[follower]

Are you able to provide a barebones specific code example (either in C/C++ or Rust) of the issue(s) you're describing (e.g. nesting/chaining) where Rust conditional compilation is limiting?

A specific example is likely to lead to a more educational discussion in terms of learning about a solution to issues that you've observed or highlighting currently unsolved issues with Rust's implementation.

Either of which would be valuable.