require propshaft

railties/lib/rails/commands/app/update_command.rb

@@ -79,14 +79,7 @@ def generator_options
           end
 
           def asset_pipeline
-            case
-            when defined?(Sprockets::Railtie)
-              "sprockets"
-            when defined?(Propshaft::Railtie)
-              "propshaft"
-            else
-              nil
-            end
+            "propshaft" if defined?(Propshaft::Railtie)
           end
 
           def skip_gem?(gem_name)

railties/test/isolation/abstract_unit.rb

@@ -604,7 +604,7 @@ def self.sh(cmd)
   FileUtils.rm_rf(app_template_path)
   FileUtils.mkdir_p(app_template_path)
 
-  sh "#{Gem.ruby} #{RAILS_FRAMEWORK_ROOT}/railties/exe/rails new #{app_template_path} --asset-pipeline=sprockets --skip-bundle --no-rc --quiet"
+  sh "#{Gem.ruby} #{RAILS_FRAMEWORK_ROOT}/railties/exe/rails new #{app_template_path} --skip-bundle --no-rc --quiet"
   File.open("#{app_template_path}/config/boot.rb", "w") do |f|
     f.puts 'require "bootsnap/setup" if ENV["BOOTSNAP_CACHE_DIR"]'
     f.puts 'require "rails/all"'
@@ -623,7 +623,7 @@ def self.sh(cmd)
   # Fake 'Bundler.require' -- we run using the repo's Gemfile, not an
   # app-specific one: we don't want to require every gem that lists.
   contents = File.read("#{app_template_path}/config/application.rb")
-  contents.sub!(/^Bundler\.require.*/, "%w(sprockets/railtie importmap-rails).each { |r| require r }")
+  contents.sub!(/^Bundler\.require.*/, "%w(propshaft propshaft/railtie importmap-rails).each { |r| require r }")
   File.write("#{app_template_path}/config/application.rb", contents)
 
   require "rails"
@@ -638,7 +638,6 @@ def self.sh(cmd)
   require "action_cable"
   require "action_mailbox"
   require "action_text"
-  require "sprockets"
 
   require "action_view/helpers"
   require "action_dispatch/routing/route_set"