.

component/ZEO/buildout.cfg

@@ -3,22 +3,34 @@
 
 [buildout]
 extends =
+    ../ZODB/buildout.cfg
     ../git/buildout.cfg
 
 parts = ZEO/scripts
 
 
-# ZEO allows to use either ZEO4 or ZEO5
-# To select which version to use users should do:
-#
-#   [ZEO]
-#   egg = ${ZEO<version>:egg}
-#
-# By default ZEO4 is used.
+# ZEO provides either ZEO<X> depending on ZODB major version.
 [ZEO]
-recipe  = zc.recipe.egg:eggs
-egg     = ${ZEO4:egg}
-eggs    = ${:egg}
+recipe  = slapos.recipe.build
+depends = ${ZODB:egg}
+init =
+  # link/depend to ZEO<ZODB.major>
+  zodb = self.buildout['ZODB']
+  zeo_x = 'ZEO'+zodb['major']
+  options['depends'] += '$${%s:egg}' % zeo_x
+  zeo_x = self.buildout[zeo_x]
+  options['egg'] = zeo_x['egg']
+  #options['location'] = zeo_x['setup']		XXX needed? reenable?
+
+  # update [versions] from what is needed by ZEO<X>
+  for _ in zeo_x['egg_versions'].splitlines():
+    egg, eq, version = _.split() # 'transaction = 1.7.0'
+    assert eq == '='
+    self.buildout['versions'][egg] = version
+  # propagate updated [versions] -> easy_install
+  # (buildout does this in Buildout constructor)
+  import zc.buildout.easy_install
+  zc.buildout.easy_install.default_versions(self.buildout['versions'])
 
 
 # ZEO/scripts installs scripts from ZEO
@@ -50,3 +62,8 @@ git-executable = ${git:location}/bin/git
 recipe  = zc.recipe.egg:eggs
 egg     = ZEO
 eggs    = ${:egg}
+
+egg_versions =
+  ZEO = 5.2.2
+  trollius = 2.2.post1
+  futures = 3.2.0

software/neoppod/software-zodb5.cfg

@@ -8,16 +8,5 @@ eggs += mock
 egg = ${ZEO5:egg}
 
 [versions]
-ZEO = 5.2.2
-
 # BBB: ZEO
 msgpack = 0.5.6
-
-# Required by:
-# ZEO==5.2.0
-# trollius==2.2.post1
-futures = 3.2.0
-
-# Required by:
-# ZEO==5.2.0
-trollius = 2.2.post1