use std::env;
fn main() {
// Set the `ruma_unstable_exhaustive_types` configuration from an environment variable.
if env::var("RUMA_UNSTABLE_EXHAUSTIVE_TYPES").is_ok() {
println!("cargo:rustc-cfg=ruma_unstable_exhaustive_types");
}
println!("cargo:rerun-if-env-changed=RUMA_UNSTABLE_EXHAUSTIVE_TYPES");
}