change XOS_ROOT to XOS_DIR
diff --git a/planetstack/dependency_walker.py b/planetstack/dependency_walker.py
index 1959a7a..6120d7d 100644
--- a/planetstack/dependency_walker.py
+++ b/planetstack/dependency_walker.py
@@ -2,7 +2,7 @@
 
 import os
 import imp
-from planetstack.config import Config, XOS_ROOT
+from planetstack.config import Config, XOS_DIR
 import inspect
 import time
 import traceback
@@ -13,14 +13,14 @@
 from core.models import *
 
 from util.logger import Logger, logging
-logger = Logger(level=logging.INFO)

+logger = Logger(level=logging.INFO)
 
 missing_links={}
 
 try:
 	dep_data = open(Config().dependency_graph).read()
 except:
-	dep_data = open(XOS_ROOT + '/model-deps').read()
+	dep_data = open(XOS_DIR + '/model-deps').read()
 
 dependencies = json.loads(dep_data)
 
diff --git a/planetstack/planetstack/config.py b/planetstack/planetstack/config.py
index 923964d..0654fe6 100644
--- a/planetstack/planetstack/config.py
+++ b/planetstack/planetstack/config.py
@@ -12,8 +12,8 @@
 """
 """
 
-XOS_ROOT = "/opt/planetstack"
-DEFAULT_CONFIG_FN = os.path.join(XOS_ROOT, "xos_config")
+XOS_DIR = "/opt/planetstack"
+DEFAULT_CONFIG_FN = os.path.join(XOS_DIR, "xos_config")
 
 # warning for now, remove once we're sure everyone has made the change
 if (os.path.exists("/opt/planetstack/plstackapi_config") and (not os.path.exists(DEFAULT_CONFIG_FN))):