diff --git a/default.nix b/default.nix
index d65e507..0048e7b 100644
--- a/default.nix
+++ b/default.nix
@@ -1,6 +1,10 @@
-{ pkgs ? import (fetchTarball {
-    url = "https://github.com/xtruder/nixpkgs/archive/pkgs/k3s/init.tar.gz";
-}) {}, nixosPath ? toString <nixpkgs/nixos>, lib ? pkgs.lib }:
+let
+  fetch = import ./lib/compat.nix;
+in
+{ pkgs ? import (fetch "nixpkgs") { }
+, nixosPath ? toString (fetch "nixpkgs") + "/nixos"
+, lib ? pkgs.lib
+}:
 
 with lib;