Why should this be included in the repository?
One of most beautiful programming languages. The successor of Perl. Already in stable version, ready for production.
Is it Open Source (yes/no)
Who and how many users do you anticipate will use this software?
Link to source tarball/zip file
Actually I worked a little bit to make it compile with solbuild. Maybe you can review my files. Perl6 software have to be built using moar virtual machine and nqp (Not Quite Perl) intermediate Perl implementation. The latest package calls Rakudo which includes previous both and build all into perl6 interpreter.