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-rw-r--r--src/libstore/store-api.cc6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/libstore/store-api.cc b/src/libstore/store-api.cc
index 9e8bc36d7f0d..f1e7c35620ad 100644
--- a/src/libstore/store-api.cc
+++ b/src/libstore/store-api.cc
@@ -6,6 +6,12 @@
 namespace nix {
 
 
+bool StoreAPI::hasSubstitutes(const Path & path)
+{
+    return !querySubstitutes(path).empty();
+}
+
+
 bool isInStore(const Path & path)
 {
     return path[0] == '/'