feat: update system

modules/home-manager/programs/nixvim/presets/languages/nix.nix

@@ -15,6 +15,10 @@ in
   config = lib.mkIf cfg.enable {
     plugins = {
       conform-nvim.settings.formatters_by_ft.nix = [ "nixfmt" ];
+      none-ls = {
+        enable = true;
+        sources.diagnostics.statix.enable = true;
+      };
       lsp.servers.nil_ls.enable = true;
       nix.enable = true;
     };