To get proper macros.

A let that defines variables that have a lifetime beyond the scope of the expression? Yeah, that's really unusual. And it's not even the oddest looking thing from the first example block of code.

>Rust semantics with LISP syntax. A transparent s-expression frontend that compiles directly to Rust — no runtime, no GC

The first paragraph says literally that.

Yeah, it sort of reminds me of the microcode assembly of a few of the lisp machines, that, while in s-expressions were also clearly not lisp themselves. But could be an interesting target for some lisp macros.

Thanks LLM.

It's completely nonsensical too. Why would a parser for an alternative syntax introduce a GC?!

It's a vibecoded parser...

If you already have the ability to express the grammar productions in Rust that allow for optionally-specified types (e.g. variable declaration), then you have the ability to express lifetimes and the turbofish (which is just a curious way to call a generic function with a specific type parameter). The only weird thing would be that Lisp uses the apostrophe character for something very different than Rust, but you could just pick any other way to denote lifetimes.

so you can do the transformations (see the rlisp macro section)