treewide: reformat nixfmt-rfc-style

Reformat repository using new nixfmt-rfc-style.

nix-darwin/default.nix

@@ -1,29 +1,33 @@
-{ config, lib, pkgs, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
 
 let
 
   cfg = config.home-manager;
 
-in {
+in
+{
   imports = [ ../nixos/common.nix ];
 
   config = lib.mkMerge [
     { home-manager.extraSpecialArgs.darwinConfig = config; }
     (lib.mkIf (cfg.users != { }) {
-      system.activationScripts.postActivation.text = lib.concatStringsSep "\n"
-        (lib.mapAttrsToList (username: usercfg: ''
+      system.activationScripts.postActivation.text = lib.concatStringsSep "\n" (
+        lib.mapAttrsToList (username: usercfg: ''
           echo Activating home-manager configuration for ${usercfg.home.username}
-          sudo -u ${usercfg.home.username} --set-home ${
-            pkgs.writeShellScript "activation-${usercfg.home.username}" ''
-              ${lib.optionalString (cfg.backupFileExtension != null)
-              "export HOME_MANAGER_BACKUP_EXT=${
-                lib.escapeShellArg cfg.backupFileExtension
-              }"}
-              ${lib.optionalString cfg.verbose "export VERBOSE=1"}
-              exec ${usercfg.home.activationPackage}/activate
-            ''
-          }
-        '') cfg.users);
+          sudo -u ${usercfg.home.username} --set-home ${pkgs.writeShellScript "activation-${usercfg.home.username}" ''
+            ${lib.optionalString (
+              cfg.backupFileExtension != null
+            ) "export HOME_MANAGER_BACKUP_EXT=${lib.escapeShellArg cfg.backupFileExtension}"}
+            ${lib.optionalString cfg.verbose "export VERBOSE=1"}
+            exec ${usercfg.home.activationPackage}/activate
+          ''}
+        '') cfg.users
+      );
     })
   ];
 }