To my mind, the blockers for Perl 6 adoption in order of importance have been: 1. The name, saddling it with the legacy of Perl. (I say this as someone who really liked working with Perl back in the waning years of the old millennium, and believes that Perl was visionary in pointing the way to the state of modern programming... but also that it had some limitations that have only become more glaring over the years.)…
SBCL is not Common Lisp. ChickenScheme is not Scheme, nor is guile Scheme. GCC is not C. V8 is not JavaScript. Neither is SpiderMonkey. clang is also not C. tcc is not C. Visual C++ is not C or C++. Delphi is not Object Pascal. Pypy is not Python, nor is Jython, nor is Stackless Python, nor is IronPython. JRuby is not Ruby. yasm and fasm are not x86 assembly or x86_64 assembly or ARM assembly. I'm seeing a pattern of…
When I ask "What's an implementation of Perl6" The answer is "Nothing implements perl 6, isn't that wonderful!" It used to take forever diving around to find something that could run some subset of perl 6, usually with the disclaimer of "This isn't really perl 6, but rather a language that seems like perl 6" And you'd get the same thing from the mailing lists/etc.