echo "copying $dir…"

bin/compile

@@ -41,14 +41,14 @@ CACHE_DIR=$2
 NAME=$($BIN_DIR/detect $BUILD_DIR)
 
 # Where to store the Pip download cache.
-CACHED_DIRS='.heroku'
+CACHED_DIRS=".heroku"
 PIP_DOWNLOAD_CACHE=${PIP_DOWNLOAD_CACHE:-$CACHE_DIR/pip_downloads}
 
 # Static configurations for virtualenv caches.
-LEGACY_VIRTUALENV_LOC='.'
-MODERN_VIRTUALENV_LOC='.heroku/venv'
+LEGACY_VIRTUALENV_LOC="."
+MODERN_VIRTUALENV_LOC=".heroku/venv"
 LEGACY_VIRTUALENV_DIRS="bin include lib"
-LEGACY_VIRTUALENV_TRIGGER='lib/python2.7'
+LEGACY_VIRTUALENV_TRIGGER="lib/python2.7"
 
 
 # Python version. This will be used in the future to specify custom Pythons.
@@ -123,6 +123,7 @@ fi
 
 # Restore old artifacts from the cache.
 for dir in $CACHED_DIRS; do
+  echo "copying $dir..."
   cp -R $CACHED_DIR/$dir . &> /dev/null || true
 done
 
@@ -196,6 +197,7 @@ set -e
 
 # Store new artifacts in cache.
 for dir in $CACHED_DIRS; do
+  echo "copying $dir..."
   rm -rf $CACHE_DIR/$dir
   cp -R $dir $CACHE_DIR/
 done