Perhaps someone already mentioned it here, but GraalVM lets you interop between Java and anything LLVM, and therefore Rust, without the JVM startup cost, with b

Perhaps someone already mentioned it here, but GraalVM lets you interop between Java and anything LLVM, and therefore Rust, without the JVM startup cost, with breakpoints across languages, even (as I understand it). Compile time is long, though. borkdude has been releasing for some very cool stuff using this stuff. Here's a Clojure/Rust combo: https://github.com/borkdude/clojure-rust-graalvm https://github.com/borkdude/clojure-rust-graalvm