diff --git a/nix/overlays/by-name/agenix/overlay.nix b/nix/overlays/by-name/agenix/overlay.nix
new file mode 100644
index 00000000..c517561a
--- /dev/null
+++ b/nix/overlays/by-name/agenix/overlay.nix
@@ -0,0 +1,5 @@
+{sources}:
+#
+final: prev: {
+  inherit (final.callPackage sources.agenix {}) agenix;
+}
diff --git a/nix/overlays/top-level.nix b/nix/overlays/top-level.nix
index 844bf4eb..2651568d 100644
--- a/nix/overlays/top-level.nix
+++ b/nix/overlays/top-level.nix
@@ -4,8 +4,6 @@ let
 in
   lib.composeManyExtensions [
     (final: _: {
-      inherit (final.callPackage sources.agenix {}) agenix;
-
       disko =
         final.callPackage (sources.disko + "/package.nix")
         {diskoVersion = sources.disko.version;};