version up: persistent 4.5.0

Recent setuptools found a way to install by downloading wheels from PyPI.
But we want to control the versions of all components.

software/neoppod/software-common.cfg

@@ -45,8 +45,8 @@ eggs = neoppod[admin, ctl, master, storage-mysqldb]
   ${cython-zstd:egg}
   ${msgpack-python:egg}
   ${python-mysqlclient:egg}
+  ${BTrees:egg}
   psutil
-  BTrees
   ZODB
   zope.testing
   zodbtools
@@ -57,6 +57,17 @@ ZEO-patch-options = -p1
 ZEO-patches =
   ${:_profile_base_location_}/../../component/egg-patch/ZEO4/TCP_NODELAY.patch#b07288522d5c6857738240d948321df6
 
+# XXX: buildout fails to install properly eggs with setup_requires
+[BTrees]
+recipe = zc.recipe.egg:custom
+egg = ${:_buildout_section_name_}
+setup-eggs = ${persistent:egg}
+
+[persistent]
+recipe = zc.recipe.egg:custom
+egg = ${:_buildout_section_name_}
+setup-eggs = ${python-cffi:egg}
+###
 
 [slapos-deps-eggs]
 recipe = zc.recipe.egg
@@ -124,7 +135,7 @@ gitdb2 = 2.0.0
 msgpack = 0.5.6
 msgpack-python = 0.5.6
 mysqlclient = 1.3.12
-persistent = 4.2.3
+persistent = 4.5.0
 pycrypto = 2.6.1
 pycurl = 7.43.0
 setproctitle = 1.1.10