,image and documentation
+ - export GRAMPS_RESOURCES=.
 
 script:
- # --exclude=TestUser because of older version of mock
- #                    without configure_mock
- - PYTHONPATH=meta GRAMPS_RESOURCES=. nosetests3 --nologcapture --with-coverage --cover-package=gramps --exclude=TestcaseGenerator --exclude=vcard --exclude=merge_ref_test  --exclude=user_test gramps
+# Ignore the virtualenv entirely. Use nosetests3, python3 (3.4.0) and coverage
+# from /usr/bin. Use libraries from /usr/lib/python3.4,
+# /usr/local/lib/python3.4/dist-packages and /usr/lib/python3/dist-packages
+ - nosetests3 --nologcapture --with-coverage --cover-package=gramps $EXCLUDE gramps
+# FIXME: This should have run from the current directory, rather than from
+# gramps, because there is some test code in that directory.
+
+# give an error for any trailing whitespace
  - if git --no-pager grep --color -n --full-name '[ 	]$' -- \*.py; then
      echo "ERROR - Trailing whitespace found in source file(s)";
      exit 1;
    fi
 
 after_success:
- - codecov
+# apt-get installs python3-coverage, but codecov only invokes coverage, so make
+# a link
+ - sudo ln /usr/bin/python3-coverage /usr/bin/coverage
 
+# We have to use the bash script because the apt-get coverage does not install
+# codecov. If we used pip to install codecov, it would run inside the
+# virtualenv, and that doesn't work. Change the path to ensure that codecov
+# picks up coverage from /usr/bin, rather than from
+# /home/travis/virtualenv/python3.3.6/bin/
+ - PATH=/usr/bin:$PATH bash <(curl -s https://codecov.io/bash)