Move core crate into root

1 files changed, 26 insertions, 0 deletions

diff --git a/build.rs b/build.rs
index f36cd85..f528155 100644
--- a/build.rs
+++ b/build.rs
@@ -1,3 +1,6 @@
+use std::{env, process};
+
+use chrono::{TimeZone, Utc};
 use rustc_version::{version_meta, Channel};
 
 fn main() {
@@ -5,6 +8,29 @@ fn main() {
 	if let Ok(meta) = version_meta() {
 		if meta.channel == Channel::Nightly {
 			println!("cargo:rustc-cfg=allow_unknown_lints");
+			println!("cargo:rustc-cfg=include_nightly_lints");
 		}
 	}
+
+	// Make the current git hash available to the build
+	if let Some(rev) = git_revision_hash() {
+		println!("cargo:rustc-env=GIRT_BUILD_GIT_HASH={rev}");
+	}
+
+	// Use provided SOURCE_DATE_EPOCH to make builds reproducible
+	let build_date = match env::var("SOURCE_DATE_EPOCH") {
+		Ok(val) => Utc.timestamp_opt(val.parse::<i64>().unwrap(), 0).unwrap(),
+		Err(_) => Utc::now(),
+	};
+	println!("cargo:rustc-env=GIRT_BUILD_DATE={}", build_date.format("%Y-%m-%d"));
+}
+
+fn git_revision_hash() -> Option<String> {
+	let result = process::Command::new("git")
+		.args(["rev-parse", "--short=10", "HEAD"])
+		.output();
+	result.ok().and_then(|output| {
+		let v = String::from_utf8_lossy(&output.stdout).trim().to_string();
+		if v.is_empty() { None } else { Some(v) }
+	})
 }