diff --git a/default.nix b/default.nix
index 8af7f78..2b42933 100644
--- a/default.nix
+++ b/default.nix
@@ -5,6 +5,7 @@
 let
 
   packages = { config, lib, pkgs, ... }: {
+    _file = ./default.nix;
     config = {
       _module.args.pkgs = import nixpkgs config.nixpkgs;
       nixpkgs.system = system;