https://docs.rs/lv2/latest/lv2/
https://docs.rs/vst/latest/vst/
And for Rasp Pi or Bela, Glicol can also help. Although these are all work in progress, I personally really enjoy coding in Rust and the package management is fantastic.
However, VCVRack seems to be a different story; Faust may be a better option:
https://faustdoc.grame.fr/workshops/2020-11-21-faust-vcvrack...