Use $HOME for mvn to see if this can use some travis standard repos or so.

.travis.yml

@@ -28,6 +28,7 @@ matrix:
 before_install:
   - ci/before_install.sh
   - export PATH="$HOME/bin:$PATH"
+  - export TRAVISHOME="$HOME"
 
 install:
   - pip install coveralls

tox.ini

@@ -11,8 +11,8 @@ python =
 [testenv]
 # usedevelop required to enable coveralls source code view.
 usedevelop = True
+passenv = TRAVISHOME
 whitelist_externals = mvn
-passenv = TRAVIS TRAVIS_JOB_ID TRAVIS_BRANCH
 setenv =
   CLASSPATH = {envdir}/javalib/*
   driver-mock: TESTNAME=test_mock
@@ -28,10 +28,10 @@ deps =
   coverage
 commands =
   python --version
-  python ci/jipconf_subst.py {envdir} {toxworkdir}/shared
+  python ci/jipconf_subst.py {envdir} {env:TRAVISHOME:{toxworkdir}/shared}
   driver-hsqldb:  jip install org.hsqldb:hsqldb:1.8.0.10
   driver-sqliteXerial:  jip install org.xerial:sqlite-jdbc:3.7.2
-  driver-mock: mvn -Dmaven.repo.local={toxworkdir}/shared/.m2/repository -f mockdriver/pom.xml install
+  driver-mock: mvn -Dmaven.repo.local={env:TRAVISHOME:{toxworkdir}/shared}/.m2/repository -f mockdriver/pom.xml install
   driver-mock: jip install org.jaydebeapi:mockdriver:1.0-SNAPSHOT
   coverage run -a --source jaydebeapi test/testsuite.py {env:TESTNAME}
   driver-hsqldb: coverage run -a --source jaydebeapi test/doctests.py