THC is a Turbo Haskell compiler that compiles GHC Core to the JVM using Truffle and GraalVM, supporting JIT and AOT compilation with polyglot FFI to Python, Ruby, R, and JavaScript. It implements all GHC 9.14.1 primitives, handles advanced features like Template Haskell and Linear Haskell, and can compile programs including pandoc, happy, alex, and GHC itself.