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-rw-r--r--src/libstore/nar-accessor.hh11
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diff --git a/src/libstore/nar-accessor.hh b/src/libstore/nar-accessor.hh
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+++ b/src/libstore/nar-accessor.hh
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+#pragma once
+
+#include "fs-accessor.hh"
+
+namespace nix {
+
+/* Return an object that provides access to the contents of a NAR
+   file. */
+ref<FSAccessor> makeNarAccessor(ref<const std::string> nar);
+
+}