Prepare for D v2.112

[kinke]

No description provided.

[adamdruppe]

That doesn't look correct, AA keys are supposed to be immutable.

[kinke]

string isn't immutable per se either. We index it with const(char)[], and the implicit cast isn't done with D v2.112 and the templated AA implementation anymore.

[adamdruppe]

Do you know if the AA impl deep copies the key? I kinda recall it didn't which is why the keys were supposed to be immutable but maybe for strings it does anyway. It still needs it for disambiguating hash collisions.

[kinke]

Oh I see what you meant now - no I don't know if it deep-copies, but I'd expect it not to, without special-case for strings. Maybe the new lowering should still accept 'compatible' keys (like const(char)[] here for the string index type) for read-indexing...

[adamdruppe]

since we are string compatible here obviously the change itself is harmless, so we can merge, just i maintain it is a compiler regression here.

[kinke]

Turns out we actually have strings already, no need for the const(char)[].

The CI problems should be fixed wrt. missing mongo tools (removed from GHA runner images); the gridfs tests fail.

[kinke]

@adamdruppe: Okay to merge (and tag)?

[adamdruppe]

ok tagged 0.0.15