WIP

src/zc/buildout/buildout.py

@@ -652,6 +652,7 @@ class Buildout(DictMixin):
         options = self['buildout']
         link = options.get('link', "")
         if link and shared_path:
+          os.environ.set('BUILDOUT_HOME', shared_path)
           self._save_installed_options()
           return
 
@@ -666,6 +667,7 @@ class Buildout(DictMixin):
         if self.show_picked_versions or self.update_versions_file:
             self._print_picked_versions()
         self._unload_extensions()
+        os.environ.set('BUILDOUT_HOME', os.curdir)
 
     def _install_parts(self, install_args):
         __doing__ = 'Installing.'
@@ -956,6 +958,10 @@ class Buildout(DictMixin):
 
     def _read_installed_part_options(self):
         old = self['buildout']['installed']
+        link = options.get('link', "")
+        new_path = os.curdir
+        shared_path = shared_stack_path(link)
+
         if old and os.path.isfile(old):
             fp = open(old)
             sections = zc.buildout.configparser.parse(fp, old)
@@ -967,7 +973,7 @@ class Buildout(DictMixin):
                         for k, v in _spacey_defaults:
                             value = value.replace(k, v)
                         options[option] = value
-                result[section] = self.Options(self, section, options)
+                result[section] = self.Options(self, section, options.replace(shared_path, new_path))
 
             return result
         else: