Man pages matching name yaml::xs::libyaml in section 3pm:

YAML::XS::LibYAML.3pm.en	debian 10 / libyaml-libyaml-perl
YAML::XS::LibYAML.3pm.en	debian 11 / libyaml-libyaml-perl
YAML::XS::LibYAML.3pm.en	debian 12 / libyaml-libyaml-perl