Remove: the webdack gem

Gemfile

@@ -25,7 +25,6 @@ gem "sentry-ruby"
 gem "sentry-sidekiq"
 gem "simple_command"
 gem "tzinfo-data"
-gem "webdack-uuid_migration", "~> 1.4.0"
 
 # Reduces boot times through caching; required in config/boot.rb
 gem "bootsnap", ">= 1.1.0", require: false

Gemfile.lock

@@ -696,8 +696,6 @@ GEM
       addressable
       httpi (~> 3.0)
       nokogiri (>= 1.4.2)
-    webdack-uuid_migration (1.4.0)
-      activerecord (>= 4.0)
     webmock (3.19.1)
       addressable (>= 2.8.0)
       crack (>= 0.3.2)
@@ -809,7 +807,6 @@ DEPENDENCIES
   tzinfo-data
   vcr
   view_component
-  webdack-uuid_migration (~> 1.4.0)
   webmock
   webrick
 

db/migrate/20181018165537_old_migrations.rb

@@ -0,0 +1,17 @@
+class OldMigrations < ActiveRecord::Migration[5.2]
+  REQUIRED_VERSION = 20181018165537
+  def up
+    if ActiveRecord::Migrator.current_version < REQUIRED_VERSION
+      error_message = <<~OLDMIGRATIONERROR
+        Due to old migrations requiring gems we no longer use migrations
+        prior to this have been deleted, this will not affect production
+        environments, but will affect developers re-creating their local
+        databases.
+        We recommend using the newer `rails db:reset`, this will run drop,
+        create, schema:load, and seed.  If you need to run `rails db:migrate`
+        then you will need to run `rails db:schema:load` must be run first
+      OLDMIGRATIONERROR
+      raise StandardError, error_message unless Rails.env.production?
+    end
+  end
+end