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diff -rN -u old-trunk/setuptools-0.6c16dev2.egg/pkg_resources.py new-trunk/setuptools-0.6c16dev2.egg/pkg_resources.py
--- old-trunk/setuptools-0.6c16dev2.egg/pkg_resources.py	2010-11-03 14:23:46.000000000 -0600
+++ new-trunk/setuptools-0.6c16dev2.egg/pkg_resources.py	2010-11-03 14:24:01.000000000 -0600
@@ -808,18 +808,24 @@
         """
         dist = working_set.find(req)
         if dist is not None:
+            print "yyy 0 ", req, dist
             return dist
 
         # first try to find a platform-dependent dist
         for dist in self[req.key]:
+            print "yyy 1 ", req, dist
             if dist in req and dist.platform is not None:
+                print "yyy 2 ", req, dist
                 return dist
 
         # then try any other dist
         for dist in self[req.key]:
+            print "yyy 3 ", req, dist
             if dist in req:
+                print "yyy 4 ", req, dist
                 return dist
 
+        print "yyy 5 ", req, dist
         return self.obtain(req, installer) # try and download/install
 
     def obtain(self, requirement, installer=None):
@@ -2625,7 +2631,8 @@
 else:
     # Yes: ensure the requirements are met, by prefixing sys.path if necessary
     try:
-        working_set.require(__requires__)
+        if __requires__:
+            working_set.require(__requires__)
     except (VersionConflict, DistributionNotFound):     # try it without defaults already on sys.path
         working_set = WorkingSet([])    # by starting with an empty path
         try:
diff -rN -u old-trunk/setuptools-0.6c16dev2.egg/setuptools/package_index.py new-trunk/setuptools-0.6c16dev2.egg/setuptools/package_index.py
--- old-trunk/setuptools-0.6c16dev2.egg/setuptools/package_index.py	2010-11-03 14:23:47.000000000 -0600
+++ new-trunk/setuptools-0.6c16dev2.egg/setuptools/package_index.py	2010-11-03 14:24:01.000000000 -0600
@@ -216,7 +216,7 @@
 
         dists = distros_for_filename(fn)
         if dists:
-            self.debug("Found: %s", fn)
+            self.debug("Found: %s zzz 0 %s(%s)", fn, self.add, dists)
             map(self.add, dists)
 
     def url_ok(self, url, fatal=False):
@@ -437,41 +437,51 @@
             # Find a matching distribution; may be called more than once
 
             for dist in env[req.key]:
+                print "aaa 0", dist
 
                 if dist.precedence==DEVELOP_DIST and not develop_ok:
+                    print "aaa 1 ", dist
                     if dist not in skipped:
+                        print "aaa 2", dist
                         self.warn("Skipping development or system egg: %s",dist)
                         skipped[dist] = 1
                     continue
 
                 if dist in req and (dist.precedence<=SOURCE_DIST or not source):
+                    print "aaa 3", dist
                     return dist
 
 
 
         if force_scan:
+            print "aaa 4", dist
             self.prescan()
             self.find_packages(requirement)
             dist = find(self, requirement)
             
         if local_index is not None:
+            print "aaa 5", dist
             dist = dist or find(local_index, requirement)
 
         if dist is None and self.to_scan is not None:
+            print "aaa 6", dist
             self.prescan()
             dist = find(self, requirement)
 
         if dist is None and not force_scan:
+            print "aaa 7", dist
             self.find_packages(requirement)
             dist = find(self, requirement)
 
         if dist is None:
+            print "aaa 8", dist
             self.warn(
                 "No local packages or download links found for %s%s",
                 (source and "a source distribution of " or ""),
                 requirement,
             )
         else:
+            print "aaa 9", dist
             self.info("Best match: %s", dist)
             return dist.clone(location=self.download(dist.location, tmpdir))