use rustc_version::{version_meta, Channel};
fn main() {
// HACK: Ideally we would test for features instead of release channel.
let nightly = version_meta().unwrap().channel == Channel::Nightly;
if nightly {
println!("cargo:rustc-cfg=has_generic_const_exprs");
println!("cargo:rustc-cfg=has_cfg_doc");
println!("cargo:rustc-cfg=has_core_intrinsics");
}
println!("cargo:rerun-if-changed=build.rs");
}