Always use build() in easy_install.py to install eggs.

CHANGES.SlapOS.txt

+1.7.1.post9
+-----------
+
+- Always use build() in easy_install.py to install eggs.
+
 1.7.1.post8
 -----------
 

setup.py

@@ -12,7 +12,7 @@
 #
 ##############################################################################
 name = "zc.buildout"
-version = "1.7.1.post8"
+version = "1.7.1.post9"
 
 import os
 from setuptools import setup

src/zc/buildout/easy_install.py

@@ -1049,6 +1049,8 @@ class Installer:
                     pkg_resources.Requirement.parse('setuptools')
                     )
                 if ws.find(requirement) is None:
+                    self._env.scan(
+                        self.build(str(requirement), {}))
                     for dist in self._get_dist(requirement, ws, False):
                         ws.add(dist)
 
@@ -1129,6 +1131,8 @@ class Installer:
                         else:
                             logger.debug('Adding required %r', str(req))
                         _log_requirement(ws, req)
+                        self._env.scan(
+                            self.build(str(req), {}))
                         for dist in self._get_dist(req,
                                                    ws, self._always_unzip):
                             ws.add(dist)