diff --git a/default.nix b/default.nix
index a1da823..a43ab6f 100644
--- a/default.nix
+++ b/default.nix
@@ -61,4 +61,9 @@ in
     {
       shellHook = project.config.installationScript;
     };
+
+  lib = rec {
+    expr = repr: "\${{ ${repr} }}";
+    secret = name: expr "secrets.${name}";
+  };
 }