/usr/lib/ruby/ is in ruby-hamlit 2.7.5-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/hamlit/
/usr/lib/ruby/vendor_ruby/hamlit/attribute_builder.rb
/usr/lib/ruby/vendor_ruby/hamlit/attribute_compiler.rb
/usr/lib/ruby/vendor_ruby/hamlit/attribute_parser.rb
/usr/lib/ruby/vendor_ruby/hamlit/cli.rb
/usr/lib/ruby/vendor_ruby/hamlit/compiler/
/usr/lib/ruby/vendor_ruby/hamlit/compiler/children_compiler.rb
/usr/lib/ruby/vendor_ruby/hamlit/compiler/comment_compiler.rb
/usr/lib/ruby/vendor_ruby/hamlit/compiler/doctype_compiler.rb
/usr/lib/ruby/vendor_ruby/hamlit/compiler/script_compiler.rb
/usr/lib/ruby/vendor_ruby/hamlit/compiler/silent_script_compiler.rb
/usr/lib/ruby/vendor_ruby/hamlit/compiler/tag_compiler.rb
/usr/lib/ruby/vendor_ruby/hamlit/compiler.rb
/usr/lib/ruby/vendor_ruby/hamlit/engine.rb
/usr/lib/ruby/vendor_ruby/hamlit/error.rb
/usr/lib/ruby/vendor_ruby/hamlit/escapable.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/
/usr/lib/ruby/vendor_ruby/hamlit/filters/base.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/cdata.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/coffee.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/css.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/erb.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/escaped.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/javascript.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/less.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/markdown.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/plain.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/preserve.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/ruby.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/sass.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/scss.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/text_base.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters/tilt_base.rb
/usr/lib/ruby/vendor_ruby/hamlit/filters.rb
/usr/lib/ruby/vendor_ruby/hamlit/force_escapable.rb
/usr/lib/ruby/vendor_ruby/hamlit/helpers.rb
/usr/lib/ruby/vendor_ruby/hamlit/html.rb
/usr/lib/ruby/vendor_ruby/hamlit/identity.rb
/usr/lib/ruby/vendor_ruby/hamlit/object_ref.rb
/usr/lib/ruby/vendor_ruby/hamlit/parser/
/usr/lib/ruby/vendor_ruby/hamlit/parser/MIT-LICENSE
/usr/lib/ruby/vendor_ruby/hamlit/parser/README.md
/usr/lib/ruby/vendor_ruby/hamlit/parser/haml_buffer.rb
/usr/lib/ruby/vendor_ruby/hamlit/parser/haml_compiler.rb
/usr/lib/ruby/vendor_ruby/hamlit/parser/haml_error.rb
/usr/lib/ruby/vendor_ruby/hamlit/parser/haml_helpers.rb
/usr/lib/ruby/vendor_ruby/hamlit/parser/haml_options.rb
/usr/lib/ruby/vendor_ruby/hamlit/parser/haml_parser.rb
/usr/lib/ruby/vendor_ruby/hamlit/parser/haml_util.rb
/usr/lib/ruby/vendor_ruby/hamlit/parser/haml_xss_mods.rb
/usr/lib/ruby/vendor_ruby/hamlit/parser.rb
/usr/lib/ruby/vendor_ruby/hamlit/rails_helpers.rb
/usr/lib/ruby/vendor_ruby/hamlit/rails_template.rb
/usr/lib/ruby/vendor_ruby/hamlit/railtie.rb
/usr/lib/ruby/vendor_ruby/hamlit/ruby_expression.rb
/usr/lib/ruby/vendor_ruby/hamlit/static_analyzer.rb
/usr/lib/ruby/vendor_ruby/hamlit/string_splitter.rb
/usr/lib/ruby/vendor_ruby/hamlit/template.rb
/usr/lib/ruby/vendor_ruby/hamlit/utils.rb
/usr/lib/ruby/vendor_ruby/hamlit/version.rb
/usr/lib/ruby/vendor_ruby/hamlit.rb