# HG changeset patch
# User Gregory Szorc <gregory.szorc@gmail.com>
# Date 2018-03-22 01:13:40
# Node ID 49630e75635db139a1067ccbdd65f078587191d7
# Parent  68ee61822182ae3f783c11f3d21d79e323aa4472

thirdparty: allow zope.interface.advice to be lazily imported

The symbol from this module is only used in functions. Let's access
that symbol through its imported module so importing
zope.interface.advice can be lazy.

Differential Revision: https://phab.mercurial-scm.org/D2931

diff --git a/mercurial/thirdparty/zope/interface/declarations.py b/mercurial/thirdparty/zope/interface/declarations.py
--- a/mercurial/thirdparty/zope/interface/declarations.py
+++ b/mercurial/thirdparty/zope/interface/declarations.py
@@ -34,7 +34,7 @@ from types import MethodType
 from types import ModuleType
 import weakref
 
-from .advice import addClassAdvisor
+from . import advice as advicemod
 from .interface import InterfaceClass
 from .interface import SpecificationBase
 from .interface import Specification
@@ -451,7 +451,7 @@ def _implements(name, interfaces, classI
         raise TypeError(name+" can be used only once in a class definition.")
 
     locals['__implements_advice_data__'] = interfaces, classImplements
-    addClassAdvisor(_implements_advice, depth=3)
+    advicemod.addClassAdvisor(_implements_advice, depth=3)
 
 def implements(*interfaces):
     """Declare interfaces implemented by instances of a class
@@ -732,7 +732,7 @@ def classProvides(*interfaces):
 
     locals["__provides__"] = _normalizeargs(interfaces)
 
-    addClassAdvisor(_classProvides_advice, depth=2)
+    advicemod.addClassAdvisor(_classProvides_advice, depth=2)
 
 def _classProvides_advice(cls):
     # This entire approach is invalid under Py3K.  Don't even try to fix