Added sorting of working set used by zc.recipe.egg

zc.recipe.egg_/src/zc/recipe/egg/egg.py

@@ -15,8 +15,10 @@
 """
 
 import copy
+import glob
 import logging
 import os
+import pkg_resources
 import re
 import sys
 import zc.buildout.easy_install
@@ -90,6 +92,31 @@ class Eggs(object):
 
     update = install
 
+    def _sort_working_set(self, ws):
+        develop_paths = set()
+        pattern = os.path.join(self.options['develop-eggs-directory'], '*.egg-link')
+        for egg_link in glob.glob(pattern):
+            with open(egg_link, 'rt') as f:
+                path = f.readline().strip()
+                if path:
+                    develop_paths.add(path)
+
+        egg_directory = os.path.join(self.options['eggs-directory'], '')
+        sorted_paths = []
+        egg_paths = []
+        other_paths = []
+        for dist in ws:
+            path = dist.location
+            if path in develop_paths:
+                sorted_paths.append(path)
+            elif os.path.commonprefix([path, egg_directory]) == egg_directory:
+                egg_paths.append(path)
+            else:
+                other_paths.append(path)
+        sorted_paths.extend(egg_paths)
+        sorted_paths.extend(other_paths)
+        return pkg_resources.WorkingSet(sorted_paths)
+
     def _working_set(
         self,
         distributions,
@@ -133,6 +160,7 @@ class Eggs(object):
                     path=[develop_eggs_dir],
                     newest=newest,
                     allow_hosts=allow_hosts)
+            ws = self._sort_working_set(ws)
             cache_storage[cache_key] = ws
 
         # `pkg_resources.WorkingSet` instances are mutable, so we need to return