# gem -v /usr/lib/ruby/yaml.rb:56:in `<top (required)>': It seems your ruby installation is missing psych (for YAML output). To eliminate this warning, please install libyaml and reinstall your ruby. 1.8.23 Помогает BuildRequires: libyaml-devel
ruby-1.9.3-alt13 -> sisyphus: * Sun Feb 10 2013 Led <led@altlinux> 1.9.3-alt13 - fixed BuildRequires (ALT#28533)