diff --git a/lib.nix b/lib.nix
index 595a8da..2895f1e 100644
--- a/lib.nix
+++ b/lib.nix
@@ -13,6 +13,7 @@
 }:
 let
   inherit (nixpkgs) lib;
+  defaultNixpkgs = nixpkgs;
 
   self = rec {
     inherit
@@ -51,6 +52,7 @@ let
         nixpkgsConfig ? { },
         nixpkgsHostPlatform ? null,
         user ? defaultUser,
+        nixpkgs ? defaultNixpkgs,
       }:
       let
         hostSystemConfig = "${hostsFolder}/${host}/nixos.nix";