Set EDX_PLATFORM_REVISION to unknown if not in a git repo.

- Set EDX_PLATFORM_REVISION to unknown if not in a git repo.
- Use the path of the configuration file to determine where the
  repository is.

cms/envs/common.py

@@ -37,7 +37,7 @@ from path import path
 from warnings import simplefilter
 
 from lms.djangoapps.lms_xblock.mixin import LmsBlockMixin
-from dealer.git import git
+import dealer.git
 from xmodule.modulestore.edit_info import EditInfoMixin
 
 ############################ FEATURE CONFIGURATION #############################
@@ -296,7 +296,12 @@ MANAGERS = ADMINS
 EDX_PLATFORM_REVISION = os.environ.get('EDX_PLATFORM_REVISION')
 
 if not EDX_PLATFORM_REVISION:
-    EDX_PLATFORM_REVISION = git.revision
+    try:
+        # Get git revision of the current file
+        EDX_PLATFORM_REVISION = dealer.git.Backend(path=REPO_ROOT).revision
+    except TypeError:
+        # Not a git repository
+        EDX_PLATFORM_REVISION = 'unknown'
 
 # Static content
 STATIC_URL = '/static/' + EDX_PLATFORM_REVISION + "/"

lms/envs/common.py

@@ -33,7 +33,7 @@ from warnings import simplefilter
 from django.utils.translation import ugettext_lazy as _
 
 from .discussionsettings import *
-from dealer.git import git
+import dealer.git
 from xmodule.modulestore.modulestore_settings import update_module_store_settings
 from lms.djangoapps.lms_xblock.mixin import LmsBlockMixin
 
@@ -688,7 +688,12 @@ MANAGERS = ADMINS
 EDX_PLATFORM_REVISION = os.environ.get('EDX_PLATFORM_REVISION')
 
 if not EDX_PLATFORM_REVISION:
-    EDX_PLATFORM_REVISION = git.revision
+    try:
+        # Get git revision of the current file
+        EDX_PLATFORM_REVISION = dealer.git.Backend(path=REPO_ROOT).revision
+    except TypeError:
+        # Not a git repository
+        EDX_PLATFORM_REVISION = 'unknown'
 
 # Static content
 STATIC_URL = '/static/'

requirements/edx/base.txt

@@ -11,7 +11,7 @@ html5lib==0.999
 boto==2.32.1
 celery==3.0.19
 cssselect==0.9.1
-dealer==0.2.3
+dealer==2.0.4
 defusedxml==0.4.1
 distribute>=0.6.28, <0.7
 django-babel-underscore==0.1.0