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+R"(
+
+**Store URL format**: `dummy://`
+
+This store type represents a store that contains no store paths and
+cannot be written to. It's useful when you want to use the Nix
+evaluator when no actual Nix store exists, e.g.
+
+```console
+# nix eval --store dummy:// --expr '1 + 2'
+```
+
+)"