diff --git a/lib/galaxy/dependencies/__init__.py b/lib/galaxy/dependencies/__init__.py
index 826b46e1095..794982721c4 100644
--- a/lib/galaxy/dependencies/__init__.py
+++ b/lib/galaxy/dependencies/__init__.py
@@ -15,6 +15,7 @@ class ConditionalDependencies( object ):
         self.config_file = config_file
         self.config = None
         self.job_runners = []
+        self.authenticators = []
         self.conditional_reqs = []
         self.parse_configs()
         self.get_conditional_requirements()
@@ -31,6 +32,18 @@ class ConditionalDependencies( object ):
         except (OSError, IOError):
             pass
 
+        # Parse auth conf
+        auth_conf_xml = self.config.get(
+            "auth_config_file",
+            join( dirname( self.config_file ), 'auth_conf.xml' ) )
+        try:
+            for auth in ElementTree.parse( auth_conf_xml ).findall( 'authenticator' ):
+                auth_type = auth.find('type')
+                if auth_type is not None:
+                    self.authenticators.append( auth_type.text )
+        except (OSError, IOError):
+            pass
+
     def get_conditional_requirements( self ):
         crfile = join( dirname( __file__ ), 'conditional-requirements.txt' )
         for req in pkg_resources.parse_requirements( open( crfile ).readlines() ):
@@ -76,6 +89,10 @@ class ConditionalDependencies( object ):
         # pygments is a dependency of weberror and only weberror
         return self.check_weberror()
 
+    def check_python_ldap( self ):
+        return ('ldap' in self.authenticators or
+                'activedirectory' in self.authenticators)
+
 
 def optional( config_file ):
     rval = []
diff --git a/lib/galaxy/dependencies/conditional-requirements.txt b/lib/galaxy/dependencies/conditional-requirements.txt
index 4f7c8a9a9dc..c341d99023d 100644
--- a/lib/galaxy/dependencies/conditional-requirements.txt
+++ b/lib/galaxy/dependencies/conditional-requirements.txt
@@ -10,3 +10,4 @@ pbs_python
 drmaa
 statsd
 # PyRods not in PyPI
+python-ldap==2.4.25