Wishing for Rust support too. At the moment we are doing some batch processing stuff on AWS Lambda using Rust. We are wrapping the Rust binary in a Python script, which is fiddly and annoying.
if it's a "json" like data that is sent to you (i.e a structure made out of only primitive types and list/dict) it may be not that hard, but I think it will be a work with very few value outside of this very specific use case.
Go might be a better language to use as a shim executor than Javascript. Unless Lambda is doing something tricky to make NodeJS perform much better than normal when it comes to loading code
