diff --git a/flake.nix b/flake.nix
index 2bcbe5f..79fa6e9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -35,6 +35,10 @@
         packages.default = scope.${package};
         defaultPackage = scope.${package};
 
+        passthru = {
+          shellPath = "/bin/msh";
+        };
+
         devShells.default = let
           devPackages = builtins.attrValues
             (pkgs.lib.getAttrs (builtins.attrNames devPackagesQuery) scope);