1449-Prefer Mercurial over git

ensure_dependencies.py

 #!/usr/bin/env python
 # coding: utf-8
 
 # This file is part of the Adblock Plus build tools,
 # Copyright (C) 2006-2014 Eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
@@ skipping 69 matching lines @@
   def get_revision_id(self, repo, rev="HEAD"):
     command = ["git", "rev-parse", "--revs-only", rev]
     return subprocess.check_output(command, cwd=repo).strip()
 
   def pull(self, repo):
     subprocess.check_call(["git", "fetch", "--quiet", "--all", "--tags"], cwd=repo)
 
   def update(self, repo, rev):
     subprocess.check_call(["git", "checkout", "--quiet", rev], cwd=repo)
 
-repo_types = {
-  "hg": Mercurial(),
-  "git": Git(),
-}
+repo_types = OrderedDict((
+  ("hg", Mercurial()),
+  ("git", Git()),
+))
 
 def parse_spec(path, line):
   if "=" not in line:
     logging.warning("Invalid line in file %s: %s" % (path, line))
     return None, None
 
   key, value = line.split("=", 1)
   key = key.strip()
   items = value.split()
   if not len(items):
@@ skipping 142 matching lines @@
       else:
         logging.warning("Cannot restart %s automatically, please rerun" % target)
 
 if __name__ == "__main__":
   logging.basicConfig(format='%(levelname)s: %(message)s', level=logging.INFO)
   repos = sys.argv[1:]
   if not len(repos):
     repos = [os.getcwd()]
   for repo in repos:
     resolve_deps(repo)