fn main() {
let is_nightly = version_check::is_feature_flaggable() == Some(true);
let is_at_least_1_49 = version_check::is_min_version("1.49.0").unwrap_or(false);
let is_at_least_1_51 = version_check::is_min_version("1.51.0").unwrap_or(false);
if !is_at_least_1_49 {
println!("cargo:warning=slotmap requires rustc => 1.49.0");
}
if is_at_least_1_51 || is_nightly {
println!("cargo:rustc-cfg=has_min_const_generics");
}
if is_nightly {
println!("cargo:rustc-cfg=nightly");
}
}