rails new

THOR_MERGE=vimdiff bundle exec rails new -d mysql --skip-action-mailbox
  --skip-action-text --skip-active-job --skip-active-storage
  --skip-action-cable --skip-hotwire --skip-jbuilder --skip-bootsnap
  --skip-bundle .

app/models/application_record.rb

@@ -0,0 +1,3 @@
+class ApplicationRecord < ActiveRecord::Base
+  primary_abstract_class
+end