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-rw-r--r--third_party/nix/src/libexpr/attr-set.hh3
1 files changed, 3 insertions, 0 deletions
diff --git a/third_party/nix/src/libexpr/attr-set.hh b/third_party/nix/src/libexpr/attr-set.hh
index 551cddaae4eb..39af7c482eab 100644
--- a/third_party/nix/src/libexpr/attr-set.hh
+++ b/third_party/nix/src/libexpr/attr-set.hh
@@ -50,6 +50,9 @@ class Bindings {
   iterator begin();
   iterator end();
 
+  // Merge values from other into the current attribute
+  void merge(Bindings* other);
+
   // ???
   [[deprecated]] void sort();