diff --git a/modules/darwin/system.nix b/modules/darwin/system.nix
new file mode 100644
index 0000000..6cc526f
--- /dev/null
+++ b/modules/darwin/system.nix
@@ -0,0 +1,8 @@
+{delib, ...}:
+delib.module {
+  name = "darwin.system";
+
+  darwin.always = {
+    system.primaryUser = "ovy";
+  };
+}