I've finally set my mind to properly learning a new language after Python, Haskell, and typescript. I'm looking into Rust especially because of how I've heard it interoperates with Python (and also because it's maybe being used in the Linux kernel? Is that correct?).
Rust is an excellent follow up to those languages. It's got many influences from Haskell, but is designed to solve for a very different task that's not yet in your repertoire so you'll learn a ton.
Not sure what you mean by "userland" drivers here, but support for kernel modules written in rust is actively being developed. It's already being used for kernel drivers like the Asahi Linux GPU driver for M1 Macs.
But you can write userspace drivers in any language, as long as that language has basic file I/O and mmap() support. There's nothing special about using Rust for userspace drivers.
