diff -r 123f7f38e161 -r 1f19c6bbf07b build.rs --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/build.rs Sun Apr 27 20:29:43 2025 -0500 @@ -0,0 +1,10 @@ +use rustc_version::{version_meta, Channel}; + +fn main() { + // Tell rust that nightly flag exists + println!("cargo::rustc-check-cfg=cfg(nightly)"); + if version_meta().unwrap().channel == Channel::Nightly { + // … and set it for nightly. + println!("cargo:rustc-cfg=nightly"); + } +}