rakudo: 2017.01 -> 2020.01

dependencies:
- moarvm: init at 2020.01.1
- nqp: init at 2020.01
- zef: init 0.8.2

Replaced the rakudo-star distribution with packages for raku, moarvm, nqp and
zef.

pkgs/development/interpreters/rakudo/moarvm.nix

@@ -0,0 +1,25 @@
+{ stdenv, fetchurl, perl
+, CoreServices, ApplicationServices }:
+
+stdenv.mkDerivation rec {
+  pname = "moarvm";
+  version = "2020.01.1";
+
+  src = fetchurl {
+    url    = "https://github.com/MoarVM/MoarVM/releases/download/${version}/MoarVM-${version}.tar.gz";
+    sha256 = "11rmlps6r3nqa9m2yyv9i2imahirsqmxbfay71f3gs4ql121xdnw";
+  };
+
+  buildInputs = [ perl ] ++ stdenv.lib.optionals stdenv.isDarwin [ CoreServices ApplicationServices ];
+  doCheck = false; # MoarVM does not come with its own test suite
+
+  configureScript = "${perl}/bin/perl ./Configure.pl";
+
+  meta = with stdenv.lib; {
+    description = "VM with adaptive optimization and JIT compilation, built for Rakudo";
+    homepage    = "https://github.com/MoarVM/MoarVM";
+    license     = licenses.artistic2;
+    platforms   = platforms.unix;
+    maintainers = with maintainers; [ thoughtpolice vrthra sgo ];
+  };
+}