sr-std 1.0.1

Lowest-abstraction level for the Substrate runtime: just exports useful primitives from std or core/alloc to be used with any code that depends on the runtime.
Documentation 
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//! Set a nightly feature

use rustc_version::{version, version_meta, Channel};

fn main() {
	// Assert we haven't traveled back in time
	assert!(version().unwrap().major >= 1);

	// Set cfg flags depending on release channel
	if let Channel::Nightly = version_meta().unwrap().channel {
		println!("cargo:rustc-cfg=feature=\"nightly\"");
	}
}