No. "Z raku" would mean that "raku" accompanies you and the play on words would ...

wodny on Oct 13, 2019 | parent | context | favorite | on: Larry Wall has approved renaming Perl 6 to Raku

No. "Z raku" would mean that "raku" accompanies you and the play on words would be gone because it would be either "programuje z raku" ("one is accompanied by raku the programming language") or "programuje z rakiem" ("codes having/with cancer").