From @lizmat

<lizmat> m​: my %h{Str(Cool)} = a => 42 # we actually don't appear to support coercive typed object hashes
<+camelia> rakudo-moar 4facf1​: OUTPUT​: «Type check failed in binding to parameter 'key'; expected Str(Cool) but got Str ("a")␤ in block <unit> at <tmp> line 1␤␤»
<timotimo> oh, huh
<timotimo> that is certainly strange
<lizmat> I'll rakudobug it so it won't fall through the cracks

https://irclog.perlgeek.de/perl6-dev/2017-04-05#i_14378922

This seems to work now.

$ ./rakudo-m -e 'my %h{Str(Cool)} = a => 42; say %h<a>'
42
$ ./rakudo-m -e 'my %h{Int(Str)} = "10" => 42; say %h.keys[0].^name'
Int

Tagging as testneeded.

According to bisectable6 (https://colabti.org/irclogger/irclogger_log/raku-dev?date=2023-10-21#l50) this seems to work since rakudo/rakudo@f2d73287f9.

Test added with Raku/roast@1f824745f2.

Closing as "resolved".