Fix python env issues.

PythonHome/Lib/site-packages/pip/runner.py

@@ -0,0 +1,18 @@
+import sys
+import os
+
+
+def run():
+    base = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+    ## FIXME: this is kind of crude; if we could create a fake pip
+    ## module, then exec into it and update pip.__path__ properly, we
+    ## wouldn't have to update sys.path:
+    sys.path.insert(0, base)
+    import pip
+    return pip.main()
+
+
+if __name__ == '__main__':
+    exit = run()
+    if exit:
+        sys.exit(exit)