1 files changed, 4 insertions, 1 deletions
diff --git a/src/engine/SCons/Node/__init__.py b/src/engine/SCons/Node/__init__.py
index 0a64586..326aee3 100644
--- a/src/engine/SCons/Node/__init__.py
+++ b/src/engine/SCons/Node/__init__.py
@@ -208,7 +208,7 @@ class Node:
     def builder_set(self, builder):
         self.builder = builder
 
-    def has_builder(self, fetch = 1):
+    def has_builder(self):
         """Return whether this Node has a builder or not.
 
         In Boolean tests, this turns out to be a *lot* more efficient
@@ -228,6 +228,9 @@ class Node:
             b = self.builder
         return not b is None
 
+    def is_derived(self):
+        return self.has_builder() or self.side_effect
+
     def builder_sig_adapter(self):
         """Create an adapter for calculating a builder's signature.