gitclone: new 'shared' option

README.rst

@@ -437,14 +437,6 @@ The default git command is `git`, if for a any reason you don't
 have git in your path, you can specify git binary path with `git-command`
 option.
 
-Sparse checkout
-~~~~~~~~~~~~~~~
-
-The value of the `sparse-checkout` option is written to the
-``$GITDIR/info/sparse-checkout`` file, which is used to populate the working
-directory sparsely. See the `SPARSE CHECKOUT` section of ``git-read-tree``
-command. This feature is disabled if the value is empty or unset.
-
 Ignore SSL certificate
 ~~~~~~~~~~~~~~~~~~~~~~
 
@@ -461,6 +453,18 @@ boolean option::
   repository = https://example.net/example.git/
   ignore-ssl-certificate = true
 
+Other options
+~~~~~~~~~~~~~
+
+shared
+    Clone with ``--shared`` option if true. See ``git-clone`` command.
+
+sparse-checkout
+    The value of the `sparse-checkout` option is written to the
+    ``$GITDIR/info/sparse-checkout`` file, which is used to populate the working
+    directory sparsely. See the `SPARSE CHECKOUT` section of ``git-read-tree``
+    command. This feature is disabled if the value is empty or unset.
+
 Full example
 ~~~~~~~~~~~~
 

slapos/recipe/gitclone.py

@@ -140,8 +140,10 @@ class Recipe(object):
       self.git_command = 'git'
     self.sparse = options.get('sparse-checkout', '').strip()
     # Set boolean values
-    for key in ('develop', 'use-cache', 'ignore-ssl-certificate'):
+    for key in ('develop', 'shared', 'use-cache', 'ignore-ssl-certificate'):
       setattr(self, key.replace('-', '_'), options.get(key, '').lower() in TRUE_VALUES)
+    if self.shared:
+      self.use_cache = False
 
     self.networkcache = buildout.get('networkcache', {})
 
@@ -194,6 +196,8 @@ class Recipe(object):
                 self.repository,
                 self.location]
     config = []
+    if self.shared:
+      git_clone_command.append('--shared')
     if self.sparse:
       git_clone_command.append('--no-checkout')
       config.append('core.sparseCheckout=true')