restore cache

bin/compile

@@ -51,10 +51,10 @@ if [ -f "lib/python2.7" ]; then
 fi
 
 # Copy artifacts out of cache if exists.
-# mkdir -p $CACHE_DIR
-# for dir in $VIRTUALENV_DIRS; do
-#   cp -R $CACHE_DIR/$dir . &> /dev/null || true
-# done
+mkdir -p $CACHE_DIR
+for dir in $VIRTUALENV_DIRS; do
+  cp -R $CACHE_DIR/$dir . &> /dev/null || true
+done
 
 # Create virtualenv. Rebuild if corrupt.
 set +e
@@ -62,9 +62,6 @@ set +e
 echo "-----> Preparing Python interpreter ($PYTHON_VERSION)"
 # PYTHON_EXE=$($BIN_DIR/python-build install $PYTHON_VERSION --quiet)
 
-export BUILD_DIR
-source $BIN_DIR/python-build
-
 PYTHON_EXE=$BUILD_DIR/.vendor/python/bin/python
 
 echo "-----> Preparing virtualenv version $(virtualenv --version)"