diff -rauN rubygems-3.3.23/lib/rubygems/commands/setup_command.rb rubygems-3.3.23-no-rdoc-patch/lib/rubygems/commands/setup_command.rb
--- rubygems-3.3.23/lib/rubygems/commands/setup_command.rb	2022-10-05 16:34:09.000000000 +0200
+++ rubygems-3.3.23-no-rdoc-patch/lib/rubygems/commands/setup_command.rb	2022-10-09 11:13:47.750021079 +0200
@@ -347,8 +347,8 @@
       generate_ri   = options[:document].include? "ri"
       generate_rdoc = options[:document].include? "rdoc"
 
-      rdoc = Gem::RDoc.new fake_spec, generate_rdoc, generate_ri
-      rdoc.generate
+#      rdoc = Gem::RDoc.new fake_spec, generate_rdoc, generate_ri
+#      rdoc.generate
 
       return true
     elsif @verbose