Regarding the issue with boost maybe this is related to this?

We had to update some paths in solc-rust to get static linking of boost to work.

   println!("cargo:rustc-link-search=native=/usr/lib/");
    println!("cargo:rustc-link-search=native=/usr/lib/x86_64-linux-gnu/");
    println!("cargo:rustc-link-search=native=/usr/local/lib/");

    println!("cargo:rustc-link-lib=static=boost_system");
    println!("cargo:rustc-link-lib=static=boost_filesystem");
    println!("cargo:rustc-link-lib=static=boost_regex")

But as you see these paths are all tailored to Mac and Linux so maybe we have to add paths for Windows here, too? You can create a local fork of solc-rust and then check if any changes here might be working.

Btw, I see all your commits and attempts to get it running, I just want to express how happy I am that you are helping us with that 🙏