Clean up Travis CI scripts a bit. Put in LD_LIBRARY_PATH

Change-Id: I5de0ae745caded190d3c02e196c79cfc7487668f

ci/travis_before_script_cpp.sh

@@ -15,10 +15,6 @@
 
 set -ex
 
-source $TRAVIS_BUILD_DIR/ci/travis_install_conda.sh
-conda install -y --channel apache/channel/dev parquet-cpp
-export PARQUET_HOME=$MINICONDA
-
 : ${CPP_BUILD_DIR=$TRAVIS_BUILD_DIR/cpp-build}
 
 mkdir $CPP_BUILD_DIR

ci/travis_script_python.sh

@@ -14,12 +14,16 @@
 
 set -e
 
+source $TRAVIS_BUILD_DIR/ci/travis_install_conda.sh
+
 PYTHON_DIR=$TRAVIS_BUILD_DIR/python
 
 # Re-use conda installation from C++
 export MINICONDA=$HOME/miniconda
 export PATH="$MINICONDA/bin:$PATH"
-export PARQUET_HOME=$MINICONDA
+
+export ARROW_HOME=$ARROW_CPP_INSTALL
+export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ARROW_CPP_INSTALL
 
 pushd $PYTHON_DIR
 
@@ -41,10 +45,7 @@ python_version_tests() {
   # Other stuff pip install
   pip install -r requirements.txt
 
-  export ARROW_HOME=$ARROW_CPP_INSTALL
-
-  python setup.py build_ext \
-		 --inplace
+  python setup.py build_ext --inplace
 
   python -m pytest -vv -r sxX pyarrow