diff --git a/flake.nix b/flake.nix
index 59108a1..6a53a2e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -16,10 +16,11 @@
   outputs = inputs @ { self, nixpkgs, impermanence, agenix, ... }:
     let
       inputs.secrets = ./secrets;
+      inputs.persist-dir = "/nix/persist";
       defaults = {
         config = {
           environment.persistence = {
-            "/nix/persist" = {
+            "${inputs.persist-dir}" = {
               hideMounts = true;
               directories = [
                 "/var/lib"