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-rw-r--r--src/libstore/parsed-derivations.cc5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/libstore/parsed-derivations.cc b/src/libstore/parsed-derivations.cc
index 17fde00a0167..87be8a24ead6 100644
--- a/src/libstore/parsed-derivations.cc
+++ b/src/libstore/parsed-derivations.cc
@@ -108,4 +108,9 @@ bool ParsedDerivation::willBuildLocally() const
     return getBoolAttr("preferLocalBuild") && canBuildLocally();
 }
 
+bool ParsedDerivation::substitutesAllowed() const
+{
+    return getBoolAttr("allowSubstitutes", true);
+}
+
 }