Agreed. I too found panda didn't successfully install, so I just switched from rakudo-star to rakudo, and I use zef. This package looks like it tries to build rakudo-star, panda doesn't, it installs what bits succeed, and quietly ignores those that don't.
I think the packager should work from rakudo, and call the rpm rakudo, unless they can fix the problems so panda gets built and installed.