libyaml-libyaml-perl 0.80+repack-2 (amd64 binary) in ubuntu focal

 YAML::LibYAML (or YAML::XS) is a Perl interface to Kirill Siminov's libyaml
 library, a YAML Ain't Markup Language (YAML) implementation written in C to
 support the YAML 1.1 specification. The provided Dump and Load routines
 are compatible with the Perl YAML module (see libyaml-perl).