diff --git a/default.nix b/default.nix
index 0dc652d..87bf978 100644
--- a/default.nix
+++ b/default.nix
@@ -225,6 +225,12 @@ in
         };
         nix = {
           command = "${pkgs.nil}/bin/nil";
+          formatting.command = "${pkgs.nixpkgs-fmt}/bin/nixpkgs-fmt";
+          flake = {
+            autoArchive = true;
+            autoEvalInputs = true;
+          };
+          maxMemoryMB= 1024 * 4;
           rootPatterns = [ "flake.nix" ];
           filetypes = [ "nix" ];
         };