diff -r aa547cf3bf0d -r 7f5c455ec7d1 schemas/__init__.py
--- a/schemas/__init__.py	Thu Sep 08 18:09:36 2011 +0200
+++ b/schemas/__init__.py	Tue Sep 13 15:41:11 2011 +0200
@@ -1,4 +1,4 @@
-# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
 #
 # This file is part of CubicWeb.
@@ -15,12 +15,10 @@
 #
 # You should have received a copy of the GNU Lesser General Public License along
 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
-"""some utilities to define schema permissions
+"""some constants and classes to define schema permissions"""
 
-"""
 __docformat__ = "restructuredtext en"
 
-from rql.utils import quote
 from cubicweb.schema import RO_REL_PERMS, RO_ATTR_PERMS, \
      PUB_SYSTEM_ENTITY_PERMS, PUB_SYSTEM_REL_PERMS, \
      ERQLExpression, RRQLExpression
@@ -35,59 +33,19 @@
 # execute, readable by anyone
 HOOKS_RTYPE_PERMS = RO_REL_PERMS # XXX deprecates
 
-def _perm(names):
-    if isinstance(names, (list, tuple)):
-        if len(names) == 1:
-            names = quote(names[0])
-        else:
-            names = 'IN (%s)' % (','.join(quote(name) for name in names))
-    else:
-        names = quote(names)
-    #return u' require_permission P, P name %s, U in_group G, P require_group G' % names
-    return u' require_permission P, P name %s, U has_group_permission P' % names
 
-
-def xperm(*names):
-    return 'X' + _perm(names)
-
-def xexpr(*names):
-    return ERQLExpression(xperm(*names))
-
-def xrexpr(relation, *names):
-    return ERQLExpression('X %s Y, Y %s' % (relation, _perm(names)))
-
-def xorexpr(relation, etype, *names):
-    return ERQLExpression('Y %s X, X is %s, Y %s' % (relation, etype, _perm(names)))
-
-
-def sexpr(*names):
-    return RRQLExpression('S' + _perm(names), 'S')
+from logilab.common.modutils import LazyObject
+from logilab.common.deprecation import deprecated
+class MyLazyObject(LazyObject):
 
-def restricted_sexpr(restriction, *names):
-    rql = '%s, %s' % (restriction, 'S' + _perm(names))
-    return RRQLExpression(rql, 'S')
-
-def restricted_oexpr(restriction, *names):
-    rql = '%s, %s' % (restriction, 'O' + _perm(names))
-    return RRQLExpression(rql, 'O')
-
-def oexpr(*names):
-    return RRQLExpression('O' + _perm(names), 'O')
-
+    def _getobj(self):
+        try:
+            return super(MyLazyObject, self)._getobj()
+        except ImportError:
+            raise ImportError('In cubicweb 3.14, function %s has been moved to '
+                              'cube localperms. Install it first.' % self.obj)
 
-# def supdate_perm():
-#     return RRQLExpression('U has_update_permission S', 'S')
-
-# def oupdate_perm():
-#     return RRQLExpression('U has_update_permission O', 'O')
-
-def relxperm(rel, role, *names):
-    assert role in ('subject', 'object')
-    if role == 'subject':
-        zxrel = ', X %s Z' % rel
-    else:
-        zxrel = ', Z %s X' % rel
-    return 'Z' + _perm(names) + zxrel
-
-def relxexpr(rel, role, *names):
-    return ERQLExpression(relxperm(rel, role, *names))
+for name in ('xperm', 'xexpr', 'xrexpr', 'xorexpr', 'sexpr', 'restricted_sexpr',
+             'restricted_oexpr', 'oexpr', 'relxperm', 'relxexpr', '_perm'):
+    msg = '[3.14] import %s from cubes.localperms' % name
+    globals()[name] = deprecated(msg)(MyLazyObject('cubes.localperms', name))