simplevcs: allow passing config into repo detection logic.

- allows proper check for repos together with requirement checks for Mercurial

rhodecode/lib/middleware/simplevcs.py

@@ -248,8 +248,11 b' class SimpleVCS(object):'
                 repo_name, db_repo.repo_type, scm_type)
             return False
 
-        return is_valid_repo(repo_name, base_path,
-                             explicit_scm=scm_type, expect_scm=scm_type)
+        config = db_repo._config
+        config.set('extensions', 'largefiles', '')
+        return is_valid_repo(
+            repo_name, base_path,
+            explicit_scm=scm_type, expect_scm=scm_type, config=config)
 
     def valid_and_active_user(self, user):
         """

rhodecode/lib/utils.py

@@ -240,7 +240,7 b' def _is_dir_writable(path):'
     return True
 
 
-def is_valid_repo(repo_name, base_path, expect_scm=None, explicit_scm=None):
+def is_valid_repo(repo_name, base_path, expect_scm=None, explicit_scm=None, config=None):
     """
     Returns True if given path is a valid repository False otherwise.
     If expect_scm param is given also, compare if given scm is the same
@@ -251,6 +251,7 b' def is_valid_repo(repo_name, base_path, '
     :param base_path:
     :param expect_scm:
     :param explicit_scm:
+    :param config:
 
     :return True: if given path is a valid repository
     """
@@ -260,7 +261,8 b' def is_valid_repo(repo_name, base_path, '
 
     try:
         if explicit_scm:
-            detected_scms = [get_scm_backend(explicit_scm)(full_path).alias]
+            detected_scms = [get_scm_backend(explicit_scm)(
+                full_path, config=config).alias]
         else:
             detected_scms = get_scm(full_path)