3748: Implement Chalk's debug methods using TLS r=matklad a=flodiebold
Chalk now panics if we don't implement these methods and run with CHALK_DEBUG, so I thought I'd try to implement them 'properly'. Sadly, it seems impossible to do without transmuting lifetimes somewhere. The problem is that we need a `&dyn HirDatabase` to get names etc., which we can't just put into TLS. I thought I could just use `scoped-tls`, but that doesn't support references to unsized types. So I put the `&dyn` into another struct and put the reference to *that* into the TLS, but I have to transmute the lifetime to 'static for that to work. I think this is sound, but I still don't really want to do it this way...
Having names in the Chalk debug output is very nice, but maybe IDs will have to suffice 😞
Co-authored-by: Florian Diebold <florian.diebold@freiheit.com>
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