gerbil VS schemepunk

That's a strange one! Can you go to https://github.com/mighty-gerbils/gerbil/issues and post an issue outlining this with slightly more detail? What platform, C compiler, libc version etc.

New in std library: an S3 client, an SMTP client, SSL for Postgres (enables Heroku support), better CLI support (including multicall binaries), and plenty of module updates. Plus a few minor bug fixes.

See Gerbil Scheme homepage https://cons.io

Here is the discussion: https://github.com/mighty-gerbils/gerbil/discussions/1008

Gerbil Scheme < https://cons.io > just saw its release v0.18, with many usability and documentation upgrades, and a bunch of new functionality in the standard library. A "meta-dialect of Scheme with post-modern features", Gerbil layers a Racket-like module system (the best in the world by far) on top of Gambit Scheme (compiler that produces the fastest code), with lots of libraries as "batteries included" for production-level client/server code.

I'm more into Scheme than CL, but am aware of Coalton. My current lisp is Gerbil: https://cons.io which already has a type annotation system and will be enhancing it for the next major release (v19).

Another "post-modern" natively compiling Scheme is Gerbil Scheme [0]. It's seeing a lot of attention/enhancements lately, including some bounties to implement features.

[0]: https://cons.io

Shameless plug: I'm working on Schemepunk, a compatibility-focused alternate standard library for Scheme. It's an easy way to try a project in one Scheme, then move to another if you don't like it, without having to change much.