| use rustc_version::{version_meta, Channel}; | |
| fn main() { | |
| let version_meta = version_meta().unwrap(); | |
| // To use nightly features we declare this and then we can use | |
| // #[cfg(nightly)] | |
| // for nightly only features | |
| if version_meta.channel == Channel::Nightly { | |
| println!("cargo:rustc-cfg=nightly") | |
| } | |
| } |