diff --git a/src/nix-instantiate/nix-instantiate.cc b/src/nix-instantiate/nix-instantiate.cc index 762b52ae1d..afd16b3a52 100644 --- a/src/nix-instantiate/nix-instantiate.cc +++ b/src/nix-instantiate/nix-instantiate.cc @@ -139,6 +139,8 @@ void run(Strings args) strict = true; else if (arg == "--repair") state.repair = true; + else if (arg == "--dry-run") + settings.readOnlyMode = true; else if (arg[0] == '-') throw UsageError(format("unknown flag `%1%'") % arg); else