libparse-yapp-perl 1.21-2 (arm64 binary) in ubuntu focal

 This is a collection of modules that let you generate and use yacc
 like thread safe (reentrant) parsers with perl object oriented
 interface.
 .
 The script yapp is a front-end to the Parse::Yapp module and let you
 easily create a Perl OO parser from an input grammar file.