diff --git a/default.nix b/default.nix
index 554459b..6cdc6f2 100644
--- a/default.nix
+++ b/default.nix
@@ -1,6 +1,6 @@
-self: super:
-with self;
-with self.lib;
+final: prev:
+with final;
+with final.lib;
 let
   mapAttrs = super.stdenv.lib.mapAttrs;
   flip = super.stdenv.lib.flip;
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..606a16c
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,5 @@
+{
+  outputs = { ... }: {
+    overlay = import ./default.nix;
+  };
+}