diff --git a/default.nix b/default.nix
index dde42bb..79d725f 100644
--- a/default.nix
+++ b/default.nix
@@ -142,6 +142,7 @@ let
       eachDefaultSystem
       eachSystem
       flattenTree
+      filterPackages
       mkApp
       simpleFlake
       ;
diff --git a/filterPackages.nix b/filterPackages.nix
index f3d7147..a4eac53 100644
--- a/filterPackages.nix
+++ b/filterPackages.nix
@@ -1,7 +1,7 @@
 system: packages:
 let
   # Adopted from nixpkgs.lib
-  inherit (builtins) listToAttrs concatMap attrName;
+  inherit (builtins) listToAttrs concatMap attrNames;
   nameValuePair = name: value: { inherit name value; };
   filterAttrs = pred: set:
     listToAttrs (