This works now. I've added a simple test to S02-names/pseudo.t with roast
commit 7edf26aae4.
$ ./perl6-j -e 'say CORE::.keys'
(SoftRoutine PF_LOCAL &METAOP_REDUCE_XOR &exit Rat Rational Slang &sqrt buf8
$?COMPILATION-ID &nextcallee &infix:<∘> &kv NQPMatchRole &any &sleep-until
SIGTRAP &join &METAOP_TEST_ASSIGN:<or> &trait_mod:<is> &lc &infix:<...>
NumericEnumeration &prefix:<temp> &exp &infix:<~|> &uniprops Method &slip
&RETURN-LIST Promise &infix:<≼> &SUPPLY &infix:<max> &roots &infix:<(cont)>
FileChangeEvent Seq &prefix:<?^> &tanh &infix:<==> &nodemap &infix:<~^>
&infix:«>» Set &unshift PseudoStash &infix:<∖> &term:<time> &EVALFILE
&METAOP_TEST_ASSIGN:<andthen> X &infix:<…> &POSITIONS &infix:<&> SIGCONT
Metamodel &infix:<cmp> &infix:<~~> &infix:<^^> &lines Enumeration
ProtocolFamily &INDIRECT_NAME_LOOKUP &mix e %DEPRECATIONS i &chop Grammar
Planned &prefix:<+> &asinh $RAKUDO-VERBOSE-STACKFRAME CX &sum Parameter &pop
&hash $! &min &wordcase &REQUIRE_IMPORT &infix:<o> Distro &SLICE_MORE_LIST
&infix:<-> &callframe &sort &circumfix:<:{ }> $/ !CORE_MARKER SIGTTIN Stash
&one &ords Regex Versio
n &GENERATE-ROLE-FROM-VALUE List ...)
I'm closing this ticket as 'resolved'.