* gnu/packages/perl6.scm (perl6-tap-harness): Update to 0.3.5. [source]: Update URL. Reindent. [arguments]: Replace obsolete prove6 script with manual Raku invocation in 'check' phase. [home-page]: Update. [synopsis]: Replace mention of Perl with Raku. * gnu/packages/rakudo-build-system.scm (check): Replace obsolete prove6 script with manual Raku invocation. Signed-off-by: Efraim Flashner <efraim@flashner.co.il>