Recipe package system.

recipe_engine/third_party/setuptools/site-patch.py

Index: recipe_engine/third_party/setuptools/site-patch.py
diff --git a/recipe_engine/third_party/setuptools/site-patch.py b/recipe_engine/third_party/setuptools/site-patch.py
new file mode 100644
index 0000000000000000000000000000000000000000..c2168019adbba1ac34099d9c858cc9ebf44c5df7
--- /dev/null
+++ b/recipe_engine/third_party/setuptools/site-patch.py
@@ -0,0 +1,76 @@
+def __boot():
+    import sys
+    import os
+    PYTHONPATH = os.environ.get('PYTHONPATH')
+    if PYTHONPATH is None or (sys.platform=='win32' and not PYTHONPATH):
+        PYTHONPATH = []
+    else:
+        PYTHONPATH = PYTHONPATH.split(os.pathsep)
+
+    pic = getattr(sys,'path_importer_cache',{})
+    stdpath = sys.path[len(PYTHONPATH):]
+    mydir = os.path.dirname(__file__)
+    #print "searching",stdpath,sys.path
+
+    for item in stdpath:
+        if item==mydir or not item:
+            continue    # skip if current dir. on Windows, or my own directory
+        importer = pic.get(item)
+        if importer is not None:
+            loader = importer.find_module('site')
+            if loader is not None:
+                # This should actually reload the current module
+                loader.load_module('site')
+                break
+        else:
+            try:
+                import imp # Avoid import loop in Python >= 3.3
+                stream, path, descr = imp.find_module('site',[item])
+            except ImportError:
+                continue
+            if stream is None:
+                continue
+            try:
+                # This should actually reload the current module
+                imp.load_module('site',stream,path,descr)
+            finally:
+                stream.close()
+            break
+    else:
+        raise ImportError("Couldn't find the real 'site' module")
+
+    #print "loaded", __file__
+
+    known_paths = dict([(makepath(item)[1],1) for item in sys.path]) # 2.2 comp
+
+    oldpos = getattr(sys,'__egginsert',0)   # save old insertion position
+    sys.__egginsert = 0                     # and reset the current one
+
+    for item in PYTHONPATH:
+        addsitedir(item)
+
+    sys.__egginsert += oldpos           # restore effective old position
+
+    d, nd = makepath(stdpath[0])
+    insert_at = None
+    new_path = []
+
+    for item in sys.path:
+        p, np = makepath(item)
+
+        if np==nd and insert_at is None:
+            # We've hit the first 'system' path entry, so added entries go here
+            insert_at = len(new_path)
+
+        if np in known_paths or insert_at is None:
+            new_path.append(item)
+        else:
+            # new path after the insert point, back-insert it
+            new_path.insert(insert_at, item)
+            insert_at += 1
+
+    sys.path[:] = new_path
+
+if __name__=='site':
+    __boot()
+    del __boot