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-rw-r--r--src/nix/main.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/nix/main.cc b/src/nix/main.cc
index 20d3ea5c2555..2005ec5f9a6d 100644
--- a/src/nix/main.cc
+++ b/src/nix/main.cc
@@ -16,6 +16,7 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
     {
         mkFlag('h', "help", "show usage information", [=]() {
             printHelp(programName, std::cout);
+            std::cout << "\nNote: this program is EXPERIMENTAL and subject to change.\n";
             throw Exit();
         });