libical-parser-perl 1.21-3 (amd64 binary) in ubuntu mantic

 iCal::Parser is a Perl module that processes iCalendar (vCalendar 2.0) files
 as specified in RFC 2445 into a Perl data structure. It handles several key
 features, including recurrences, exclusions, event updates and nested data
 structures (attendees and valarms).