depot_tools: add gclient config for bare recipes-py repo

recipe_modules/gclient/config.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import types
 
 from recipe_engine.config import config_item_context, ConfigGroup, BadConf
 from recipe_engine.config import ConfigList, Dict, Single, Static, Set, List
 
 from . import api as gclient_api
@@ skipping 598 matching lines @@
 @config_ctx(includes=['infra'])
 def recipes_py(c):
   c.revisions['infra'] = 'origin/master'
   # TODO(tandrii): make use of c.patch_projects.
   c.revisions['infra/recipes-py'] = (
       gclient_api.RevisionFallbackChain('origin/master'))
   m = c.got_revision_mapping
   del m['infra']
   m['infra/recipes-py'] = 'got_revision'
 
+@config_ctx(config_vars={'GIT_MODE': True})
+def recipes_py_bare(c):
+  soln = c.solutions.add()
+  soln.name = 'recipes-py'
+  soln.url = ('https://chromium.googlesource.com/external/github.com/'
+              'luci/recipes-py')
+  c.got_revision_mapping['recipes-py'] = 'got_revision'
+
 @config_ctx()
 def chrome_from_buildspec(c):  # pragma: no cover
   soln = c.solutions.add()
   soln.name = 'chrome_from_buildspec'
   # This URL has to be augmented with the appropriate bucket by the recipe using
   # it.
   soln.url = ('svn://svn-mirror.golo.chromium.org/chrome-internal/trunk/tools/'
       'buildspec/build/')
   soln.custom_vars['svn_url'] = 'svn://svn-mirror.golo.chromium.org'
   soln.custom_deps = {}
@@ skipping 43 matching lines @@
   soln = c.solutions.add()
   soln.name = 'gerrit-test-cq-normal'
   soln.url = 'https://chromium.googlesource.com/playground/gerrit-cq/normal.git'
 
 # TODO(phajdan.jr): Move to proper repo and add coverage.
 @config_ctx()
 def valgrind(c):  # pragma: no cover
   """Add Valgrind binaries to the gclient solution."""
   c.solutions[0].custom_deps['src/third_party/valgrind'] = \
     ChromiumGitURL(c, 'chromium', 'deps', 'valgrind', 'binaries')