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+#nix #keyword
+
+---
+Recursive attribute sets can reference values declared earlier in the same set.
+keyword: `rec`
+```nix
+rec {
+ one = 1;
+ two = one + 1;
+}
+```
+
+Ordering does not matter:
+```nix
+nix-repl> rec { two = one + 1; one = 1; }
+{
+ one = 1;
+ two = 2;
+}
+```