1 files changed, 9 insertions, 0 deletions
diff --git a/src/libutil/compression.hh b/src/libutil/compression.hh
new file mode 100644
index 000000000000..962ce5ac7767
--- /dev/null
+++ b/src/libutil/compression.hh
@@ -0,0 +1,9 @@
+#pragma once
+
+#include <string>
+
+namespace nix {
+
+std::string decompressXZ(const std::string & in);
+
+}