diff --git a/krebs/5pkgs/default.nix b/krebs/5pkgs/default.nix
index 53fc4de44..f2bbaf7f4 100644
--- a/krebs/5pkgs/default.nix
+++ b/krebs/5pkgs/default.nix
@@ -20,6 +20,8 @@ with config.krebs.lib;
               (filterAttrs (_: dir.has-default-nix)
                            (subdirsOf ./.))
   // {
+    empty = pkgs.runCommand "empty-1.0.0" {} "mkdir $out";
+
     haskellPackages = pkgs.haskellPackages.override {
       overrides = self: super:
         mapAttrs (name: path: self.callPackage path {})