gitclone: new 'depth' option

README.rst

@@ -848,6 +848,9 @@ option to 'true'::
 Other options
 ~~~~~~~~~~~~~
 
+depth
+    Clone with ``--depth=<depth>`` option. See ``git-clone`` command.
+
 shared
     Clone with ``--shared`` option if true. See ``git-clone`` command.
 

slapos/recipe/build/tests.py

@@ -534,6 +534,16 @@ repository = %s
     # and running buildout again succeeed
     check_call([buildout])
 
+  def test_clone_depth(self):
+    options = {}
+    self.makeGitCloneRecipe(options).install()
+    get_depth = lambda: int(check_output(('git', 'rev-list', '--count', '@'),
+                                         cwd=options['location']))
+    self.assertLess(100, get_depth())
+    options['depth'] = 10
+    self.makeGitCloneRecipe(options).install()
+    self.assertEqual(10, get_depth())
+
 
 class MakeReadOnlyTests(unittest.TestCase):
 

slapos/recipe/gitclone.py

@@ -135,20 +135,16 @@ class Recipe(object):
         os.path.join(buildout['buildout']['parts-directory'], name))
     self.name = name
     for option in ('branch', 'revision', 'location', 'repository'):
-      value = options.get(option, '').strip()
-      if value == '':
-        setattr(self, option, None)
-      else:
-        setattr(self, option, value)
-    self.git_command = options.get('git-executable', '')
-    if self.git_command == '':
-      self.git_command = 'git'
-    self.sparse = options.get('sparse-checkout', '').strip()
+      setattr(self, option, options.get(option) or None)
+    self.git_command = options.get('git-executable') or 'git'
+    self.sparse = options.get('sparse-checkout')
+    depth = options.get('depth')
+    self.depth = int(depth) if depth else None
     # Set boolean values
     for key in ('develop', 'shared', 'use-cache', 'ignore-ssl-certificate',
                 'ignore-cloning-submodules'):
       setattr(self, key.replace('-', '_'), options.get(key, '').lower() in TRUE_VALUES)
-    if self.shared:
+    if self.shared or depth:
       self.use_cache = False
 
     self.networkcache = buildout.get('networkcache', {})
@@ -210,6 +206,8 @@ class Recipe(object):
       git_clone_command += '--branch', self.branch
     if self.ignore_ssl_certificate:
       config.append('http.sslVerify=false')
+    if self.depth is not None:
+      git_clone_command.append('--depth=%s' % self.depth)
 
     if config and self.use_cache:
       raise NotImplementedError