Fix entry_points

pre_commit/entry_points.py

@@ -0,0 +1,23 @@
+
+import functools
+
+import pre_commit.clientlib.validate_manifest
+import pre_commit.run
+
+
+def make_entry_point(entry_point_func):
+    """Decorator which turns a function which takes sys.argv[1:] and returns
+    an integer into an argumentless function which returns an integer.
+
+    Args:
+        entry_point_func - A function which takes an array representing argv
+    """
+    @functools.wraps(entry_point_func)
+    def func():
+        import sys
+        return entry_point_func(sys.argv[1:])
+    return func
+
+
+pre_commit_func = make_entry_point(pre_commit.run.run)
+validate_manifest_func = make_entry_point(pre_commit.clientlib.validate_manifest.run)