@@ -6,20 +6,17 @@ enable = true;
     enableSocketListener = true;
   };
   nix = {
-    buildCores = lib.mkDefault 0;
-    daemonIONice = true;
-    daemonNiceLevel = 10;
+    settings.cores = lib.mkDefault 0;
+    daemonIOLowPriority = true;
     gc = {
       automatic = true;
       user = "alan";
       options = "--max-freed $((25 * 1024**3 - 1024 * $(df -P -k /nix/store | tail -n 1 | awk '{ print $4 }')))";
     };
-    extraOptions = ''
-      system = x86_64-darwin
-      extra-platforms = x64_64-darwin aarch64-darwin
-    '';
+    settings.extra-platforms = "x86_64-darwin aarch64-darwin";
   };
 
+  nixpkgs.system = "x86_64-darwin";
   nixpkgs.config = {
     allowUnfree = true;
   };