embedded-nal-async 0.7.1

use std::env;
use std::ffi::OsString;
use std::process::Command;

fn main() {
	println!("cargo:rerun-if-changed=build.rs");

	let rustc = env::var_os("RUSTC").unwrap_or_else(|| OsString::from("rustc"));

	let output = Command::new(rustc)
		.arg("--version")
		.output()
		.expect("failed to run `rustc --version`");

	if String::from_utf8_lossy(&output.stdout).contains("nightly") {
		println!("cargo:rustc-cfg=nightly");
	}
}