added formatter + reformat existing codebase (#175)

wrappers/nixos.nix

@@ -1,31 +1,36 @@
-modules:
-{ pkgs, config, lib, ... }@args:
-
-let
+modules: {
+  pkgs,
+  config,
+  lib,
+  ...
+} @ args: let
   inherit (lib) mkEnableOption mkOption mkOptionType mkMerge mkIf types;
   shared = import ./_shared.nix args;
   cfg = config.programs.nixvim;
-in
-{
+in {
   options = {
     programs.nixvim = mkOption {
-      type = types.submodule ((modules pkgs) ++ [{
-        options.enable = mkEnableOption "nixvim";
-      }]);
+      type = types.submodule ((modules pkgs)
+        ++ [
+          {
+            options.enable = mkEnableOption "nixvim";
+          }
+        ]);
     };
     nixvim.helpers = shared.helpers;
   };
 
-  config = mkIf cfg.enable
+  config =
+    mkIf cfg.enable
     (mkMerge [
-      { environment.systemPackages = [ cfg.finalPackage ]; }
+      {environment.systemPackages = [cfg.finalPackage];}
       (mkIf (!cfg.wrapRc) {
         environment.etc."nvim/sysinit.lua".text = cfg.initContent;
         environment.variables."VIM" = "/etc/nvim";
       })
-      ({
+      {
         warnings = cfg.warnings;
         assertions = cfg.assertions;
-      })
+      }
     ]);
 }