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-rw-r--r--src/libutil/archive.hh3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/libutil/archive.hh b/src/libutil/archive.hh
index 8a15e849c7b8..7a0e688e4201 100644
--- a/src/libutil/archive.hh
+++ b/src/libutil/archive.hh
@@ -74,6 +74,9 @@ void parseDump(ParseSink & sink, Source & source);
 
 void restorePath(const Path & path, Source & source);
 
+/* Read a NAR from 'source' and write it to 'sink'. */
+void copyNAR(Source & source, Sink & sink);
+
 
 // FIXME: global variables are bad m'kay.
 extern bool useCaseHack;